2002 century 3.1 crank no start, every time I check something like MAF, the car will start and run for about a week, check fuel, check spark same results will run for a week and then one day not start. Now it seems the injectors are not working, and going to replace the cam sensor. All this and no codes set only ABS light on.
You ever change the fuel filter?
SOURCE: buick lesabre nightmare
Need to get a scan tool and look at the data stream while it is running for alot more info.Also any trouble codes.Sounds like initially,the engine isn't getting any fuel.I would have a pressure gauge connected to the fuel rail on the engine,so i could monitor the fuel pressure while all this is going on.Items to look at on the data stream would be timing,what timing is the PCM commanding for the engine.Also,have you checked for continuos power feed to the coils during this no start condition,and fire at the plugs while cranking.You could possibly still have spark,but maybe it is extremely weak?I have seen bad ignition switches cause weird problems before too.Many things power up through the ignition switch,just a thought.Have also seen bad PCM's cause strange problems..38 volts is a little on the low side for GM.Usually see those at,at least .50 and up,and rise steadily while pressing the throttle,up to just under 5.0 volts.Potentiometer with 5 volt supply.Vacuum leak can be checked with engine running at a steady idle speed,spray brake cleaner all around the intake manifold and listen for engine speed change.
SOURCE: car cranks, but hesitates to start after sitting for over 24hrs
Tune ups are always a good place to start , including air, fuel, plugs and for the extra 5 bucks a PCV valve. If these havn't been done in the last year at least might want to start there. If that doesnt make any difference please post again and we will look at something else!
SOURCE: 2000 Mitsubishi Galant Dying at Random
It seems like a ground problem. First check all fuses to see that they have a good contact. Second, verify the battery terminals for good contact. Third verify the charging condition in the alternator battery system., remember shoul be around 14volts with car running.
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