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The forum has been overwhelmed with an attack by spammers trying to register for an account, mostly from Russia. For that reason I have temporarily disabled new forum registrations. I'm hoping that the spammers will go away soon and new forum registrations can be restored. Sorry for any inconvenience this may cause.

After two failures of brand-new AC Delco HR6 Compressors, I did some research and found that there is a known manufacturing defect, or "decision" as it might be put. For whatever reason, GM removed the dowel pin from the body of the compressor. Some speculate that it was done to make it easier to assemble at the factory. There is just one problem with this. When the unit is installed on the car, tightening the bolts without using shims to make the mounting surface fit perfectly flush with the compressor results in the compressor housing twisting and coming apart at the seams in the middle of the housing, and complete loss of refrigerant in short order. There are improved aftermarket versions of the compressor available that have dowel pins wisely reinstalled where they belong to keep the compressor body intact. Note that these compressors use PAG 46 rather than the PAG 150 of the original design. I hope this helps someone else who may be experiencing this problem, or prevents it from happening entirely.

When you want to use a generic automotive floor jack, but don't want to mangle your Reatta's sheet metal...

Good idea. I recently purchased a rubber pad for my floor jack that has notches molded into it that might serve the same purpose. I can't jack up my Mustang using the pinch welds because the pinch weld area has fiberglass ground effect parts attached to it. The main reason I bought the rubber pad is because the K member (cradle) where you jack up the front of a Mustang is slightly angled making it easy for a floor jack to slide off if you don't use a rubber pad to provide some grip. Using the jack metal to metal is dangerous and using just a block of wood isn't recommended on the front of a Mustang like mine. The rubber gives the jack a better grip on the K member, and the the pad has a lip on the bottom to keep it from slipping off the jack. For only $8 on Amazon the rubber pad is a good addition to any floor jack.

Yes one of my horn buttons finally popped off/broke and I was facing removing my steering wheel and figuring out a better mouse trap. Don't know if I did, but check it out--I glued a pair standard foam earplugs, cutting a slot to fit along the plastic tabs, and glued the button back into place. Seems to be the exact depth, rebounds after making contact, and so far has stayed in place, even in the Los Angeles sun. I used Permatex clear RTV silicone adhesive. Too simple to be true?

Update: problem solved. It turns out that the blend door was sticking and with a bit of wiggling the arm back and forth, I was able to get it to the Max Cool position where it will stay for the summer. That How To Guide here was so helpful. Thanks again ROJ

Ship, I am a Blessed man, I still get up under the dash,, a bit of an issue getting back out and my eyes don't always see what I am looking for, and I turned 85 in Feb.

It really wasn't until I put my known good ignition module on that I thought it was something to do with the wiring. Before I was swapping first coils and then the ignition module and old coils and finally a known good module/coil set up that I knew something else was wrong. First test was just disconnect the harness and reattach it and it would fire. Next time wiggle the wires at the ignition module without removing the connector and it would fire. I then took a close look at the harness and saw it was only a 3' harness with 5 connectors. Went to the Buick dealer and one left in the country at $200.00. Went to Rock Auto and a Dorman was $85.00. Amazon was $110.00 for the same Dorman. The Dorman was a nice replacement, looked to be of good quality. Only connector that gave me trouble was the crank sensor. It started going on so hard that I had Kendall make the connection as I didn't want to damage the pins on the crank sensor causing more work. Only things I had to remove to get at everything was the engine shroud, serpentine belt, and water pump pully. Front to back time about 45 minutes. Gotta love the 3.8!

Like most things, it sometimes makes no sense. People are repairing, or at least trying to repair, Reatta's that should be parted out and others are just the opposite. Seemingly decent cars that deserve some TLC are being scavenged and discarded. Definitely well under $1k for a running parts car, much less than that for a lawn ornament, unless of course it has exactly the stuff you need. Mixing and matching colors, inside and out, or model years with incompatible content really limits the usefulness.

