Totally lost ---- have searched and searched and can't figure out my miss

[withoutfear33]

Have a 1995 silverado. Auto tranny with the 5.7 TBi. The truck runs wonderful for about 10 minutes then all the sudden when you set at stop lights it will cut out then run okay for a second then cut out again. Like I said runs perfect until it warms up then it only cuts out at idle, once you take off it runs perfect again.

I have replaced plugs and wires and Also swapped the entire throttle body with all sensors from a perfect running wrecked truck. I noticed the egr was delete and unplugged on this truck but I don't think it has anything to do with the misfire. I also unplugged the CTS and the truck went nuts so does that mean it's working?

Any help would be appreciated

 

[Silverstang84]

I might look into the egr man...

 

[withoutfear33]

I might look into the egr man...

I have another 95 with it deleted and it ran fine ,,

 

[95C1500]

vacuum leak?

 

[burkey05]

i'd check for codes first

 

[withoutfear33]

i'd check for codes first

My cel isn't on, could there still be a code stored?

 

[withoutfear33]

vacuum leak?

I've looked for one and can't find it. If it was a vacuum leak wouldn't it do it all the time and not only when it's hot?

 

[slippy3002]

How about your ignition module?

Sent from Robl@and!

 

[billy boy]

Intake gaskets will do this they deteriorate replace if have problem like this.


Sent from my iPhone using Tapatalk

 

[IOWNJUNK]

Bent or stuck valve will do this. Have you done a compression test?