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I don't think you can do this without getting a cheek engine light. The Front O2 sensor is used to adjust the fuel mixture for complete combustion. The downstream O2 is there to diagnose the catalytic. I would bet that you can not run without either one, unless you generate a voltage somehow...

RE: Sorry....I have to brag.... If you are in California, then the smog check guys will catch it. Otherwise you might look at JCWhitney to see what it costs for a new high flow version and just replace it. I have heard that the mufflers get plugged too. Maybe having the muffler shop look at...

RE: Antone lose their JEEP? I replaced the rear motor mount on my 97 SE. It is pretty hidden under the skid plate. The reason I replaced it was that I was having jerking in particularly low gears. There had been a rock hit on the skid plate before I got the jeep and I thought that it had...

You know, it is odd to get such unrelated error codes. It is possible to burn up the Catalytic if the engine is missing. I wonder if the two problems are unrelated or occured at the same time. If they occured at the same time then I might suspect a ground on the engine or possibly a bad...

97 2.5L manual transmission Wrangler, VIN: 1J4FY29P8VP449112. ECM #s: Part #: 56041305AD, (could be HD, writing was a bit blured). Code: 26550 Date: 7/23/97 thx

Does anyone know if the computer and firmware listed below is correct for a 97 4 cyl? thx. 97 2.5L manual transmission Wrangler: 1J4FY29P8VP449112. ECM #s: Part #: 56041305AD, (could be HD, writing was a bit blured). Code: 26550 Date: 7/23/97

Brush with a Buick I have the post right after yours in the TJ forum and I too have wondered about the Catalytic converter. I haven't had the jeep long enough to test the MPG but it jerks and bucks in first gear and never really seems to get full power although the head is recently rebuilt and...

I think I'm gonna cry - HELP Problem in 97 2.5L manual transmission Wrangler: 1J4FY29P8VP449112. Jerks and bucks when in first gear, and to a lesser extent in other gears, either hot or cold. It never really seems to run strong. I bought and read the service and diagnostic manuals. I...

The saga lives on... I replaced the Throttle Position Sensor. It greatly reduced the problem but mostly it is still very much the same. The new TPS has a seal to keep moisture out of the guts of the sensor. The old one did not have one and did have moisture inside. (Price $70 - out the door...

Identification of rear end? Well, I now know what a control arm looks like. I took it to Chrysler-Jeep dealer and they used the ODB III which they said will do more than the ODB II. The ODB II would just provide codes when there was an engine check light but the III apparantly did check the...

The tires are 31" and there is no lift kit. It is a Chrysler product... and '97 was the first year that they engineered coil springs into the rear of the vehicle. It is quite a mishmash of arms and bars back there. I also noticed that both of the shocks were mounted on the back of the axle...

97 Wrangler 4 Cyl. 5 spd. It jerks when taking off, sometimes radically rocking back and forth unless you work the clutch and gass right. It is not the Fuel Pump, it was checked at the dealer. They also put a ODB 3 on it and said that there was no problem with the spark. They claimed that...