Question about 1990 Oldsmobile Cutlass Supreme Conv

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1990 cutlass supreme 6 cyl. engine will not take gas after it warms up,it stalls,it runs fine when you first start it, changed iac switch plus new heat sensor, still no help, has new oxygen sensor plus new computer

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  • Oldsmobile Master
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I hope you did not replace all of that trying to fix this problem.
Has anyone checked fuel pressure cold and hot yet ?

Posted on Jan 23, 2013

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 1990 Oldsmobile Cutlass Supreme died and won't start

suggestion :
I have some experience with my oldie cutlass 90 that I had import to my farest country : CHILE .
My car seemed to run in three cylinders , of 4 .then started to run good in cold and after 10 minutes stop and die for a long time ...a few days after strat again and dies and so .. I studied about I read about the prom I learnt all abo¡ut this kind of irregular fails that even experiencied machanics can´t solve ...( It took 6 months and seven mechs to solve )..
the cars falls in limp in mode ( a kinda mem programmed mode for a few minutes and everybody thinks it the crankshft sensor , the ignition module , the ecu fial etc simply is code 51 : mem cal fail and limp in state i suggest work with and a code reader and it could be that kind of irregular fail..
ah. it´s too hard to find the eprom so the ECU dealer usually sell it without the eprom .. mine is ANLP 3645 ) federal emission .if you know when can I buy this or a good used one . I ´d shop it again cause I don´t want suffer about it again.. luck

Posted on Feb 16, 2009

66 chrgr
  • 1011 Answers

SOURCE: type of freon used in 1990 olds cutlass supreme. new or old?

This car uses r12 freon that is the old stuff but you can have your system converted over to the 134a.

Posted on Jun 18, 2009

cadman000
  • 607 Answers

SOURCE: my 83 cutlass supreme check engine light on

sounds like could be a carb providing an excessive amount of fuel any signs of black smoke from exhaust ), overdue need of spark plugs, or if everything proves ok, a faulty ox sensor

Posted on Apr 02, 2009

  • 1 Answer

SOURCE: 1990 Olds cutlass supreme 6cyl 3.1 engine; motor starter works ok

1990 OLDSMOBILE 3.1 6 CYLINDER ENGINE I WOULD LIKE TO KNOW LOCATION ON ENGINE WHARE CRANKSHAFT POSITION SENSOR IS LOCATED

Posted on Nov 06, 2009

samtoler
  • 666 Answers

SOURCE: 1994 3.1 cutlass supreme surges/hesitates at

This sounds like fuel pump failure

Posted on Jun 09, 2010

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1 Answer

Cutlass supreme 1990 international series fails


how about the fuel pump you inspect it already ?measure fuel pump pressure for standard value

Dec 05, 2013 | 1990 Oldsmobile Cutlass Supreme Conv

1 Answer

Just got a 1990 olds cutlass suprime.has the3.1 v6.car has set outside for 1 year and not run.has trasmission leak at the pan.plan on replacing fiter and gasket.how much fluid does it take?car runs rough...


Just changeing the filter and gasket, you shouldnt need much more than 4 liters (1 gal) just keep checking and dont over fill it.

as for the rough running after warm up. could be mass air flow sensor, to test, when car warm, tap the sensor wiht the handle of a screw driver when its running.. if it stumbles or stalls when you tap it. then it needs to be replaced. it could also be coolant temperature sensor, or leaking EGR valve.

Nov 25, 2009 | 1990 Oldsmobile Cutlass Supreme Conv

4 Answers

1990 Olds cutlass supreme 6cyl 3.1 engine; motor starter works ok


1990 OLDSMOBILE 3.1 6 CYLINDER ENGINE I WOULD LIKE TO KNOW LOCATION ON ENGINE WHARE CRANKSHAFT POSITION SENSOR IS LOCATED

Jun 12, 2009 | 1990 Oldsmobile Cutlass Supreme Conv

1 Answer

Engine stops running after warming up.


you have a failing crankshaft position sensor

Apr 13, 2009 | 1990 Oldsmobile Cutlass Supreme Conv

2 Answers

Car stalls when you let off the gas when warm or idling


sounds like your IAC (idle air control valve) located on the throttle body towards the front of the engine held in by 2 torx screws. the iac controls the idle if the car when your not on the gas. i will post the steps to clean the iac and the passages that the iac goes into.

1. disconnect the iac connector
2. remove the iac
3 clean the iac pintle valve and check for wear
4. clean the passages that the pintle valve sits in (usually carbon build-up in there, you may need to remove the air intake tube and air filter box to get to the passages in the throttlebody)
5. if the iac looks ok and the passages are cleaned re-install and put everything back
6. start car and see if it idles like normal when warmed up. you may need to give it a few tries for the iac to re-learn its proper position so give it a few warmup cycles
7. if it still stalls check for proper operation of the iac via ohming out the connectors (if you look it up on google you will find the specs at which the iac is supposed to operate)
8. if the iac is working properly, check for vacuum leaks on the intake manifold and vacuum lines.
9. if no vacuum leaks are present and the iac id working properly after cleaning have a shop check the ecm (engine control module) for a bad circuit board, i've seen that haoppen as well

hope this helps!

Feb 16, 2009 | 2000 Pontiac Grand Am GT

1 Answer

95 Ciera Hesitates & stalls when warm


Change the IAC the idle air control. You may be able to clean it and put it back on.

Jan 07, 2009 | 1995 Oldsmobile Cutlass Ciera

1 Answer

Lack of power


You need to check a service manual on this but it sounds a bunch like a cold-start valve isn't closing once the engine is warm and this would cause an overly rich fuel-air mix that would gag a warm engine. I don't know if your car is equipped with  one or not. 

Jan 06, 2009 | 1996 Oldsmobile Cutlass Supreme Coupe

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