Starting problem
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Joined: Jun 2001
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From: O Fallon, MO
Car: 2004 Corvette
Engine: LS1
Transmission: T56
Starting problem
OK, this will be long but I am trying to eliminate most questions up front.
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Here is what's going on. The car starts fine normally when cold. When shut off after letting it run for a while(few minutes to long trips) it will not restart for a few minutes at least. Sometimes up to 15. I've got it narrowed to a fuel problem because I can get to start immediately with brake kleen. I have tested for spark and have plenty. I have tried unplugging the MAF and it would start, but only twice it did that. I have a cranking pulse on the scanner when trying to start. The coolant temp sensor is OK also. I have used Noid lights to check for injector pulse and when plugged in they did not pulse until a few seconds after cranking. I have a new ignition module, cap, rotor, ECM. I have 11.56 volts at the injector plugs. I have checked grounds at the cylinder heads and body for a good connections. I have good fuel psi, when the key is turned on it will peg to 60 or better than hold around 45, but it will not start.
<p>
Any information or trouble shooting would be great !!!!!!!!!!!!
<p>
Here is what's going on. The car starts fine normally when cold. When shut off after letting it run for a while(few minutes to long trips) it will not restart for a few minutes at least. Sometimes up to 15. I've got it narrowed to a fuel problem because I can get to start immediately with brake kleen. I have tested for spark and have plenty. I have tried unplugging the MAF and it would start, but only twice it did that. I have a cranking pulse on the scanner when trying to start. The coolant temp sensor is OK also. I have used Noid lights to check for injector pulse and when plugged in they did not pulse until a few seconds after cranking. I have a new ignition module, cap, rotor, ECM. I have 11.56 volts at the injector plugs. I have checked grounds at the cylinder heads and body for a good connections. I have good fuel psi, when the key is turned on it will peg to 60 or better than hold around 45, but it will not start.
<p>
Any information or trouble shooting would be great !!!!!!!!!!!!
You may try the TPS, although not sure if it will affect much. Not sure how exactly what triggers the pulse to fire the injectors on your car, but you may check that. Sounds to my like your car is suffering from vapor lock though. you might what to try a new air and fuel filters, depending on how old they are.
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From: So.west IN
Car: 87 Formula/ 00 Xtreme
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60psi
That's enough to lockup an injector (to much pressure for it to open) but, that's just based on what happened to me and not factual.
That's enough to lockup an injector (to much pressure for it to open) but, that's just based on what happened to me and not factual. Thread Starter
Member
iTrader: (9)
Joined: Jun 2001
Posts: 341
Likes: 0
From: O Fallon, MO
Car: 2004 Corvette
Engine: LS1
Transmission: T56
the 60 PSI is just when the pump first starts, It goes back down to 45 in less than a few seconds. Air filters are new and fuel filter is 3 weeks old.
Chris
Chris
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