what would cause misfiring to bounce around from one cylinder to another in 88 Fiero.

90

Asked by Jul 10, 2015 at 08:49 PM about the 1988 Pontiac Fiero GT

Question type: Maintenance & Repair

yesterday mechanic said one cylinder out. today checking...not sure which cylinder it is...
misfiring bouncing around from cylinder to cylinder... mechanic will continue to check.
Since it's not just one cylinder out it's obvious its not just a bad spark plug...plug wire
would act like that? or valve train?

9 Answers

62,185

Check the distributor module and the distributor,for random misfiring.

2 out of 2 people think this is helpful.
90

Thanks for this info.It gives me something to swing by the mechanic. so sure they will appreciate a back seat helper. LOL!!!

2 out of 2 people think this is helpful.
62,185

You are welcome,and it dont mahter who tells you whats wrong,the only issue is getting it fixed,good luck with it.

2 out of 2 people think this is helpful.
20,775

also check the dist. shaft for any play..test or change all plug wires/cap/rotor....

2 out of 2 people think this is helpful.
63,085

Also check the vacuum and mechanical advance mechanisms in the distributor. One other thing, not trying to be a wise guy but how old is the mechanic who's working on this car? If he's a young fellow he's not going to have any idea of what he's looking at. This car is 27 years old. You want an older mechanic working on it. Late 40s or older. Back in the '80s I was running into the same thing with my cars from the '60s. Even as recently as 2012 with my '93 Caprice, that I bought new, had the youngsters scratching their heads. HTH. -Jim

90

T_S_T you are so right...just get it fixed!

3 out of 3 people think this is helpful.
90

Kelly you answered yesterday too...thanks. taking note of all possibilities and running them by mechanic.

2 out of 2 people think this is helpful.
90

Js08016 thanks for your input today also...and you're not being a wise guy. Thought of that my self but there is a large staff at this place and some older. Talking to parts manager and he worked w/ Fiero's way back when and can't understand not getting his know how. Even though been driving new cars for many years this cylinder issue is a flashback into the past and there were just so many fixes...you all have mentioned them and hopefully they will figure it out. They looked at it for first time late this afternoon and were doing "testing" to see what was what and will keep checking it out on Monday. JUST get it fixed and move on! Thanks again.

2 out of 2 people think this is helpful.
63,085

You're welcome. Glad to help. -Jim

Your Answer

Add photo

Related Questions

  • What could cause one of the cylinders in the engine to go out in an 88 Fiero 6 cylinder 8 answers

    Just took car in for smog and mechanic informed me that one cylinder was not operating

    1988 Pontiac Fiero

    -

    Maintenance & Repair

  • 88 Fiero Sunroof Handle 4 answers

    Anyone out there have an old parts 88 fiero. I need a sunroof handle. Not finding one anywhere. :(

    1988 Pontiac Fiero Base

    -

    Maintenance & Repair

  • Start/Idle 4 answers

    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 ...

    1988 Pontiac Fiero Base

    -

    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

  • 1984 fiero swaps 1 answer

    I was wondering if there are any other transverse transmissions that are compatible with the RWD 1984 pontiac fiero or are 85-88 the only fiero thats can be modded

    1984 Pontiac Fiero Base

    -

    Car Customization

Fiero

Looking for a Used Fiero in your area?

CarGurus has 66 nationwide Fiero listings and the tools to find you a great deal.

ZIP:

Search Pontiac Fiero Questions

Pontiac Fiero Experts

#1 Steve Neyens
Steve Neyens
Reputation 220
#1 Andrew Welsh
Andrew Welsh
Reputation 220
#3 THORNY68
THORNY68
Reputation 210
View All

Related Models For Sale

Used Pontiac Firebird
7 Great Deals out of 787 listings starting at $1,800
Used Chevrolet Corvette
116 Great Deals out of 20,656 listings starting at $3,499
Used Ford Mustang
333 Great Deals out of 45,809 listings starting at $2,000
Used Chevrolet Camaro
135 Great Deals out of 35,355 listings starting at $1,995
Used Nissan 300ZX
131 listings starting at $3,995
Used Toyota MR2
23 listings
Used Porsche 911
94 Great Deals out of 4,404 listings starting at $11,900
Used Honda Civic
495 Great Deals out of 81,005 listings starting at $558
Used Dodge Charger
237 Great Deals out of 27,294 listings starting at $1,997
Used Pontiac Grand Prix
22 Great Deals out of 2,862 listings starting at $879
Used BMW M3
55 Great Deals out of 1,897 listings starting at $6,999