View Single Post
Old 06-22-2011, 07:34 PM   #2
j cAT
AF Fanatic
 
Join Date: Oct 2007
Location: EVERETT, Massachusetts
Posts: 10,898
Thanks: 8
Thanked 432 Times in 431 Posts
Re: 2003 Z71 engine just stops and loses all power

Quote:
Originally Posted by bongobongo View Post
Help! When driving with AC on sometimes my engine just quits. Bell rings and all power is gone. I pull over. Shut off everything and it will start. However, it will stop again and sometimes when I put it in park with AC on, it will stop. Have replaced fuel pump recently and had dealership put on scope and they can't find anything.

Any ideas please?!
clean the throttle body/IAC with throttle body cleaner. If you have PCV mounted on the driverside valve cover replace it and make sure the vacuum hoses are not cracked damaged loose fitting.

the idle issues are usually these items ...

If this was all done recently then measure the fuel pressure. 53-62 psi.

what fuel pump manufacturer did you use ? airtex is known for failure.


idle speed should be a solid 500-600 rpm..if it varies ,,,the cleaning is required..I do this about 25-35,ooomi of use.
j cAT is offline   Reply With Quote