Idle fluctuation

[Newton]

I notice when I start the truck when it's cold the idle fluctuates a lot like it keeps droppin Like it's going to stall then picks back up like it's constantly fighting to keep the idle up so it won't stall but after it stays on for a few minutes the idle settles down steadily do u think it might b a vacuum problem? There no leaking lines that I know of

[Marine1Texas]

A few things to check

Make sure your idle stepper motor is working properly.

check those bolts on your intake, they can come loose and while cold the gasket is not expanded as they do when they heat up, causing a leak.

Make sure bolts are snug on your throttle body and your gasket is in good shape.

to test the vacuum hoses with some spray fluid, something like starter fluid, or brake cleaner.

[benjy_26]

I had the same issueon my '87 2.5. It went away after I installed a new intake/exhaust gasket and rebuilt my throttle body.

[Newton]

I had the same issueon my '87 2.5. It went away after I installed a new intake/exhaust gasket and rebuilt my throttle body.

 

 

A few things to check

Make sure your idle stepper motor is working properly.

check those bolts on your intake, they can come loose and while cold the gasket is not expanded as they do when they heat up, causing a leak.

Make sure bolts are snug on your throttle body and your gasket is in good shape.

to test the vacuum hoses with some spray fluid, something like starter fluid, or brake cleaner.

 

Have a new exhaust/intake gasket but.. new iac maybe throttle body?

thanks for the info guys

[benjy_26]

I'd definitely clean out the tb during the process. It can't hurt!

[cruiser54]

I'd definitely clean out the tb during the process. It can't hurt!

Clean the throttle body and IAC for sure!! 

 

Here's how:

 

http://cruiser54.com/?p=60

[Newton]

 

I'd definitely clean out the tb during the process. It can't hurt!

Clean the throttle body and IAC for sure!! 

 

Here's how:

 

http://cruiser54.com/?p=60

 

 

Thank you iac is brand new but definitely will clean out the throttle body

[cruiser54]

 

 

I'd definitely clean out the tb during the process. It can't hurt!

Clean the throttle body and IAC for sure!! 

 

Here's how:

 

http://cruiser54.com/?p=60

 

 

Thank you iac is brand new but definitely will clean out the throttle body

 

Most all the Renix system's issues can be avoided if tips 1 through 5 are done, along with regular maintenance. 

[Newton]

 

 

 

I'd definitely clean out the tb during the process. It can't hurt!

Clean the throttle body and IAC for sure!! 

 

Here's how:

 

http://cruiser54.com/?p=60

 

 

Thank you iac is brand new but definitely will clean out the throttle body

 

Most all the Renix system's issues can be avoided if tips 1 through 5 are done, along with regular maintenance. 

 

Thanks for the tips cruiser..love the website btw :thumbsup: