1981 Buick Skylark 2.8L V6 carbureted from North America
Summary:
Learning experience before the Internet
Faults:
Automatic transaxle slipped due to internal hydraulic issues with "direct clutch". Tried rebuilding it unsuccessfully. 1st gen THM125 were junk. In '82 GM introduced 2nd gen THM125c, c is for Torque Converter Clutch. I've swapped 2 of those before finding a good one, got the process down pat to 4 hours. I wired the TCC to a manual switch to use on a highway. '83 onwards THM125c were OK in my experience.
Carb enrichment rod kept getting stuck - lubed with synthetic oil.
Ignition issues started in the dead of winter. After replacing a bunch of obscure distributor parts found out it's the electronic advance control mounted on the firewall (no vacuum advance here). On carbureted X-bodies only the electronic distributor module was used for starting, then after 3-5 sec. it switched timing to external ECC and then ignition glitched. Disconnecting ECC made the engine run at base timing. Replaced ECC later. I don't remember exactly which wire needs to be pulled, but there are 2 timing control blades on the distributor module so that should give you a clue.
The reason X-bodies are labeled as lemons is because the "brake proportioning valve" makes rear brakes lock up hard. My neighbor's X-body Citation had that issue, mine less severe. I replaced mine with one from A-body car.
General Comments:
A-body car that came out in '82 was basically a de-bugged finished design whereas the X-body was a demo version, not fully engineered, yet rushed to market because Chrysler got Lee Iacocca and the K-car marketing blitz.
So really just be sane and avoid X-body cars and buy A-body instead. I recommend Cutlass Ciera and Buick Century option packages. Avoid Celebrity option - interior too cheaply made, had one of those too.
Bought this midnight-blue V6 sedan for cheap at an auction. Right away found out the transaxle slipped in 1-2 ranges but held up in 3rd and reverse.
Ride was very comfortable and reasonably quiet for a unibody car.
After I sorted out all THM125c transaxles in the city, acceleration was decent, comparable to modern fuel-injected 4cyl cars. Averaged 21-23mpg.
I liked the medium-sized trunk that fit a bicycle. Split-bench front seats had non-reclining seatbacks retained by a nylon strap because only the coupes had mechanical locks. I've tried camping in this car by disconnecting the nylon strap & reclining pass. seatback forward - uncomfortable. Back seat too narrow.
The body was well-made overall, not a rattlebucket. I've taken it on many road trips.
Oh yeah, the ignition switch in the steering column smoked once in a while in the off position, but no fuses and no functions failed. Another reason to avoid an X-body.
Would you buy another car from this manufacturer? Yes
Review Date: 12th September, 2022