88 4.3 egr problem

[Erlingmj83]

Here's my issue I have a 88 c1500 4.3 center bolt valve covers my issue I've replaced tps, egr,and all vacuum lines . when my truck,is cold,it has plenty of power as soon as it's up to operating temp it's a DAWG!!!! And when I drive 55 mph plus for about 5 min the CEL comes on and sends trouble code 32 for the egr as soon as I kill it and restart the CEL goes off no clue what to do it has stock everything as far as I know and its a newer motor than stock and the is no smog pump and no cat on it please any advice or recommendations. And just curious I wanted to know if my engine is a vortec and way to confirm if it's a vortec motor I guess casting number locations to check to c what motor is in my truck since it's not org motor

 

[dylan94sierra]

I'm having the same issue but I'm completely stumped

 

[AgentYager]

Isn't the EGR on these controlled by a solenoid? Have you checked that?

 

[skylark]

Is the vacuum line on the correct port on the throttle body?

 

[Erlingmj83]

No it's a straight vacuum line that opens and closes it

 

[dylan94sierra]

I think the egr is run off the vacuum

 

[Erlingmj83]

As far as I know yes from what I have seen on Google do u possible have the correct diagram or a link to the correct diagram or email it to me [email protected]

 

[AgentYager]

Yes vacuum but the vacuum is controlled by a solenoid, if it were just a straight vacuum then the egr would always be opened which would cause it to run like garbage.

 

[wally]

If it's still running the tbi it should come from a port from the front of the tbi to the left a little bit and it goes to the egr solenoid by the egr and then to the egr valve

 

[Erlingmj83]

Yes that's how it set up sorryvvacum to solenoid then tovegr ... The second port off that solenoid is just a vent correct ..thought I read that somewhere