1994 cadillac sedan deville 4.9 dies while i'm driving but then starts back up but only seems to be doing it in the extreme heat. We already replaced the egr valve the plugs & wires and the ignition module any ideas what it could be?
Fuel pressure regulator I guarantee you
Check the running fuel pressure before you just replace the regulator. Clean the throttle body and clean the idle air control pintle and seat area too.
Is it throwing a check engine light? Cam and crankshaft position sensors will cause the same problem when they go bad (usually heat kills them)
SOURCE: 1991 cadillac deville fwd 4.9 engine shudders hard
I have a 1991 Cadillac Fleetwood 4.9 120000 miles, I have the same problem. replaced plugs,wires,cleaned throttle body, and O2 sensor and have same problem. Taking it to a GM shop on 02/24/10.
SOURCE: 1994 Cadillac Deville Starting Problems
outta gas? water or impurities in the fuel causing fouling?? check spark plugs do a visual
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Camshaft aND crankshaft position sensors can do the same thing when they are going bad.
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