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On most you need a puller to get the pulley off.

I have this problem with my 90. The only thing I can find to cause it is worn throttle body shaft bore. Seems as though the plates bind a little . You can check this with the engine not running , on mine the shaft has some forward and back play. I had the pedal out and checked but all seemed...

Are you reinstalling the old bulbs. In other vehicles I have had the bulb short out internally and cause strange seemingly unrelated issues.

If my memory doesn't fail me the emrg. flasher switch is part of the signal light switch . Usually a small threaded stud protrudes from the column or just inside of the mounting hole.

Could be EGR stuck open due to a piece of carbon. Dirty fuel filter is possible but usually don't come on that quickly. Fuel pressure regulator is a bypass system,, could be stuck open but again unusual. Throttle position sensor is also a possibility.

Gates makes something they call a Unicoil It is a spring like piece with a metal strip attached that you slide over the hose. bend to the radius you want and the coil keeps the hose bent and keeps it from kinking . Part number for the 3/4 is 28512 Makes routing hoses in tight places a lot...

Have you checked all grounds ? Check connections on all the sensors, I recently found my temp sensor connection badly rusted. Seems that some sensors have to be totally nonfunctional before they throw a code.

Don't be to quick to convert to 134A the price on it is right up there and the price of R12 has really dropped. Even though the 134A works ok, you will never get the cooling of the R12. Check the price of R12 before you convert.

I ordered this cable a couple weeks ago ... it works great. OBD Diagnostics, Inc. - ALDL (GM OBD1) Cable with 12 pin Connector I downloaded DataMaster TTS Power Systems you get 20 free logs , think you can scan without logging and it don't count against it. the only thing that gave me...

Filter, regulator , pump in that order . Unless you have a line leak .

On my 90 it is called the start enable relay. It's on the drivers side. :thumb to that shop.

Grill paint ?? as in charcoal or gas . Glenn

Boomdriver, On my 90 the ABS also does the test in reverse.Maybe all yrs are not the same in this respect. Glenn

Correct. The 90 was a one yr wheel. Perosnally I think it is the best looking wheel that ever came on a C4. 89 was much like it but had a hubcap. In 88 they used a few like the 89 but painted for the anniversery model I think. Glenn

If the pilot bearing was a needle bearing style and it started to come apart it could bind on the shaft and spin the trans with the clutch disengaged. I will share an experience with my 90 clutch. For those that don't know it has the ZF 6 speed. The flywheel failed and I replaced everything to...

seems to me there was a link somewhere on how to build a cable . I had it bookmarked but rebuilt computer since then.

make sure the the port where the PVC hooks into isn't restriced. Also make sure your exhaust isn't restriced . Is the engine running a little warm? Scav.

That isn't just a side note, that is major good news. Thanks for serving ,enjoy your ride. :thumb Glenn

I don't put mine away till the first snow or ice hits and they put sand and salt on the roads. Winter is long enough without rushing it. Glenn

If you have dual 3 in up front the single 3 in in the middle will be the bottle neck. Dual 3 in is a lot of volume. Glenn