Revs high... then dies!!!! after Header install????
Thread Starter
12 Second Club
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Joined: Jul 2005
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From: central coast, cali
Revs high... then dies!!!! after Header install???? Last week i had longtube headers on my car and i had to smog it. So I put the stock exhuast manifolds back on and tuned it and the car was running fine. Got smogged and i put the headers back, but not the rest of the exhaust, and i decide to start it up and it just wants to rev up high and then die!!! Whats up with that? anybody have any ideas? I checked and re-checked all the little things e.i. spark plugs/wires, hoses, bolts. And everything seems fine. Im thinking it might be the tune? I havent messed with the tune at all since i put the headers back on, but i was thinking that the car should run on its own fine... well, run crappy, but NOT rev up high and die like it does!
TECH Resident
Joined: Aug 2003
Posts: 970
Likes: 4
From: England UK
You say you have headers back on but not rest of exhaust. Well your O2's are going to be almost in free air, they will tell the PCM to add more and more fuel, and the engine will eventually stall.
Also
Did you mess with the throttle sensors at all?
Check the MAFS.
check the crank positionong sensor it is right behind the power steering pump on the block, in front of the first cylinder on the drivers side. Many times the wires are ripped or the sensor is cracked.
Did you mess with the throttle sensors at all?
Check the MAFS.
check the crank positionong sensor it is right behind the power steering pump on the block, in front of the first cylinder on the drivers side. Many times the wires are ripped or the sensor is cracked.
Thread Starter
12 Second Club
iTrader: (16)
Joined: Jul 2005
Posts: 783
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From: central coast, cali
it was my damn EGR port of the manifold, it was loose and letting air in causing it to rev high and then just die.... damn the little things on these cars!!! if its not one thing its another
TECH Apprentice
Joined: Oct 2005
Posts: 343
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From: Erin, TN
When I put my headers on, I had the whole exhaust hooked up (w/ a catted Y) and my car did that at first. I drove it around and it would almost stall out when I was at an idle so I parked it and shut it off, restarted it, and it was fine. I think it might be an internal engine diagnostic before it throws the code for the rear O2s???
