Question about 1999 Buick Regal
The car would start fine in the morning after driving around the block or accelerating it cuts off and would not start check fuel pressure good change spark plugs and ignition wire check eng lght on says random multiple misfire
You have a MAF and MAP, The mass air flow signal varies with engine load.It is attatched to throttle body. This if it is the primary signal can cause the problem you desribe try and disconnect it and see if it idles properly. The next item you need to inspect is the MAP ,manifold air pressure this is a back up for the MAF sensor.If this sensor fails you will not accelerate correctly and stall out flooding the vehicle with fuel. This monitor the MAF and your EGR. If the EGR valve is stuck open the vehicle stumble and stall out and affect the performance of the MAF and MAP.Make sure your MAP is connected and the vacuum hose is attatch this item is located at top rear engine compartment near fuel injectors
Posted on Feb 24, 2012
Sounds like the fuel pressure regulator maybe faulty.Pull vacuum hose off the fuel pressure regulator and the map sensor and if you see any fuel in them then replace the regulator.
Posted on Feb 24, 2012
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Posted on Jan 02, 2017
most likelly it is your fuel pump is not puting godd fuel pressure
have the fuel pressure test and if it is low have the fuel pump and filter replaced
Posted on May 28, 2008
CHECK FUEL PRESSURE IT SHOULD BE 41 - 47 PSI. IF NOT REPLACE FUEL FILTER.IF NO CHANGE. REPLACE FUEL PUMP.IF FUEL PUMP IS GOOD.YOUR PROBLEM COULD BE A INTAKE LEAK OR SPARK IGNITION PROBLEMS.ALSO USE A SCANNER TO CHECK FOR FAULTY SENSORS OR THEFT DETERENT PROBLEMS.
Posted on Sep 18, 2009
Tighten the cylinder head bolts to 50 N·m (37 lb ft) in sequence.
Posted on Mar 10, 2010
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