Question about 1985 Pontiac Firebird

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85 pontiac firebird 5L engine automatic trans trans willnot shift until it is totally warmed then shifts normal

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  • Clint Smock
    Clint Smock Jul 10, 2010

    It just holds 1st gear? New fluid and filter?

  • folyerhrt Jul 10, 2010

    yes holds first,yes filter,fluid,will not shift until it has warmed about 1-2 miles then shifts normal



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Sounds like you might have a stuck governor valve. It is located on the drivers side near the rear, under a round steel cover about 3 inches in diameter.

Posted on Jul 11, 2010


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1997 toyota coroola dx automatic 214Kmiles. Gears not shifting correctly until car warms up.

Is this an automatic or manual transmission? When was the last time you changed the filter if it's an automatic? You may have a valve body problem too.

Oct 02, 2016 | 1997 Toyota Corolla

1 Answer

Won't shift into reverse. Won't even go over far enough to shift up into reverse.

I had a 1995 firebird 6spd. I ran Royal Purple oil in the trans, Nitrous..etc.. I beat on it a little but not much. The car sat outside since I owned it (15+yrs)..
One year I went out and I had the same problem.. If I pushed REALLY hard to the right it would go over - and then smooth as butter it would go UP into reverse.. Driving the car & warming up the trans did little..

>> I suspect it was the REVERSE LOCKOUT solenoid.. (I sold the car the next year)

Like the skip-shift solenoid works - I figured it was the Reverse Solenoid that had frozen up..

Never confirmed... But I know I never thrashed on it so bad as to bend something inside the trans..

Clutch worked great - so no issues with it binding while trying to engage gears.
You might remove the solenoid and see if it plunges in and out without power / using your hand to compress it in.. Also check the shifting while it is out...

May 11, 2015 | 1996 Pontiac Firebird

1 Answer

Pontiac firebird problems

Rebuild the trans

What have you been waiting on !
Why use a vehicle that won't shift properly?

Feb 22, 2014 | Cars & Trucks

1 Answer

1989 ponitiac firebird transmission shifting hard

the cable adjustment from the engine to the trans its the one with a square section that goes on the engine side push the metal section in and pull back on the cable then push the gas pedal to the floor that should set it

May 17, 2012 | 1989 Pontiac Firebird

1 Answer

Transmission wont shift to second gear

The vacume hose on the vacume modulater on the trans mission is nt hooked to full engine vacume or the engine isn't making vacume.The governer will make the trans shift to second anyway at redline but it's preety hard on an old car to redline it just to find out/ It's possible that youv'e got the shift detent cable that hooks to the carb set too tight or it's stuck as if it's floored. with the cable disconnected it should shift out al the way real early as long as thirs vacume on the modulater. Gas mileage freaks that drive around slowly unhook th shift cale so the trans shifts into high gear real early. Not much for passing and acceleration but they get a little bit better gas mileage.

Sep 22, 2010 | 1979 Pontiac Firebird

1 Answer

1999 pontiac trans am 5.7 A T , won't shift past 2nd gear

Most likely is a shift silenoid. You can go to autozone and have them read the codes for you. Then you will know for sure.

Nov 06, 2009 | 1999 Pontiac Firebird

1 Answer

Trans shifts very hard after 5 minutes of stop and go traffic

A reason for hard shifting could be a problem with many things with various degrees of seriousness. It could be your ATF( automatic transmission fluid) is low or broken down and old. This would cause the hardness and the reason for stop and go traffic effecting it. Another possibility is your transmission is just shot, and the timing gears inside are worn and not properly shifting at the correct RPM causing a **** during shifting.

Some possibilties, not all!


Mar 27, 2009 | 2003 Buick LeSabre

1 Answer

Automatic transmission will only shift manually

its the filter. changing the filter will fix this malfunction.

Mar 09, 2009 | 1993 Pontiac Firebird

1 Answer

What is the correct oil pressure for a 1989 pontiac trans am with the 5.7

Generally, the pump should put out about 10psi for each 1,000 rpm that the engine will be run at. If the shift will be at 6,000 rpm, then the engine should have 60 psi when warm at 6,000 rpm

Feb 01, 2009 | 1989 Pontiac Firebird

1 Answer

Trans is punching

the car has a computer that learns it's shift pattern.disconnect the battery for a while and it should enable it to relearn shift patterns.

Jan 16, 2009 | 1995 Pontiac Firebird

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