after few minutes it losses power and dies

[soldi]

Hi! After solving immobiliser problem we have next one to take care .. car starts & drive but after few minutes it losses its power and dies, then wont start at all. When its gets cooler start again for some time then dies again and wont start until its cold.

Patient is IS200 '99 with 1uz-fe from LS400 '96

 

[spf_lexus]

Check the coolant temp sensor. I have heard similar symptoms when these go out. Also, when warm, unplug the MAF sensor and see if it runs better.

 

[lill daddy]

check out put of altinator too.... just put multi meter on the battery terminals when the car is running.... you should see around 14v

 

[sideshow]

check what yr missing
injector pulse or spark u should already have compression and air
thats all u need to test to narrow down whats at fault
spray something flammable down throttle body when it wont start and see if it starts
if it starts then that tells u its fuel related which might go back to the immobiliser
and maybe even put a scanner on it again and see if u r getting the "no start" code