high idle educated guess

[Ranger#1]

will the temp sensor cause the iac to stay open and cause a high idle

 

[Nhaz]

not sure about the temperature sensor. but the iac itself can act up and cause the high idle.

 

[AllanD]

I was about to say:

"Since when does an IAC "need" anything else to cause it to phuck up?"

AD

 

[Otto]

probably a leak in the intake gasket or vacuum lines.

I had my EGR sensor replaced and a new intake gasket a couple weeks ago the idles been good so far

 

[Ranger#1]

no when i unplug the iac the truck dies [depending on the temp] so that eliminates a vac leak anywhere
this is a good working iac was removed in a good working order my orig also had a spacer plate looked like a iac bypass

 

[Ranger#1]

replaced the temp sender to the computer made no dif in idle

 

[beejium]

no code?

 

[Ranger#1]

no cel

 

[Ranger#1]

idels normal now i did nothing to fix it but rhe cel comes on and off throut the day and the responce off idle is alittle slow

 

[fastpakr]

Find out why the CEL is coming on and off. It should have stored a memory code.

 

[Ranger#1]

nope Nada it still does it checked for vac leaks ant there is no leak I'm beginning to suspect the o2 sensor as that is also probably a factor in my case of getting 12 mpg