I post yesterday in another thread, that my sons 88 Fiero GT dies when shifted into "Drive" (I typed "Park" earlier in error). A couple of members sent me links to repair the TCC Lockup Solenid and Pressure switch.

Well today I talked to my mechanic and told him about the lockup solenoid and pressure switch and he told me that if the transmission wasn't going into lockup mode, in his experience with the older pontiac transmissions it's probably the Torque Converter.

Does this sound right? I've never heard of a torque converter going bad on a 47k transmission. Thank you.

[This message has been edited by GKK1 (edited 04-21-2009).]

dies when shifted into park? do the lockup solenoid and pressure switch.

TH125 TSB

quote Vehicle: All Technical Service Bulletins Intermittent Or No TCC Apply SIL 89-24 (June) Hydra-matic 3T40/THM 125C SUBJECT: Intermittent and/or No Torque Converter Clutch Apply Intermittent Torque Converter Clutch Apply and/or No torque Converter Clutch Apply due to Solenoid Assemblies (333) that may be inoperative. DATE OF PRODUCTION CHANGE: Suspect solenoids, will have the following production dates stamped on the solenoid body: 258, 268, 278, 288. (See Figure) Solenoid assemblies produced before and after these dates, are not affected. SERVICE PARTS INFORMATION: Refer to the following part number when replacement of the solenoid assembly is necessary. PART NUMBER DESCRIPTION 8652379 Assembly, Solenoid and Conduit

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Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)

The Ogre's Fiero Cave (It's also at the top of every forum page...)

[This message has been edited by theogre (edited 04-21-2009).]

Oops, I meant to say, "engine dies when shifted into Drive". Sorry for the mistake. I'll edit the original thread.

[This message has been edited by GKK1 (edited 04-21-2009).]

TCC solenoid

quote Originally posted by Mickey_Moose: TCC solenoid

What Moose said

Thanks, everyone.

My mechanic confirmed it was the TCC Lockup Solenoid. He thought the transmiision had to come out to change it but, I told him it could be changed by removing the rear wheel and transmission side cover.

Yup, I changed mine because it wasn't locking at all... and it failed again two years later. I was able to do it myself in the garage with a jack stand and the wheel off. I tilted it way up on the drivers side to limit the mess... it was still a mess.

[This message has been edited by carbon (edited 04-21-2009).]

quote Originally posted by GKK1: Thanks, everyone. My mechanic confirmed it was the TCC Lockup Solenoid. He thought the transmiision had to come out to change it but, I told him it could be changed by removing the rear wheel and transmission side cover.

Here you go, let your mechanic read this, installation of TCC solenoid with nifty helpful tips.

https://www.fiero.nl/forum/A...050119-2-055302.html

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jetman
Silver 86 SE 2M6 4-speed, with "check wallet light"
Now fortified with 8 essential slices of bacon goodness

Thanks, jetman!

I wish I read your links before I took my son's Fiero to the mechanic.