Why is My 92' 3.1 chevy lumina running rough

Asked by notamechanic92 Apr 08, 2014 at 11:06 AM about the 1992 Chevrolet Lumina Sedan FWD

Question type: Maintenance & Repair

The car starts and idles fine SOMETIMES. The main problem though is when driving.
The car spits and sputters while accelerating and even when maintaining speed.
Backfires a lot and there is a lot of back pressure coming through. when the car
sputters and jerks there is a bad exhaust smell that comes through the front of the car.
It shuts off on me all the time driving or sitting still.exhaust expert told me the catalytic
converter has already been gutted and we have replaced the plugs, wires, map sensor,
and iac valve. Been having this problem for a while now and just don't know what to do.
Troubleshooting codes it gave me are 23, 33, 42, 43, and 45. HELP ME PLEASE!!!

2 Answers
1,365

broisum answered 10 years ago

Try running it on a higher octane fuel, So long as it's a petrol motor, It might burn cleaner. It could well be the converter too, They can get clogged up with crap after a while. Have a look at the heat shield around the converter and see if it looks melted or burnt an rusty, That's a good sign that it's getting too hot cause it's clogged up. At that stage you might want to replace it.

Mark helpful

Your Answer:

Related Questions

  • Why is My 92' 3.1 chevy lumina running rough 2 Answers

    The car starts and idles fine SOMETIMES. The main problem though is when driving. The car spits and sputters while accelerating and even when maintaining speed. Backfires a lot and there is a lot of...

    1992 Chevrolet Lumina Sedan FWD

    -

    Maintenance & Repair

  • My 92' Chevy lumina apv van is not getting a spark. Won't start.. 1 Answer

    My 92' Chevy lumina apv van is not getting a spark. Won't start.

    Chevrolet Lumina

    -

    Maintenance & Repair

  • 92 Chevy Lumina 3.1 Multi Port 1 Answer

    When the car is started, it idles very high. I can't tell you what the RPMs are because it doesn't have that gage on it for whatever reason, but I can definitely hear that it's no where the idle sho...

    1992 Chevrolet Lumina Sedan FWD

    -

    Maintenance & Repair

  • 92 Lumina 3.1 won't start 2 Answers

    I have a 92 Lumina 3.1L that is getting good fuel pressure to the rail and fire to the plugs but won't start...it acts like it wants to but just won't quite do it. Anybody have any ideas why this ...

    1992 Chevrolet Lumina

    -

    Maintenance & Repair

  • 99' Chevy Lumina 3.1 1 Answer

    My lumina is popping the P0171 code says Bank 1 too lean and it failed emissions. I used a fuel system cleaner specific for passing emissions in hopes it would pass but it did not. Emissions told m...

    1999 Chevrolet Lumina LS Sedan FWD

    -

    Maintenance & Repair

Shortcuts

Search Chevrolet Lumina Questions

CarGurus Experts

  • #1
    90V6RedHotLuminaEuro
    Reputation
    1,680
  • #2
    John Saffrahn
    Reputation
    1,330
  • #3
    11jonny11
    Reputation
    1,190
View All

Find great deals from top-rated dealers

Search

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.