Have fuel pressure checked. Check for spark when it won't re-start by using a tool designed to check spark or hold ignition wire barely away from module , while someone tries to start engine in short bursts. Try not to make contact with vehicle besides this hand and keep clear of moving engine parts. Best to use rubber glove there is a chance you may be shocked.
SOURCE: engine stalls at stop lights and stop signs
check the fuel regulator,while running unplug the red vacumn hose and if gas squirts out the hole,then it is bad,if not then possibly plugged catalytic converters,drive it on the highway if you can, and stop and look underneath at it and if it looks red,then replace them.Check to see if its overheating,usually a really hot hood tells the story.
SOURCE: my 2003 chevy impala idle high in park n when i
things to check: check for engine vacume leak
carbon build up at throttle body. idle air contoller maybe stuck due to carbon build up or defective
SOURCE: My 95' Chevy diesel k2500 stalls out when im Driving
I have replaced many injector driver modules on these diesels. GM has redesigned it and i have never had a replacement one fail. This is a known problem for the 6.5 diesel. Unfortunately its about a 500 dollar part from the dealer, and requires intake removal, and some very tight work space to replace.
Testimonial: "Thanks "
SOURCE: 2003 chevy impala ls starts then stalls
I have replaced the radiator in my 2003 Chevrolet Impala LS. The car started running hot and shut down. Took it to a radiator shop and found a crack in the radiator. I have replaced 2 thermostats in the car already. I noticed water running from under my car today and it seems it was coming back out of the overflow. I am stumped as to what is going on with this car.
SOURCE: My 2005 Chevy Impala smells gasy when ever started
SMELL GAS YOU NEED CHECK ALL FUEL LINES UNDER THE HOOD IN THE ENGINE COMPARTMENT.IF GAS IS STRONG UNDER HOOD YOU DONT SEE LEAKING FUEL LINES.YOUR FUEL RAIL FUEL INJECTORS LEAKING OR FUEL PRESSURE REGULATOR O - RING OR DIAPHRAM LEAKING GAS.IF FIND NO LEAKS UNDER THE HOOD CHECK FUEL LINES UNDER CAR FROM ENGINE TO FUEL TANK FOR LEAKS.IF ALL IS GOOD YOUR EVAPORATIVE CANISTER SOAKED WITH GAS OR YOUR EMISSION EVAPORATIVE SYSTEM NOT WORKING. DEALERSHIP HAS TO CHECK AND FIX.
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