Misfire

15

Asked by Feb 02, 2012 at 05:10 PM about the 1990 Oldsmobile Cutlass Supreme 2 Dr International Coupe

Question type: Maintenance & Repair

I have a 1990 Oldsmobile Cutlass Supreme WITH  misfire on cylinder 2 and 5. I replaced plugs wires and Coil also crank sensor. I still have the misfire. the engine is a 3.1L. There is no engine light and it runs rough when in gear going to stall. I had the module tested and Im about to pull my hair out. I like this car. so I want to ask someone else if they have any problems. I basically repaired all the igntion side. what could be telling cylinder 2 and 5 not to fire? and Im sure the Coils are good. and all the parts. If someone out there can give me a hand that would be greatly appropriated  

6 Answers

15

I guess we dont have any good Oldsmobile technicians out there.

1 out of 1 people think this is helpful.
125

check you coil take a plug and put on wire see if there is spark then also check compression see if you have weak compression hope that helps

1 out of 1 people think this is helpful.
65

Do you hear any ticking? The rocker arms will pull out of the cylinder heads that will cause a miss fire, if not check your ignition module that controlls voltage to the coils.

15

I replaced the module and it ran fine for a month and on the way to work the car ran bad. but did not set a code! the next thing Im going to check is 02 sensor. I have been going to school and been getting alot of knowledge about being a tech! so Im going to check the wires that go to the ecm. and go from there!

20

Check your fuel injectors, that is most likely the problem...

1 out of 1 people think this is helpful.
20

Check out your fuel injectors, you can OHM them out using a volt meter switched to ohms, cylinders 2 and 5 aren't on the same coil pack so those may be ok however they also could be bad but these cars have a bad fuel injector problem, lookup technical service bulliten on this for your vehicle, also have your fuel pressure tested to rule out fuel pump/filter problems

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Cutlass Supreme

Looking for a Used Cutlass Supreme in your area?

CarGurus has 140 nationwide Cutlass Supreme listings and the tools to find you a great deal.

ZIP:

Search Oldsmobile Cutlass Supreme Questions

Oldsmobile Cutlass Supreme Experts

#1 munron
munron
Reputation 560
#2 tennisshoes
tennisshoes
Reputation 350
#3 Rog Oneal
Rog Oneal
Reputation 320
View All

Related Models For Sale

Used Buick Regal
209 Great Deals out of 11,280 listings starting at $1,995
Used Chevrolet Caprice
174 listings starting at $10,900
Used Chevrolet Camaro
631 Great Deals out of 39,686 listings starting at $2,995
Used Ford Mustang
715 Great Deals out of 39,137 listings starting at $1,000
Used Pontiac Grand Prix
31 Great Deals out of 3,796 listings starting at $1,195
Used Honda Accord
1,263 Great Deals out of 78,832 listings starting at $969