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Reload this Page 92 Cutlass rough idle, no service engine light
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Cutlass Series Includes Cutlass Ciera, Cutlass Cruiser, Cutlass Calais, Cutlass Supreme, Custom Cruiser, as well as the GM N-Body subforums.
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  #1  
Old 06-18-2008, 09:18 AM
rerr001 rerr001 is offline
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92 Cutlass rough idle, no service engine light
I have a 92 Cutlass Supreme 3.1 v6. One day all is good, the next morning starts but idle rough, missing, lack power on take off and shutters. After car ger moving when it shifts into overdrive shutter in very noticeable. Changed plugs, wires, fuel filter, cleaned egr, iac. same problem. I have no "service engine light", but light works. Please help.
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Old 06-18-2008, 03:32 PM
maxwedge maxwedge is offline
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Re: 92 Cutlass rough idle, no service engine light
Welcome to AF, many things can cause this, low fuel pressure, dirty/clogged/inoperative injectors, bad coil. Tough to tell from here, start by checking FP.
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Old 06-18-2008, 04:44 PM
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Re: 92 Cutlass rough idle, no service engine light
What will be the best way to do this? Plug in a pressure gauge at on the fuel rail?
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Old 06-18-2008, 07:44 PM
maxwedge maxwedge is offline
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Re: 92 Cutlass rough idle, no service engine light
Correct, you need at least 37 psi.
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Old 06-19-2008, 08:53 AM
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Re: 92 Cutlass rough idle, no service engine light
What problem would a blocked/ defective cat. convertor cause? Would it cause the SES light to come on?
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Old 06-19-2008, 03:54 PM
maxwedge maxwedge is offline
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Re: 92 Cutlass rough idle, no service engine light
Usually not on pre obd11 cars, no power on hard acceleration and a whistling or vacuum type sound from the exhaust.
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Old 06-20-2008, 08:37 PM
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Re: 92 Cutlass rough idle, no service engine light
Found bad coil, replaced runs good
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