cold engine question.
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i ain't rite
Joined: Mar 2005
Posts: 65,445
Likes: 5,517
From: Marlboro Mental Hospital.
cold engine question.
under 30 degrees when i start the truck it will run for 10 seconds or so then die. then to restart i have to hold full throttle and "clear it out" , it runs just like an old carb engine that is flooded.
i have replaced the purge valve twice now. it runs fine for a while, then starts acting up again. the current purge valve is three weeks old.
is there a temp sensor i am missing like the old GM 350's used that controls cold start? i had quite a few fuel injected 350's come in that acted like choke stuck closed, and changing the PCM temp sensor fixed them.
so i started thinking and am wondering if the 6.2 uses the same style system with two temp sensors, one for gauge and one for PCM?
i have replaced the purge valve twice now. it runs fine for a while, then starts acting up again. the current purge valve is three weeks old.
is there a temp sensor i am missing like the old GM 350's used that controls cold start? i had quite a few fuel injected 350's come in that acted like choke stuck closed, and changing the PCM temp sensor fixed them.
so i started thinking and am wondering if the 6.2 uses the same style system with two temp sensors, one for gauge and one for PCM?
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Joined: May 2004
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From: Home Base Nebraska
under 30 degrees when i start the truck it will run for 10 seconds or so then die. then to restart i have to hold full throttle and "clear it out" , it runs just like an old carb engine that is flooded.
i have replaced the purge valve twice now. it runs fine for a while, then starts acting up again. the current purge valve is three weeks old.
is there a temp sensor i am missing like the old GM 350's used that controls cold start? i had quite a few fuel injected 350's come in that acted like choke stuck closed, and changing the PCM temp sensor fixed them.
so i started thinking and am wondering if the 6.2 uses the same style system with two temp sensors, one for gauge and one for PCM?
i have replaced the purge valve twice now. it runs fine for a while, then starts acting up again. the current purge valve is three weeks old.
is there a temp sensor i am missing like the old GM 350's used that controls cold start? i had quite a few fuel injected 350's come in that acted like choke stuck closed, and changing the PCM temp sensor fixed them.
so i started thinking and am wondering if the 6.2 uses the same style system with two temp sensors, one for gauge and one for PCM?
If you don't have a reader I would get a bluetooth adapter and download the FORScan app, it will read about every sensor on the truck.
Denny
Thread Starter
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i ain't rite
Joined: Mar 2005
Posts: 65,445
Likes: 5,517
From: Marlboro Mental Hospital.
last code i got was from bad fuel cap three months ago.
this truck is a true head scratcher. besides the no cold start and eating purge valves, it also is only getting 7 mpg.
this truck is a true head scratcher. besides the no cold start and eating purge valves, it also is only getting 7 mpg.
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