Returning from my trip to Arkansas for the recent eclipse. Lucked out with perfect weather and clear skies. Attached are three photos, one is my poor cell phone photo held up to the eyepiece of my small telescope and the others are from a kind lady from Texas who shared pics from her nice camera and lens combo. Bet you can guess which might be which😜

Just today hit 333,200 miles on the Red of which almost exactly 220,000 were put on by me. Bought the Red in December of 2006 for my 50th birthday. Flew to Fort Lauderdale to get it. Bought it from a private party and drove it home. Took the rest of the fly in day and the next to get home. Had my first experience of sleeping in a Reatta with 16 way seats!

The servo was used on multiple GM cars in multiple years. take a walk through a you pick yard and look for a lower mileage Buick. Once you get it off suck on the big hose nipple. If it holds while you have vacuum on it, it probably is good.

Greetings to the Reatta community. I recently purchased a 1991 Reatta that was featured on Barn Finds, and listed on Ebay. It was a one family car since new, in pretty nice shape, 63K. Red with saddle interior. Not my favorite interior color, but the red/tan combo looks good enough for me. It was shipped from Cincinnati down to it's new home here in Florida. Arrived on Tuesday, and has gotten a wash, clay bar, wax, and started fiddling with buffing out the oxidized tail light and front running lights. Interior is in good shape, but will be totally gone through as well. The only issue that does need attention sooner than later is the not cold AC. I was amazed to see the car has a "service AC" light on the dash. I will change out all the light bulbs to LED, upgrade all the speakers, and maybe the head unit to something modern with either XM or Bluetooth. Looking forward to learning about this great car thanks to this site. Peace, John

I was able to purchase them at my local Lowes store. There is an assortment of them in drawers in the hardware section.

No, they are solid aluminum and can be buffed. The top layer is anodized and really should be stripped and then buffed. When you are finished you have bare aluminum. I took mine off and stripped them, then I took them to a fellow I know and he polished them, only the part that shows. To keep them shiny I polish them with a product the polisher recommends. It's called " White Diamond."

My reatta isn’t nice like most of the ones in here but very soon it will be my dad painted it put rims on it and changed the seats for me to like it 10yrs ago everything else on this car is original from 1989 when it was manufactured as a teenager I didn’t think much of it I’m a little older now I’ve fell in love with it the 1st time I spent money on in April of this year its just the rarity and Chase of finding parts. Boy when I tell people the parts are for a 1990 Buick reatta with 73k original miles the responses and reactions make me fell as if brand new Porsche… Can’t wait to hear the responses my kids get with it

Look at that! Both a Mustang and a Reatta can coexist in the same garage!

I had to install an axle in my Reatta a few years ago and this is what I remember. The axle and transmission splines have to line up properly to get the axle started inside the transmission. I don't remember anything else that needs to be lined up. After the axle slides in so far it will seem to stop. Then you will need to put a large screwdriver, or something similar, in the grove shown in the photo below and carefully hit the screwdriver with just enough force to get the axle to pop over the snap ring to lock the axle in place. As the FSM instructions said, don't push or pull on anything except the part of the axle that has the grove in it or the CV joints could come apart.

I'd been having intermittent issues with rough idle, and rough running. I've cleaned the MAF sensor, I've cleaned the IAC, I've replaced the crank position sensor. No change. I was on the verge of replacing the ECM. But while I was under the car replacing the crank sensor, I noticed a foul viscous sticky goo on the frame, that seemed to have come from above. The slime was beige, with a greenish tint to it, really nasty looking, very sticky, and impervious to WD-40 and Goo-Gone. When I traced it uphill, it was leaking from the seam between the coil pack (Motorola) and the ignition module. I removed the coil pack, and sure enough, there was a crack on the bottom side with this gross slime oozing out. I had to clean a lot of slime off the wiring that connects the coil pack to the Ignition module. But replacing the obviously failing coil pack didn't change anything, which really surprised me. Inspired by Daves89 post about the ignition harness on his '99 Regal having been the problem, I thought I'd take a look at my Reatta's ignition harness. First step was unplugging the ignition harness from its socket on the ignition module, and that's when I discovered that the wiring harness connector and socket on the ignition module were both fouled with the slime that had leaked out of the old cracked coil. I tried electronic parts cleaner, but the slime was unimpressed. Lots of scraping and digging with tweezers and tiny screwdrivers got much of the goo off of the connector, but there was still plenty of sticky residue on everything. I was concerned that something as aggressive as carb cleaner might soften the wiring harness connector, but as it was useless anyway, unless I could get the slime off, I gave it a try. Carb cleaner did the trick. I wrapped a rag around the connector to keep the cleaner from removing paint or anything else important in the vicinity, and cleaned the socket on the ignition module the same way. Finally, I sprayed off all the goo that had embedded itself into the wiring bundle, hoping that carb cleaner doesn't soften wiring insulation either. After putting it all back together, she started right up and idled smoothly. A short test drive was similarly uneventful. As the problem has been somewhat intermittent, I'm hesitant to say I'm home clear, but it does look like the slime was actually the culprit.

