Posts: 21
Joined: 3/8/2003 From: United States Status: offline
I found an h-pipe at my local bone yard. couldnt pass up the deal $25 for it. Ever since I put it on the idle would go from 400-1100 would keep bouncing, I had it on long enough figuring it would level itself out. My ? is could it be the fuel that its not getting enough, or cause when i found it, it still had the old H2 sensors in it? Maybe they are bad?
Posts: 282
Joined: 3/7/2003 From: United States Status: offline
Most likely O2's. If not them, then possibly an exhaust leak, but I don't think an exhaust leak would cause it to idle like that. Put the O2's from your old h-pipe, that should solve the problem.
Posts: 3
Joined: 3/14/2003 From: United States Status: offline
yea try the old o2 sensers or why dont you go and buy some new ones also remember when you take out the "cats" the computer has a tough time trying to adjust for the increase in exhaust flow
Posts: 282
Joined: 3/7/2003 From: United States Status: offline
Mine was fine right when I put the X on, the O2's are before the cats, so the comp shouldn't have too much trouble. Only thing it may freak about is the sudden loss in exhaust pressure.
I had the same problem once. Do you still have all of the emissions equipment under the hood? I was changing a clutch and had to wrestle the air tube that comes from a solenoid behind the smog pump. There is a diaphram that is inside that must have split and caused a vacuum leak. Take the vacuum line off of the valve and see if that helps.
Posts: 6148
Joined: 11/6/2006 From: East Longmeadow, MA Status: offline
quote:
ORIGINAL: gotspeed87
yea try the old o2 sensers or why dont you go and buy some new ones also remember when you take out the "cats" the computer has a tough time trying to adjust for the increase in exhaust flow
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Bad idle after h-pipe install? - 
