Start/Idle

JohnBoySS
25

Asked by 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
81,305

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
81,305

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 3 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

  • 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

  • High Idle 2 answers

    My fiero developed a high idle problem, idle near 3k, I have checked for vacumn leaks, throddle body is ok and have replaced the throddle position sensor, any help would be appreciated....thanks

    1985 Pontiac Fiero GT

    -

    Maintenance & Repair

  • Fiero A/C Idle Problem 2 answers

    I own an 88 Formula, manual. Right when I turn on my compressor sometimes it drops my idle so low it kills the car. This happens usually when I turn on the compressor right when I turn the car on, b...

    1988 Pontiac Fiero Formula

    -

    Maintenance & Repair

  • Start fine, idles fine, stalls when given gas

    Girlfriends car starts fine and will idle fine but when given any amount of gas it immediately stalls. I've researched and discovered lots of possible causes just looking for a little help narrowi...

    2000 Pontiac Grand Prix GT

    -

    Maintenance & Repair

Fiero

Looking for a Used Fiero in your area?

CarGurus has 67 nationwide Fiero listings and the tools to find you a great deal.

ZIP:

Search Pontiac Fiero Questions

Pontiac Fiero Experts

#1 dandyoun
dandyoun
Reputation 200
#2 THORNY68
THORNY68
Reputation 190
#2 Andrew Welsh
Andrew Welsh
Reputation 190
View All

Related Models For Sale

Used Pontiac Firebird"
7 Great Deals out of 765 listings starting at $2,750
Used Ford Mustang"
305 Great Deals out of 42,663 listings starting at $1,999
Used Chevrolet Camaro"
189 Great Deals out of 25,416 listings starting at $2,500
Used Chevrolet Corvette"
151 Great Deals out of 16,802 listings starting at $2,995
Used Toyota MR2"
16 listings
Used Ford Bronco"
205 listings
Used Pontiac Grand Am"
1,914 listings starting at $1,500
Used BMW 3 Series"
956 Great Deals out of 34,757 listings starting at $650