Question about 1988 Pontiac Fiero

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My 86 fiero GT has no electrical power, - 1988 Pontiac Fiero

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  • 16 Answers

Check fusable link from the starter.

Posted on Oct 02, 2010

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Posted on Jan 02, 2017

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1 Answer

How to fush heater core in my 86' Pontiac Fiero GT?


If you need to flush the core you would be better to change it. It would get flushed when you flush the entire system. Also try changing you thermostat that is the usual first cause of running hot or a bad water pump. Good Luck!

Jun 17, 2014 | 1986 Pontiac Fiero

1 Answer

86 fiero overheating


Low on coolant, air bubble in coolant, water pump faulty, coolant fan motor/relay/switch/fuse bad, collapsed hose only when RPMs are raised, bad thermostat, any of these could be the cause. Low coolant and electrical issues are easy enough to sort out.
Good Luck!

May 12, 2014 | 1986 Pontiac Fiero

1 Answer

My 1986 Fiero GT has a severe drop in electrical power when the headlights are on, or the a/c on high, with both on and the radio the car misfires and the volt gauge goes to 9volts. I have replaced the alt...


The problem is not with the + (positive) side of things. The problem is you have bad grounds.
With the car running, grab a voltmeter and check the voltage at the battery terminals. If it is above 12 volts then the alternator is charging, but that is no guarantee that the voltage is getting where it is supposed to.
Fieros don't have solder joints. When the harness needs to have a wire break-out, they just used a metal crimp to electrically connect it to the circuit. They don't conduct well especially over time as they're two different metals in contact with each other flowing electricity.
Anyways, try finding ground wires that are disconnected and not giving the electricity the path it needs to the chassis. Even though the skin of your car is plastic & fiberglass, the skeleton is steel and conducts electricity.
I had to go through my '86 GT and add a dedicated ground just for the front compartment accessories, then I went through the harness and actually soldered my connections. Its nice being able to see at night!

Jul 20, 2011 | 1986 Pontiac Fiero

1 Answer

How to change struts on 86 pontiac fiero


Jack up car.
Remove tires on back.
Remove Nut on top of each strut, located inside engine hatch.
Remove lower bolts from spindle.
Remove strut.
Use spring compressor to remove springs.
Reverse procedure to replace.

Apr 30, 2010 | 1986 Pontiac Fiero

1 Answer

My 86 Fiero SE clutch master cylinder is weeping


Replace it. Not a difficult job. Be careful the bracket on the V6 4spd. isn't strong so don't break it while loosening the slave cylinder retaining nuts.

Good luck,

Rebel Faggioli

Dec 30, 2009 | 1986 Pontiac Fiero

2 Answers

Cant open rear


get some jumper cables. go under he rear an hook the red up to the starter .black to a good ground hit the trunk button it should open.

Jun 30, 2009 | 1985 Pontiac Fiero

2 Answers

Fuse box


try here http://www.fieronews.net/fusion/downloads.php?cat_id=13 you can download the pdf files

http://www.fieronews.net/fusion/Downloads/Tech%20Downloads/Pontiac_Fiero-86-owners_manual.pdf

contains the fuse box diagram on page 101 of 111 of the pdf reader.

Nov 18, 2008 | 1986 Pontiac Fiero

1 Answer

Fan onradiator 86 fiero


your fan is in the front under the hood even though ur engine is in the rear

Jun 13, 2008 | 1986 Pontiac Fiero

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