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Sorry guys, i totally forgot to mention, it's a 1997. Code reader should be here tomorrow so that should help me out a little bit. So go through and check all my vacuum lines to make sure they're not leaking? Would a leaky PCV valve (the two on top of the valve cover) leaking cause something...

TPS has been swapped out with a good one to no avail. There is no rear 02 sensor on this jeep, but I thought only the front one had to do with controlling the engine? If it is the 02 causing that why would it run fine before and then start acting up?

It's a 4.0/AW4. It seems to idle rough, and the second you start to rev it up it goes BUP BUP BUP BWAAAP (studders and then takes off). When you're driving it, if you touch the gas pedal like an egg shell it goes okay, but pretty much dies on hills. If you mat the pedal, the exhaust starts...

No. Factory harness. Maybe i should be googling the diagram for showing what each wire on the headlight switch does and then see if i have power there.

I'd be making sure all the torque convertor bolts were still in it, making sure the shifter cable was hooked up properly and actually shifting, and then i'd make sure you seated the torque convertor into the transmission all the way before you bolted it up (even if you didn't pull it out it...

1997 XJ. 4.0/AW4 Bought it to fix up to drive as a winter beater. Currently undoing some previous owner hackery. Anyways, i have no headlights. Marker lights work, blinkers work, tail lights, work but no headlights. I swapped out the headlight switch from an XJ i parted out (no i don't know...

Also just noticed that i have ten pounds of oil pressure with the key on.

Ok. Gas tank is fixed, new motor is in. Only thing left is this PO122 code, and figuring out what's up with my gas gauge. I noticed this tonight. Do these two things share a ground or something that would explain this? Gas gauge doesn''t work (pegged at E) and i have a code P0122 (TPS low...

2001 Jeep Cherokee. 4.0/automatic. Motor was shot. Knocked really bad and i believe the block was cracked. I swapped a 99 motor into the jeep. My problem is the jeep runs terrible. It seems to idle fine, but when you step on the pedal (in park) it gets to about 1,800 RPMS and then starts...

Ha, depends on what you're doing. Take a good look at your exhaust manifold. Right at the crotch to be specific. Right where the two pipes connect to one they tend to crack right in the middle from your motor mounts wearing out. The newer style intake should yield you about ~15 horsepower...

You can buy DOM tubing from Ruffstuff. I think you can only buy 4 and a half feet or so lengths though. Anything longer than that you need to buy from a local steel supplier. Matt, awesome work. That things looking awesome.

OP. The "Log" style is 84-98. The "Horse-shoe" style is 99-01. Buy an intake/exhaust manifold gasket for a 98 cherokee and bolt that intake manifold on. It will swap right on without any problems. After that unbolt your throttle body from your old intake and bolt it onto the new intake. Now...

Just tried unplugging the airbag; same problem. I did notice that the gas gauge is also acting up. Said i had half a tank of gas, then instantly tanked down to no gas. Cycled the key again, quarter tank of gas. After clearing the CEL it didn't go off AT ALL. Cleared two of the three codes...

Much appreciated. :thumbup: I'll try that when i get the jeep back in the garage. Rainy and snowy here at the moment.

Wouldn't my airbag light be on or not necessarily? That would cause the instant on TPS light i have?

Jeep is throwing these codes; PO123 - Throttle/pedal position sensor A circuit high input. P0122 - Throttle/pedal position sensor A circuit low input. I googled it before, and only one guy seemed to have the same issue as me. Turned out for him one of the wires was chaffing on the back of...

The one you torqued to 100ibs; did you put a sealant on the threads of the bolt?

OP, put a 3/4" socket on the crank bolt in the front of the engine, and try to manually turn the motor over. See if it's locked up or hard to move. Looking at that picture you just posted that bolt head i see in the picture is alarming. I have no idea what it's for or why it's there. Unless...

Have a 2000 Jeep cherokee. 4.0/AW4. Motor has a knock to it. Bought it for cheap as the previous owner cracked the head, and coolant was mixing with the oil. Motor didn't run when i bought it, so i slapped an 0630 head on it. After that, that's when i realized it knocked. Obviously the bottom...

Rockers/pushrods were from the 0331 cracked head. I had the rockers next to the cylinder push rods that it came from and when he kicked it they all shifted around and three or so hit the floor. Not really sure how to fix that. Rear main seal actually doesn't leak on this. You're seeing oil...