Update: SOLVED! I was about to give up and return the Delco coil pack and ICM, but for fun I put the old Magnavox pack on and it wouldn’t work either! I did I did a little googling and came across this old post: https://forums.aaca.org/topic/332605-1990-reatta-occasionally-wont-start/ His problem was that the coil pack wasn’t grounded. I already thought of this, or so I thought. I double-checked and tightened the bolt where the ground wire goes from the engine to the frame. I had loosened it to get to the screws for the coil pack and I thought I had tightened it enough, but I hadn’t. Once I tightened the bolts for both the ground wire and the coil packs, both coil packs worked! It just wasn’t grounded “enough.” Of course I removed the Magnavox one and installed the Delco as has been recommended to me by many people. So the good news is that yes, a coil pack from a 3300 engine (in this case a Buick Century 1993) is the same part and will work. hopefully that opens up some junkyard options for people. Thanks for the helpful comments.

another project completed that made a huge difference in how the car was running and idling, i went thru the dx screen and codes , had a code for the cruise servo, ordered a new one on Rock Auto,. installation took all of about 20 minutes, maybe 30 once vac lines was replaced since the connection was cracked on the old one and broke off inside the hose, but once that all was done , took it out for a test drive and i guess that was one cause for vac leak and why the idle was slow and varied up and down. now it is steady and constant idle, and the cruise now works perfectly. Drove to work today and enjoyed being able to set the cruise on the highway for my 20 mile commute.

Try www.car-part.com

I generally follow whatever recommendations I see from GM, but this time it failed spectacularly. A service bulletin from the '90s said to upgrade the oil pan gasket to their new design from AC Delco which is supposed to be so good that you can even reuse it. The first thing I noticed was that it didn't fit very well. It was floppy, hung over the edge in places, and getting it to stay in place while installing it was like trying to make a fish sandwich while it's still alive. The instructions that come with it and in the bulletin say to torque the bolts to 10, then 16. This seemed to squeeze the gasket out, and deformed my new pan. It started leaking and progressively got worse, so I ordered a new gasket. This time I ordered the Fel-Pro PermaDry Plus. This gasket is a solid piece that doesn't flop around or squeeze out. It comes with 4 handy helpers called SnapUps that you screw into 4 bolt holes, and they hold the gasket and the pan in place in exactly the right spot, freeing up your hands to put the bolts in easily. Once you get a few bolts in, the SnapUps just unscrew and you can put the last 4 bolts in. Incidentally, I tried doing a search for "oil pan" on this site, so as to avoid make a duplicate thread, but the search doesn't seem to be working. It returned zero results, even though there is another thread on that very page about oil pan bolts.

or try www.car-part.com Very simple easy to use website. there's 4 of them within 200 miles of you for less then $200.00 with the lowest $70.00. You can drive over and pick it up along with the extra parts you also need.

We need some background on the charging problem. Was the battery not being charged the reason you installed the new alternator? Or did the problem start after you replaced the alternator? Any additional info you can give us would be helpful. Don't assume the alternator is good just because it is new.

