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How do you change a water pump on a 1986 fiero

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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

It keeps overheating,what could it be from/

Head Gasket, Water Pump, thermostat, belt. Good Luck

Jan 11, 2011 | 1986 Pontiac Fiero

1 Answer

Engine will pump gas to start the engine but as soon as it started it would start pumping gas? i have a 84 thats doing it

The 84 was the first year of production and tended to have some problems. You can go to
for fiero specialists and parts.
Hope this helps!!

Nov 17, 2010 | 1986 Pontiac Fiero

1 Answer

Tachometer on my 1986 fiero gt is out of calibration it ,engine runs right but tachometer is off the graphs limits.

There's a good chance that the tachometer switch setting on the tachometer is broken. They use the same tach for different engine sizes and change the amount of cylinders with the switch. You might have to replace the tach

Jun 15, 2010 | 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

2 Answers

I need the firing order for an '86 fiero 2.8L V-6

The firing order for this car from right to left is:-

4 Cylinder is 1-3-4-2.


V6 or 6 Cylinder is 1-3-6-2-5-4.

Good luck and thanks for using Fixya.

Apr 11, 2010 | 1986 Pontiac Fiero

1 Answer


The place to start is the thermastat. Sounds like it is probably stuck closed.

Oct 10, 2008 | 1986 Pontiac Fiero

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