hard cold starting
#1
hard cold starting
hey there im kinda new here i own a 2000 ls 4.3,and it takes 5 or 6 or7 tryes to start the truck in the morning,once the truck is warm and running it runs graet and starts great,its driving me nuts........help please!!!!!!
#2
same problem. seems like comp. not going into open loop for extra fuel
#3
hi. what is comp and its function of open loop?
#4
When the engine is cold, it runs in open loop which means that it is running more off of a predetermined set of variables instead of off actual sensor information. I wouldn't worry too much about that though as it likely doesn't have a thing to do with your problem. There would have to be A LOT of other problems with the PCM for that.
So lets start off with some general questions.
When was the last time a tune up was done (plugs, wires, cap, & rotor)?
Is the check engine light on and if so, what are the stored codes?
Have you done any other routine preventative maintenance (clean EGR, MAF, throttle body, and/or IAC valve - take a look in the Tech Article DIY Index link in my signature for how-to's on these)?
So lets start off with some general questions.
When was the last time a tune up was done (plugs, wires, cap, & rotor)?
Is the check engine light on and if so, what are the stored codes?
Have you done any other routine preventative maintenance (clean EGR, MAF, throttle body, and/or IAC valve - take a look in the Tech Article DIY Index link in my signature for how-to's on these)?
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