Question about 2003 Chevrolet Express

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On my 2003 Express, the warning lights come on while driving. Sometimes it almost stalls the engine. If I turn off the engine and start again it goes away but returns occasionally while driving. Is there a simple solution or do I need electronic diagnosis.

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1-This is an intermittent problem then a diagnosis probably could not show an error code. 2- Sometimes it almost stalls the engine then you don't have a right Air:Gas ratio 14.6:1. This ratio is to maintain a good combustion in the engine. This is control by ECM through output from the Oxygen sensor. When this sensor is bad it doesn't give correct information to ECM to control delivered gas. 3- A weak Fuel pump and a bad Fuel Accumulator not maintaining correct gas pressure for Fuel distributor could cause this problem.

Posted on Sep 06, 2009

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Most auto-zone or Midas shops will do a scan for free so long as the chk engine light is on try checking all fluid levels in your vehicle 1st it could also be wise to do a visual check of your wires and vacuum lines as well as just a low level of maby oil or radiator fluid even brake fluid level start with that area 1 st

Posted on Sep 06, 2009

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