04 no start when hot
#1
04 no start when hot
I have searched through the many great threads on this forum for an answer. I see a few have had this but no one has responded. I have a random no start when engine is hot. I drive it to temp, go in a store for <30 and I get a crank no start condition. I I have put in a new fuel pressure regulator and that worked for about three days. A new pcv valve and tube with new grommet and hoses, that worked for a few days. I found a damaged (not completely broken) whit wire on my TPS I replaced the connector to that and again for about 2 days no problems. I cleaned all fuel management sensors and connectors and no change there. I connected my scan tool and no issues found. Could this be a vapor lock situation? Will replacing fuel pump help this? I will check to see if spark is present the next time it wont start.. Will an cam or crank sensor go bad with out throwing a code?
#3
CF Monarch
I have searched through the many great threads on this forum for an answer. I see a few have had this but no one has responded. I have a random no start when engine is hot. I drive it to temp, go in a store for <30 and I get a crank no start condition. I I have put in a new fuel pressure regulator and that worked for about three days. A new pcv valve and tube with new grommet and hoses, that worked for a few days. I found a damaged (not completely broken) whit wire on my TPS I replaced the connector to that and again for about 2 days no problems. I cleaned all fuel management sensors and connectors and no change there. I connected my scan tool and no issues found. Could this be a vapor lock situation? Will replacing fuel pump help this? I will check to see if spark is present the next time it wont start.. Will an cam or crank sensor go bad with out throwing a code?
#4
put a fuel pressure gauge on the system and run the engine...shut it off and check for pressure bleed down. if it leaksdown….it can only go:
-back to the tank from a bad fuel pump check valve....typically this would cause an extended crank cold
-into the manifold thru the fpr
-into the combustion chamber from leaking injectors.
-back to the tank from a bad fuel pump check valve....typically this would cause an extended crank cold
-into the manifold thru the fpr
-into the combustion chamber from leaking injectors.
#7
I'm here for the party
44 is still low, should be 52-60. prob need to replace the pump and filter. my o2 ran ok with only 22 psi but try to pass someone and wouldnt go anywhere
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#8
leakdown into the manifold or cylinders is flooding...hence the hard restart. after a hot soak...try restarting it in clear flood mode. if it starts better...your on the right track.