Ok the search function is pissing me off and wont include EGR in my search, so I cant find what i need, Thus posting a new thread.

I had to swap the motor on my car about 3000 miles ago because i had a massive rod knock in the stock motor. With the motor i put in, i have to have the EGR tube that is connected to the intake loose in order for the car to stay running and idle. I just tried to tighten down the egr again tonight because i thought that my car was done with that fit, but i was wrong.

So whats my problem?

In short, Car wont stay running when EGR is attached properly, has to be loose on intake manifold. Any Ideas?

 

bump. i need help.

 

possibly an idle air control valve or a throttle position sensor....is there a check engine light?

 

Nope, no check engine light.

 

Yeah I agree, without the egr tube connected, there would be a huge vacuum leak at the tube. The EGR isn't supposed to open until the engine is warm, and even then, if the EGR is bypassed or stuck there would be an check engine light. Since you need to have that vacuum leak at idle for the car to run, I would check the idle air control motor or even the passage for the idle air motor in the throttle body. Air is bypassed by the idle air motor to maintain RPM when the butterfly is closed, it can also increase RPM when the A/C is on to keep the RPM constant. With your EGR tube connected, will the motor start if you keep your foot on the gas pedal???

 

yeah if i floor it it will start and stay running. i can drive it and yada yada but I have to keep my foot on the gas and keep the rpm's above ~1000...

 

well 1000 is about where the idle should be, how low does it idle with the EGR loose?

 

with the egr loose, it idle normal. with the egr fully attached, it dies and i have to hold it at ~1000 (idle) in order to keep the car running.

 

Ok Chenzo, got any updates? Did clean your throttle body with carb cleaner, or are you running with the EGR disconnected?

 

Sorry, I havent had time to do anything. Finishing up a rebuild on another motor. The EGR is still running disconnected. I probably wont get at it until Thanksgiving, Ill let you guys know whats up Thursday or Friday.