It is gonna take a genius HELP!
It is gonna take a genius HELP! My car will not stay running at all. I am completly new to this so please bear with me, I did a trex cam install. I have headers, TSP true duals. When I started the car after the install it ran decently. But then it got progressively worse, plugs are fouled (they last 15 minutes) The ignition fuse blew in the engine compartment. Replaced that been fine since. I can start it, hold the rpm's at 1500 and it will idle slightly rough and then it will just drop all the way down to 600 then goes back up to 2000 then back to 600. Fuel pressure is a constant 58 psi. Tried running closed loop with sd tune to rule out MAF. I just don't know where to go from here!
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It doesn't sound like a vacuum leak as the car would idle high. Sounds like you need more air into the car and to check the AFR. Did you drill a hole in the TB? Thats an awfully big cam to be starting out tuning. 
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That won't help his current situation. The misfires from the untuned LARGE cam will read lean on the o2's, causing the computer to add fuel, causing more misfires, etc., until all the plugs foul. He needs to go to a tuner, or take a serious crash course in tuning. He may also need to drill the TB, or adjust the throttle stop.
TECH Fanatic
Joined: Jan 2006
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From: reading,pa
Not to say your wrong but when i had a vacuum leak it actually did idle lower and would die out.
