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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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

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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:
Ignition Coil Connections:

For the 3.3L V6:
Firing Order:
Ignition Coil Connections:
o <--1
o <--4
o <--5
o <--2
o <--3
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