Hello everyone,
I have been searching on here for an answer with no luck or similar symptoms so I figured Terry would know, here is the story. The 99 CSVT went in to get trans removed. Once I got it back we put everything back together minus exhaust 3 weeks ago, just had headers on (was waiting for more parts) Started the car to make sure it would run after the trans replacement. It started fine and idled nice, motor sounded good. I did this twice within a few hours and it was fine. Later that day I started it and it would not idle, had to keep my foot on the gas. Yesterday I connected the full exhaust and its worse, still not idling and missing horribly. When I hold the gas down to around 3k, the motor will die and rev back. When it does idle it does so roughly at 500 rpm.
What has been done:
1: The egr downpipe had to be replaced due to a stripped nut on the header side. (could dirt have clogged something in the intake from not cleaning the pipe?)
2: Checked all connections & large wiring harness with bolts in them also.
3: performed a tune-up (coil, wire, plug) OEM
4: replaced new tune-up parts with old tune-up parts to eliminate chance of multiple issues
5: Checked plugs and all are firing, no wet plugs and they were all warm after a few sec of attempted run time
6: Checked all vac lines
7: cleaned iac, egr
My diagnosis with a guess would either be dirt clogging the intake or something electrical. Does anyone have another suggestion?
Thank you in advance for your input