Weird Jolting
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Joined: Oct 2018
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Weird Jolting
A buddy and I had just finished putting a set of headers on my '91 F-150 and it sounds good as all hell, it was fine all yesterday. Although when I drove to school the next morning (about 25 miles) it was a lot slower than usual on the interstate but i believe that is from the O2 sensor being taken out, we are going to drill a bung into the new headers to put the sensor back but we weren't able to when we were putting the headers on. all was fine and expected but when i got off the interstate for the last 5 miles or so, every time i was accelerating from low end of second gear it was jolting hard, just like a new driver in a manual, my buddy thought it was a miss fire but it was only happening during the bottom end in second gear, I'm not sure if the O2 Sensor would fix that or i just unleashed a whole new problem.
If anyone would know what it is or could help out it would be greatly appreciated,
Thank You,
Jack
If anyone would know what it is or could help out it would be greatly appreciated,
Thank You,
Jack
Logistics Pro
Joined: Mar 2005
Posts: 4,698
Likes: 47
From: Mexico, Missouri
Jolting...like a cylinder misfiring. Be sure you check every plug wire that it's SNUG on the plug. I've seen that happen and looks good but simply able to lift it off.
Also check that you don't have a plug wire that is making contact with the LONG tube headers. That will make it jolt and buck as the plug wire shorts out and melts to the header. Been there...done that.
Be sure that the headers are not near the wiring harness, very important on an E4OD.
And the quicker you get that O2 sensor installed, the better as your PIG rich and washing the cylinder walls down and ruining the rings.
Also check that you don't have a plug wire that is making contact with the LONG tube headers. That will make it jolt and buck as the plug wire shorts out and melts to the header. Been there...done that.
Be sure that the headers are not near the wiring harness, very important on an E4OD.
And the quicker you get that O2 sensor installed, the better as your PIG rich and washing the cylinder walls down and ruining the rings.
Lead Driver
Joined: Jan 2019
Posts: 5,076
Likes: 865
From: N.W. Alabama
should have a check engine light on? check codes? If when you unplugged O2 what did you do with the wire/connector leave hanging, could have worked its way on to header and melted to header, bare electrical wires on metal(header) no telling what issues could arise.
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dvldog458
1987 - 1996 F150 & Larger F-Series Trucks
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Nov 13, 2002 11:48 AM
