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re: CHANGED HEADER GASKET now full throttle

2K views 21 replies 11 participants last post by  Jerry Bransford 
#1 ·
re: CHANGED HEADER GASKET now full throttle

I just changed the header and gasket on my 02 TJ. Now when I start the ride it goes to full on throttle. Thought it was my throttle cable binding,nope! Checked my dtcs, nothing! Anybody out there have an idea on this one? I have done this before and it has never reacted like this! Please help!!! Thanks guys!:confused:
 
#8 ·
Redid the whole header and intake manifold reseal this morning and it does the same thing? It will go too 6 grand rpm if I don't kill the engine! Gasket lined up great with Banks header. Everything went fine untill I started it again! Same thing. Yes my butterfly is closed on 62 throttle body. I even dissconected the throttle cable. Same thing!!
 
#11 ·
Unmetered air is getting in the induction side.......check all your hoses etc......chrysler rubber hoses are notoriously crappy.......ya may have bumped one or split the end when ya took it off and not even noticed it.....g
 
#12 ·
Did you clean the mating surface well?
Check all the lines.
Did you check for leaks around the base of the tb?
Did you check the surface of the intake with a straight egde always the chanch it's warped.

If you have a vac gauge check it out. A vac gauge can tell you alot about a engien.:D
 
#22 ·
You have a vacuum leak. Generally speaking nothing else, usually that is, causes that problem. This happens all the time when people work on their intake/exhaust manifold. If you have had the intake manifold off or loosened it up for any reason, you simply did not get it seated back into place against the head properly. Move it into the correct position, making double-sure it is properly in position, then tighten it down using the correct tightening sequence and ft-lbs. tightness. :)
 
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