maybe its getting a different reading from the tb and peddle see if this helps any. DTC P1516

 

So I decided to remove the TB today and clean the hole thing out scraped off old gasket a lil bit of a job. And cleaned the maf sensor again. Air drying now. Realized i didnt get the new gasket yet so will get one tomorrow.

 

I removed the PCV and when I pulled the spring and PCV out they were covered with oil. Is this supposed to be like that? Also when I tilt the Throttle body unit side to side I hear and feel something ticking and tapping the wall. Is that normal?

 

Well I bought a new throttle body and put it on. it came with a MAF also which was cool and i replaced the fuel filter cause it was on my to do list. It didn't solve crap. It still dies after 25-30 min and wont restart. So I don't know guys. Fuel pressure regulator was a topic. Maybe the answer could be there. Wat u guys think now?

 

I'm also thinking it could be the ICM

 

You need to look at what is going on when the car will not start. That will give you a better idea what is going on. Your either loosing spark. signal to the injector or fuel pressure or any combination.

You should test for all three.

 

do ^^^, on my lt1 it had a bad icm and it would go 6 or 10 miles and die. 15-20 minutes later it would start right up.

 

So how do I test the ICM to know if its bad or good.

 

parts store can test but its not always right. if the icm is working at the time it shows good. icm has to be failing to show bad.

 

Did you check the connector at the tps? The wires break from the connector but still look ok.