Edit: nevermind, culprit seems to be two fuses were blown/corroded

I put new wheels on the driver side and left the old stock wheels on the passenger side, then pulled it outside and took a few photos for comparison. This sealed the deal for me. I will be swapping my tires onto the new wheels soon. I think I will be very happy with the wheels Gary gave me. Before I got my Mustang Gary said he would help me with parts if I bought one but I wasn't expecting this. I offered to pay but he refused take anything. He's a good guy.

I found the issue. To answer your question, it would idle fine with my foot on the brake and other foot lightly on the accelerator. I looked under the hood and way down by the ac drier, the link hose to the vacuum accumulator tank was rotted and broken. Changed it and now it runs fine. I will be going through all these hoses this weekend. The plastic one for the climate control appears to have been changed and is in good shape.

Just installed a compass mirror from an Olds. It has the map lights, auto dimming and compass. It was a direct plug and play. No harness adaption needed.

The Regal has been running great. Hate to say it, but I like the extra room the Regal has so I use it more and more. One of my cars has to stay outside [the Regal] so I only drive the Red when I know the weather is going to stay nice.

The hood might just be stuck. Hold the hood release lever out and get someone to push up and down on the front of the hood and see if it pops up. I had this very same thing happen on an old Mercedes I bought and it took me quite a while to figure out why the hood wouldn't open.

Doing it on a Ranger makes no sense but doing it on a Mustang that is supposedly a "high performance car" is just plain crazy. It's got a fiberglass hood and trunk lid, aluminum overhead cam heads, limited slip differential, dual exhaust from front to back and huge roll bars for handling. Then they install a fake oil pressure gauge? Whoever came up with that idea should have been fired.

I don't see a lot of wobble, although there is a little movement. It is called a flexplate, essentially sheet metal, and is designed to have some flexibility. The crankshaft can have up to five or six thousandths of endplay and the torque converter floats in and out. I think some of the visual is actually the counterweight appearing and disappearing.

Today is the one year anniversary of me selling my Reatta. I owned it for about 17 years. I still miss my Reatta but circumstances dictated it was time for me to sell it. Because of parts availability, my age, and my health, I think I made the right decision. I have a Mustang now, but to be honest I still miss a lot of things about the Reatta. When I sold my Reatta I was asked if I would keep ROJ going. As you can see I have done that. The annual fees required to keep ROJ are now due. I intend to pay the fees again this year even though a few donations to ROJ don't cover them. I think ROJ How-to Guides are a good resource for Reatta owners and I hate to see them go after spending countless hours over the years to put them on ROJ.

I saw a post by Marck on his Facebook page indicating he was working with another shock/strut manufacturer (not Monroe this time) to produce another batch of rear struts. I too have started to stockpile components and have two sets of rear struts, a set of front struts, caliper rebuild kits, ignition parts, etc. Though, putting on less that 1000 miles a year I may never need them, but there is a lot of emotional history with my car as it belonged to my father and I plan on giving it to one of his grandchildren some day.

Start by pulling the glove box out and look around inside the dash from there. Just remove a few screws and it comes right out. Then pull the kick panel off the driver's side and look up inside the dash from there. I would avoid removing the brittle plastic parts if possible. Have you turned on the A/C and heat to see if the smell is stronger from the air coming out the vents? If it is you can remove the blower motor and blower control module on the firewall and see what you find in there.

so it was a low voltage issue, once i got the battery fully charged back up from it sitting for a week not driving it, the flicker is gone. Phil

Those wheels look great on that car Ronnie! Glad you got them. And you can keep talking about it if you want.

