Question about GMC Sierra 1500
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Posted on Jan 02, 2017
SOURCE: I have a problem with
I had the same problem with my 1990 chevy 1500 (350) replaced the plugs and wires no luck. I replaced the fuel pressure regulator, still no luck. So i called my mechanic he said it would either be the map sensore or the coolant temp sensor. I didnt figure the coolant temp sensor would cause my truck to flood but it was a 17 dollar part so i gave it a shot, took 10 seconds to switch it out with a 19mil deep socket. Truck fired up and ran like a top no more flooding. =)
Posted on Nov 20, 2011
check for spark could be your coil pack or a fuse for that a way to check is to hookup a 12 volt jumper wire to your + side of the coil and try it if still no spark then try seeing if yur coil is getting good ground
Posted on Dec 01, 2011
Change the ect sensor by the thermostat housing it is telling the ecm the outside temp is colder than it really is and the ecm is sending too much fuel to the TBI. NOte: the tps switch only works for idle and the egr is only for gas recirculation it will not cause the engine to flood.
Posted on Jun 03, 2015
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