Question about 1991 Chevrolet Corvette

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Put new fuel pump on, iac valve, tune up, new ecm91 vette, runs till it warms up then quits

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Did you try changing cam sensor Had 1995 2500 GMC did the same thing also when you change a cam sensor you should change crank postioning sensor because that will be next thing to go I learned the hard way.

Posted on Oct 29, 2012

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Posted on Jan 02, 2017

SOURCE: I have a 95 S-10

Check sprk plugs & wires for fouling, cracking, etc. Before heading in for the $$$$ overhaul, buy 2 cans of "Seafoam", 1 in gas tank with 5 gals gas( will treat up to 20/25 gls), 1 in crankcase. This is a GREAT product that for less than $20 may hold you over for awhile if indeed you have to tear into internal engine.

Posted on Aug 02, 2008

emissionwiz
  • 75807 Answers

SOURCE: fast idle after warm up .already changed IAC valve

fast idle is many times caused by a engine intake vacuum leak, use a can of carb spray and spray the top of the engine for leaks, if u hit one u will hear the eng change idle speed, also look for split or leaking vacuum hoses.

Posted on May 20, 2009

  • 1 Answer

SOURCE: Runs fine till warms up then losses power and dies

My 05 silverado 5.3v8 was stalling dead when it reach a temp of 170-200 degrees and wont start until cold and do the same thing till warm. I changed fuel pump, crank sensor, bought a cam sensor also.  It turned out to be a disconnected single ground wire that runs under the power steering and connects to main ground on bottom front. Now engine runs fine. I changed power steering a couple of times and must have wore it loose.

Posted on Sep 24, 2009

  • 819 Answers

SOURCE: Took off TPS? to clean up. Replaced with new

could have damaged the tps. if the tps shorts out and shows like its full throttle, it goes into clear flood mode and shuts down the injectors. try unplugging the tps and try to start. it it starts, replace the tps.

Posted on Jan 25, 2010

weekspena
  • 375 Answers

SOURCE: truck surges when cold runs fine then quits with

try the engine coolant temp sensor!

Posted on Jan 11, 2011

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hmm

try turning the ignition on,, let it sit for 30 seconds ,, switch it off and then start ,,,

if it works then your fuel pump is sending too low pressure,, change the pump...

if not then change the IAC valve and the oxygen sensor and the engine coolant temperature sensor..

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