Something to think about... 🙂 The Quotes of Steven Wright: 1 - I'd kill for a Nobel Peace Prize. 2 - Borrow money from pessimists -- they don't expect it back. 3 - Half the people you know are below average. 4 - 99% of lawyers give the rest a bad name. 5 - 82.7% of all statistics are made up on the spot. 6 - A conscience is what hurts when all your other parts feel so good. 7 - A clear conscience is usually the sign of a bad memory. 8 - If you want the rainbow, you got to put up with the rain. 9 - All those who believe in psycho kinesis, raise my hand. 10 - The early bird may get the worm, but the second mouse gets the cheese. 11 - I almost had a psychic girlfriend, ..... But she left me before we met. 12 - OK, so what's the speed of dark? 13 - How do you tell when you're out of invisible ink? 14 - If everything seems to be going well, you have obviously overlooked something. 15 - Depression is merely anger without enthusiasm. 16 - When everything is coming your way, you're in the wrong lane. 17 - Ambition is a poor excuse for not having enough sense to be lazy. 18 - Hard work pays off in the future; laziness pays off now. 19 - I intend to live forever ... So far, so good. 20 - If Barbie is so popular, why do you have to buy her friends? 21 - Eagles may soar, but weasels don't get sucked into jet engines. 22 - What happens if you get scared half to death twice? 23 - My mechanic told me, "I couldn't repair your brakes, so I made your horn louder." 24 - Why do psychics have to ask you for your name 25 - If at first you don't succeed, destroy all evidence that you tried. 26 - A conclusion is the place where you got tired of thinking. 27 - Experience is something you don't get until just after you need it. 28 - The hardness of the butter is proportional to the softness of the bread. 29 - To steal ideas from one person is plagiarism; to steal from many is research. 30 - The problem with the gene pool is that there is no lifeguard. 31 - The sooner you fall behind, the more time you'll have to catch up. 32 - The colder the x-ray table, the more of your body is required to be on it. 33 - Everyone has a photographic memory; some just don't have film. 34 - If at first you don't succeed, skydiving is not for you. 35 - If your car could travel at the speed of light, would your headlights work?

I think you should get the correct alternator.

On the 1989's, I think when you adjust the temp down below 65 degrees, the display states "Max Cool" or "Max AC"

Issue has continued with the occasional cut out while driving and the very seldom no start until I cleared the codes. As a side bar the Series 2 scanner will tell one that there is a crank sensor communication issue which is a bit more then the information we get with the Reatta. At any rate I swapped out the Crank Sensor and while I was there also did the Cam Sensor. So far after about 100 miles of driving and numerous starts no issues. Will continue to drive it more then normal as I want to be sure it is fixed. I plan on heavy use this fall with work.

I don't see how changing the timing chain could cause that code. Since it is sporadic the culprit might be a problem with the EGR valve. The EGR has three ports and one of them could be sticking in the open position randomly causing a lean mixture. I would check the EGR first before doing all the other work you described. BTW, you can open and close the 3 EGR solenoids using the onboard diagnostics while the engine is running to see how they respond. If you cycle them repeatedly maybe you can catch one of them sticking open when it should be closed.

I ended up having the compressor, dryer and the little valve in the line replaced. As I was sitting on about 10 cans of R-12 I stayed with the r-12. Also had the antifreeze flushed and filled as the radiator is in the way of getting the compressor out. Ready for spring!

Makes sense, appreciate the feedback. I figured since there's a lot of things that could be related together it would help to keep it together. I'll try to break it down into at least related pieces. Thanks Ronnie!

Welcome. It looks like you have quite a job in front of you. Regarding photos; it sometimes helps to have a general overall photo with locations noted as well as the detail photos. I am just speaking for myself, but I do not have color codes and wiring configurations committed to memory🥴. That said, a couple of things are obvious and that is the area of the brake system in the engine bay has been converted to some sort of standard type brakes. The original anti-lock system is missing and the photo of the cluster of harness plugs is what used to plug into the motor and anti-lock module. You will probably have multiple warning lights related to brakes. I see the corner of what appears to be a cone type air inlet filter, and the sensor out in the open is probably the inlet air temperature, which is installed in the stock air filter housing. I do not know what is being referred to as an aftermarket MAF, but the photo appears to be the stock style setup with the protective loom covering missing from the last portion of the harness to the plug.

That bar installs under the area covered by the oil filter adapter. It bridges over one bolt hole that is difficult to access and consequently you will be one bolt short of the total number of tapped holes in the pan rail. That bar should have a slight kink in it to apply pressure to the missing bolt. You can install a bolt in the open hole and delete the bar if desired. I think they are 1/4” SAE thread