Why is My 92' 3.1 chevy lumina running rough

Asked by Apr 08, 2014 at 11:06 AM about the 1992 Chevrolet Lumina 4 Dr STD Sedan

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

465

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.

I have the same problem

Your Answer

Add photo

Related Questions

Search Chevrolet Lumina Questions

Chevrolet Lumina Experts

#1 90V6RedHotLuminaEuro
90V6RedHotLuminaEuro
Reputation 1,170
#2 John Saffrahn
John Saffrahn
Reputation 1,050
#3 11jonny11
11jonny11
Reputation 890
View All

Related Models For Sale

Used Toyota Camry
845 Great Deals out of 90,116 listings starting at $950
Used Chevrolet Corvette
102 Great Deals out of 20,383 listings starting at $3,495
Used Chevrolet Camaro
146 Great Deals out of 32,809 listings starting at $1,995
Used Chevrolet Caprice
151 listings starting at $10,490
Used Nissan Maxima
280 Great Deals out of 26,380 listings starting at $1,989
Used Chevrolet Cavalier
1,073 listings
Used Honda Accord
761 Great Deals out of 87,629 listings starting at $1,250
Used Buick Regal
119 Great Deals out of 10,253 listings starting at $3,495