Question about 1986 Pontiac Firebird

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How to fix fuel boiling on a Trans Am 86 305 TPI v8?

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It usually doesn't happen unless the car has a carb. but, if you are sure it is a boiling problem, there are wraps you can use to help with the boiling problem, a cooling block you can add to your fuel system, or relocate your fuel lines away from the block and exhaust manifolds using hose instead of metal lines. Due to higher amounts of ethanol in gasoline today, the fuel boils at a lower temperature.

Posted on May 10, 2014

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I'm just asking, but how do you know its boiling? What are the running problems you are getting?

Posted on Oct 13, 2010

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1989 trans am gta, 5.7 ltr tpi, replaced my battery with brand new gell cell, as soon as I connect positive cable ican hear fuel rails prime and continue, started car and after shutting off ignition


If the Oil Sending Unit becomes defective, it often keeps the fuel pump running even after the car's engine is shut off. Replacing the Oil Sending Unit should correct the problem. Believe it or not Pontiac uses the oil sending unit as a back up to power the fuel pump.

Nov 03, 2014 | Cars & Trucks

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Why is my trans am surging at idle and low acceleration?


i'd check the air intake and vacuum pipes , ducts for any sign of leaks etc as a starting point

Jul 24, 2014 | 1986 Pontiac Firebird

1 Answer

85 tpi corvette wiring diagram


Are you trying to use your harness and ecu from the existing v6? Please say no cuz the ecu for a v6 will not work well for the v8. I would suggest getting the ecu harness from the vette you got the motor from. GL.

Dec 06, 2013 | Cars & Trucks

1 Answer

What ingine size is it


The 1992 Dodge Dakota came in 3 engine sizes: 2.5 Liter (151 cid) L4 w/TPI 3.9 Liter (239 cid) V6 w/MPI 5.2 Liter (318 cid) V8 w/MPI

Jun 21, 2011 | 1992 Dodge Dakota

1 Answer

Got an '87 firebird that has been pieced together, looks like 5.7L T.P.I. engine. How can I identify what motor it is for sure? thanks


Look at the fuel injector cover if its fuel injected on top most say it there, it will say 2.8L or 5.7L if it is a v6 (6 spark plug wires) chances are its a 2.8 if it has V8 (8 spark plug wires) more likely to be a 5.7. Check your ECM if its what came with that motor if it is the original GM part the number on it should be 1227165 if it is it should be 5.0 or 5.7 more likely the 5.7.

Dec 13, 2010 | 1987 Pontiac Firebird

1 Answer

88 Trans-Am GTA 350 5.7 TPI fuel injected...Car will start and run 10 mins and then just die. Wont start for 2 hours and then when it does start it only runs 10 mins then dies again. Dont know what to do...


Your fuel filter may need to be replaced and the other area that needs to ab addressed would be a ICM (ignition control module) going bad. Common for ether issues to cause you the same problems.
You can have your ICM tested at Auto Zone free of charge and you can also pick up the fuel filter from there.
Thank you for using fixya and good luck

Jun 19, 2010 | 1988 Pontiac Firebird

1 Answer

1987 GTA trans am TPI. it runs rough and rich. i let it run by itself and now it won't start unless i flutter the fuel pedel and then it still runs really rough and won't rev up. what can i look for?


I would suspect either the tps or mas air flow sensor, you can unplug the mass air flow sensor ( located in air tube to throttle body) see if this helps. The mass airflow sensor may need to be replaced. please rate if this helps

Feb 13, 2010 | Pontiac Trans Cars & Trucks

1 Answer

I have an 87 trans am with a 305 TPI with an unknown problem


Check the knock sensor on the right side of the block,below the head,and above the oil pan.Check to see if it is plugged up good.Then check the wire all the way up to the wire harness,to see if it is grounding out on the engine somewhere.I hope this was helpful261213.jpg

Oct 11, 2009 | 1987 Pontiac Firebird

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