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#1
07-29-2009, 08:04 PM
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94, 3.1L olds cutlass Supreme
Cranks but wont start. All coil packs have blue spark, 42 psi fuel pressure while cranking, ignition module tested fine at parts store. Crank sensor , fuel filter and fuel pump have been replaced. Checked EGR vale, seems to be working fine. Tried a known good ECM and sill no go. Any suggestons?
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#2
07-30-2009, 08:02 AM
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Re: 94, 3.1L olds cutlass Supreme
The fact that you have spark suggests that the crank/cam sensors are working. About the only other things you need to check with a noid light is power to the injectors, and then there is the MAF sensor. U can also check your TPS because if it has some sort of voltage that indicates that the Throttle is more than ¾ open it will shut off the injectors so that the driver can clear a flooded engine. When cranking I believe that the MAF should read about 3-6 grams per secon
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#4
08-03-2009, 09:29 PM
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Re: 94, 3.1L olds cutlass Supreme
Pulled the upper intake and checked for injector pulse with a noid light and they tested fine. Also, tested the MAF sensor with a know good one and still won't start. Help!
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