Question about 1990 Oldsmobile Cutlass Calais

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Back fires through carbarator

My 1990 olds cutlas cilais back fires through the carb only when driveing but idels good would a vacom leak cause this ?

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I had that problem. the car would backfire and shut off. it turned out that one of the valves wouldnt close all the way, and it would backfire through the head. i dont know a lot about cars, but this was my problem. replaced one of the valves and it was fine.

Posted on Jun 23, 2008

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I start my engine on my 1990 oldsmobile cutlas ciera and when i give it gas it shuts off as if it gets choked up or something? Plz help


There are a range of thing that could cause this. Check the mass air flow sensor if it is dirty carefully clean it... Make sure your vacum lines are in good shape and have no leaks... Also check fuel system from pump to injectors. That did it for mine

Sep 18, 2014 | 1990 Oldsmobile Cutlass Ciera

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My 1990 olds cutlas ciera stalls at red light, will start backup but stalls again as soon as put it in drive but can put it in neutral and will stay running until I put it back in drive and stalls again


The emissions controls, vacuum hoses etc are likely blocked up causing a lack of response from the engine when pulled into gear.
Most auto's have an anti stall device. There are several devices that need to be cleaned and or hose checked for blockage or wear/leaks around the engine/trans to determine the fault. Bear in mind this is a 24 year old car and may be just needing a little TLC.

May 20, 2014 | Cars & Trucks

1 Answer

1990 ford 5.8 liter truck idels funny and kinda sounds like it is missing but spark plugs look great and new wires did nothing only has 67,000 miles


Could be a long list of things including dirty injectors or a leaking EGR valve.
The coil could be weak or the distributor cap and rotor may be shorting to ground. Has the fuel filter been replaced ?
You'll have to go down the list and try to eliminate components to narrow down your options.
Does it happen all the time, only when you are accelerating, etc.

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My 1990 f150 302 5 speed starts up but wont stay idling unless i keep it running myself


clean the idle air control valve and pcv valve with spray carb cleaner. The IAC controls idle speed but gets gummed up. The pcv valve may cause a vacuum leak as well so clean or replace. And lastly clean the throttle bore and butterfly valve using an old toothbrush and some towels. Check the electrical connection at the IAC for security and corrosion and clean as needed.

Jan 16, 2011 | Ford F-150 Cars & Trucks

1 Answer

Some times my 1984 ford f150 idels fine when its in park(some times)but when i put it in drive or reverse idel drops about 500 or so rpm sputters for a little bit and then dies. Some times it runs fine...


In general, yes. This is a carb tuning issue. Another possibility is a vacuum leak somewhere, but most likely, it's a carb issue. You'll typically see your rpm drop a bit when you put it in gear, but that it sometimes stalls out points to a carb issue.

May 20, 2010 | 1984 Ford F 150

1 Answer

Coil wires all off coils on a 1990 Cutlas Ciera


For the 1990 Oldsmobile Cutlass Ciera.
Engines 2.5L and 3.3L included below:

For the 2.5L In-Line 4-Cylinder:
Firing Order:
1-3-4-2
Cylinders:
........(back)
1......2......3.......4
........(front)
Ignition Coil Connections:
(back)
...1
...4
...2
...3
(front)

For the 3.3L V6:
Firing Order:
1-6-5-4-3-2
Cylinders:
........(back)
2.........4.........6
1.........3.........5
........(front)
Ignition Coil Connections:
(back)
__
o <--1
o <--4
__
o <--5
o <--2
__
o <--3
o <--6

Apr 11, 2010 | 1990 Oldsmobile Cutlass Ciera

2 Answers

1981 Toyota 4wd pickup- carbarator problems?


new carbs are expensive, don't even thik about a use one, find someone who has experience rebuilding carbs, usually an older mechanic like me, i figure around $350.00 , it should take a couple of days couse it should soak overnight in cleaner,

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1 Answer

1990 oldsmobile cutlas calais 3.3L runs fine in park and neutral


Torque converter clutch is stuck on. Need to visit transmission shop unless you are experienced with internal transmission repairs.

May 01, 2009 | 1990 Oldsmobile Cutlass Calais

1 Answer

Back fire while driveing


check for vacuum leaks at your throttle body, intake manifold gaskets and vacuum line, or you could possibly have a sticking valve. if I am understanding you rite the truck sat for 2 years. also check the wiring to your sensors as for a rodent may have chewed some insulation off, this happened to my sons car.

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