No Power below 2k RPM

JohnBoySS
25

Asked by JohnBoySS Oct 23, 2012 at 10:01 AM about the 1988 Pontiac Fiero Base

Question type: Maintenance & Repair

My 88 Fiero 4 cylinder doesn't seem to have much power till 2000 rpm +-. If you rev it a bit and let up, it drops rpms so low that it almost goes dead and sometimes does. When it doesn't go dead it recovers with eratic rpm, up to 2k, down to 500. Does the up an down 2/3 times then levels at 1k. Whe you press the accelerator it's kinda hesitant/doggie. Kinda like a bad carb.
Any thoughts? Idle Air Control maybe????

3 Answers

pittsburgh2
30

IAC or EGR both will cause this problem

Andrew Welsh
205

Low power until 2000 rpm isn't that abnormal... unless its really low. I have the same thing on my '87 4 cylinder. The engine makes peak torque around 2300rpm, so that's about when you start to feel the power. IAC is the most likely source of the irregular idle issue. EGR doesn't have much of an effect on how this engine runs really. I've had mine blocked and unblocked and bolts loose and it pretty much always ran the same.

Jason Zane
3,595

also have you changed the fuel filter?

Your Answer

Add photo

Related Questions

Fiero
Looking for a Used Fiero in your area?
CarGurus has 57 nationwide Fiero listings and the tools to find you a great deal.
ZIP:

Search Pontiac Fiero Questions

Pontiac Fiero Experts

#1 dandyoun
dandyoun
Reputation 160
#2 Andrew Welsh
Andrew Welsh
Reputation 150
#3 Racer_X
Racer_X
Reputation 120
View All

Related Models For Sale

Used Chevrolet Corvette"
333 Great Deals out of 11,260 listings starting at $3,997
Used Pontiac Firebird"
23 Great Deals out of 763 listings starting at $2,477
Used Ford Mustang"
904 Great Deals out of 29,066 listings starting at $1,982
Used Jeep Cherokee"
96 Great Deals out of 40,179 listings starting at $1,400