Question about 1985 Pontiac Fiero

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Fiero runs and will idle but now has no power

1985 Fiero starts and will idle ,it will rev up but then looses power within a min or so. It has a new rotor, idle control valve, wires and plugs and new air filter. There is no engine light on.

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  • 2 Answers

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: tail lights fora 1986 Fiero

rear of the car is totally different, if you want to do the gt conversion you will need to exchange the whole rear clip.
gt light are wider,cant use just the lens or cover.check for parts at vegas fiero club

Posted on Feb 19, 2009

csmock132
  • 4669 Answers

SOURCE: need to locate the ignition control module in my 1985 fiero gt

Take off the distributor cap, it is held on by two screws and has three plugs, 1 to the pick up coil, one to the computer, and one to the ignition coil.

Posted on Mar 19, 2009

  • 202 Answers

SOURCE: fiero idles but stumbles on acceleration

to me this sounds like your ignition timeing is off because of the hard start and the no power when accelerating. I would definently check the timing out on it
hope this helps you out

Posted on Apr 30, 2009

cadman000
  • 607 Answers

SOURCE: fiero idles but stumbles on acceleration

Replace that cap and rotor, most likely your problem will disappear. Hope this helps

Posted on May 01, 2009

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3 Answers

I have a 1985 fiero se v6 that was running fine but cutting off after warm up


Do you know what you are loosing when the engine stops running ?

Jan 16, 2014 | 1985 Pontiac Fiero

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Won`t stay idled


Can you describe the problem ? Have you checked the idle air control valve ? Is the throttle body clean ?

Jul 03, 2013 | 1985 Pontiac Fiero

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Where is the IAT sensor located on a 1985 Pontiac fiero


If you mean Idle Air Control, it's on the throttle body below the throttle position sensor. I think it's a deep, 28mm socket that fits over it, or you can use a big adjustable pliers or wrench. Read the instructions on the new one. Don't loose the pintle! Don't turn the ignition on with the IAC hooked up but not in place. The pintle will go flying out.

May 07, 2012 | 1985 Pontiac Fiero

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My 1985 Fiero is hard to start and when it starts it idols but when I put it in gear it goes dead ?? I put in a new Idol control valve and a new Throttle position sensor, I did notice when I put the TPS on...


try the fuel presure regulater it should be on the fuel rail ( that is if it is the V-6 ) it hasone vacum line on it and it has i think like 6 screws holding it in. it will cause just that same problem it will also cause it to flood at idle and foul plugs and make it idle rough you may have to chage the plugs also. you might check the vacum to. it should run on stright vacum from the intake.

Aug 20, 2011 | 1985 Pontiac Fiero

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I bought a 1985 fiero se 10 years ago...they had put a new clutch in it....i drove it home and noticed that there was something not quite right in the shifting...i readjusted the clutch/shift linkage and...


You are not getting fuel. EIther bad fuel pump or plugged fuel filter. No fuel pressure and it starts for a second with starting fluid, then there is no fuel being pumped to fuel lines.

Feb 03, 2011 | 1985 Pontiac Fiero

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87 Fiero 4 cylinder. Starts and idles fine but no ability to accelerate, no power. Have drained old fuel and replaced with fresh. New fuel filter, new air filter, new plugs am going to change out the...


Possibilities:Timing is retarded,TPS (throttle position sensor) is malfunctioning.Make sure there isnt a vacuum leak(check vacuum lines and intake for whistling or air sucking)

Nov 18, 2009 | 1985 Pontiac Fiero

2 Answers

1985 fiero been having problems getting in gear. Now wont turn over starter. New starter didnt fix problem. Dont know if 2 problems are related. Can push start.


Have same car, same problems, easy solutions.

Getting into gear has been improved by putting in neutral with engine running to warm up fluid. The Fiero has very little room in the pedal area. I'm shifting a lot better with smaller shoes.

The problem with starting may well be related to the same issue. There is a neutral safety starting switch. If you're not pressing hard enough on the clutch - starter won't run. According to the Fierostore.com stock clutch pedals tend to bend. They sell a stronger replacement.

My Fiero has been starting just fine the last few days. The last time it didn't I was wearing boots.

I've almost always been able to get it to start using a booster battery, but Walmart's tester indicates that the battery and charging system are fine. It recommends tightening connections. I did this, but still had problems for a while.

Jul 05, 2009 | 1985 Pontiac Fiero

4 Answers

Fiero idles but stumbles on acceleration


to me this sounds like your ignition timeing is off because of the hard start and the no power when accelerating. I would definently check the timing out on it
hope this helps you out

Apr 30, 2009 | 1985 Pontiac Fiero

1 Answer

Need to locate the ignition control module in my 1985 fiero gt


Take off the distributor cap, it is held on by two screws and has three plugs, 1 to the pick up coil, one to the computer, and one to the ignition coil.

Mar 19, 2009 | 1985 Pontiac Fiero

1 Answer

Tail lights fora 1986 Fiero


rear of the car is totally different, if you want to do the gt conversion you will need to exchange the whole rear clip.
gt light are wider,cant use just the lens or cover.check for parts at vegas fiero club

Jan 27, 2009 | 1986 Pontiac Fiero

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