Start/Idle

JohnBoySS
25

Asked by JohnBoySS Apr 06, 2013 at 02:56 PM about the 1988 Pontiac Fiero Base

Question type: Maintenance & Repair

88 Fiero 4cyl.  Sometimes it acts like maybe it is flooded.  Wont start.  Wait about an hour and it starts but idle bounces between 500-1500 rpm for a minute then smooths out.  Has a new IAC and fuel filter.  There is a little whistle around the Throttle Body but I can't seem to pinpoint it.
Throttle Position Sensor maybe???

4 Answers

tenspeed
52,355

Some of the 2.5's have TPS issue. Look around for the whistle. It might be a intake leak that would lean out the fuel mixture. You can hold a piece of hose to your ear and move it around to find the source.

1 out of 1 people think this is helpful.
JohnBoySS
25

Thanks for the reply. :) I have a stethoscope so I took the probe off and used that. The whistle seems to be coming from around the cyl 1 intake. I already have the gasket off so I'll get a new one next week and give that a go. Next thing would be a TPS if it still bounces the idle. We'll see. :)

tenspeed
52,355

Check out the related questions at the bottom of the page. There might be some useful info in them. Thanks for the "Helpful" click.

JohnBoySS
25

Well, I go the intake gasket on. No more whistle. Still bounces from arount 500-1500 when it starts. Really low/no power ant low rpm/idle especially when it's cold. The engines aren't that cold blooded are they? How about a new TPS? Any ideas/suggestions a welcome.

Your Answer

Add photo

Related Questions

  • Hard Start with High Idle 2 answers

    1984 Fiero SE Automatic. This one is driving me crazy! I has spend about $1,000 in parts and repair time at a local shop. Car always had a bit of a high idle (about 2,000 RPM), but I could live with...

    1984 Pontiac Fiero SE or Indy

    -

    Maintenance & Repair

  • idle rough and cuts off after running car for a extended period of time 1 answer

    V6 engine, Car runs great but after running car for a period of time, when stopping it starts to idle rough and cuts off, starts right back up with no problem, sometimes when put back in gear cuts bac...

    1988 Pontiac Fiero Formula

    -

    Maintenance & Repair

  • Hard start and a bit lean 2 answers

    Just got an 88 Fiero. Most of the time it runs great. BUT! Sometimes it will start, run for a second or 2 then quit. Does that several times running longer each time the eventually keeps running. At f...

    1988 Pontiac Fiero Base

    -

    Maintenance & Repair

  • Rough idle 6 answers

    I have a 1984 pontiac fiero and it idles quite rough and a mechanic said it may be a leak in the oil pan. I'm not sure what to do.

    1984 Pontiac Fiero

    -

    Maintenance & Repair

  • My Grand prix starts every time but will only idle for 3 or 4 seconds 4 answers

    I was driving at 60 miles and hour and pressed the gas to get in front of someone and the car cut off. It will start every time but will not idle more than 3 to 4 seconds. There are no warning lights ...

    1998 Pontiac Grand Prix 2 Dr GTP Supercharged Coupe

    -

    Maintenance & Repair

Fiero
Looking for a Used Fiero in your area?
CarGurus has 69 nationwide Fiero listings starting at $3,995.
ZIP:

Search Pontiac Fiero Questions

Pontiac Fiero Experts

#1 dandyoun
dandyoun
Reputation 140
#1 Andrew Welsh
Andrew Welsh
Reputation 140
#3 Steve Neyens
Steve Neyens
Reputation 110
View All

Related Models For Sale

Used Ford Mustang"
1,078 Great Deals out of 24,193 listings starting at $950
Used Mazda MX-5 Miata"
83 Great Deals out of 2,407 listings starting at $1,999
Used Chevrolet Corvette"
384 Great Deals out of 10,546 listings starting at $3,450
Used Chevrolet Camaro"
678 Great Deals out of 28,126 listings starting at $2,399
Used Pontiac Firebird"
22 Great Deals out of 850 listings starting at $2,495
Used Porsche 911"
136 Great Deals out of 3,255 listings starting at $3,995
Used Toyota Supra"
44 listings
Used Nissan 300ZX"
5 Great Deals out of 141 listings starting at $2,995