Ohhh. Not sure, cyl 1 is the coolest of the engine and 6 the hottest. Maye that has something to do with it. Cyl 6 issues are common for that reason.

rpm goes up when i put my heater fan on 4... why.

Who sells XJ 2.5 in. exhaust tail pipes, I see Walker and DynoMax have some but they don't list the size.

Just the tail pipe or a catback setup?

Just the tailpipe, like this

Increased load on the alternator means the IAC lets more air in and the PCM dumps in more fuel. Alternator needs to turn faster to keep up with load.

http://performance-curve.com/

Yea, that's the one. Thanks

Rock auto has the walker tail pipe, says 2.5" which is whilst I will be ordering next payday. Turn downs are such a bad idea.

Says 2 1/4, read the fine print.

http://www.rockauto.com/catalog/more...255&cc=1180268

2.5" tip lol

Cylinder #1 failed on me. Locked up. Not sure why. Didn't care enough to find out.

I have checked all I know to check. Some days she will run just fine then just won't burn off all the fuel. I have a 90 Jeep Cherokee 4.0l. New map, o2, fuel pump, fuel filter, cleaned the intake. New spark plugs and wires, new distributor cap and router, cleaned all electrical connections, new injectors, and new ECM. Running out of ideas. Also did a compression test. All checks out fine. I even put all new fuel because a shop said I had bad gas. Anything would be awesome. Thanks

hello...does anyone could help me if its possible or compatible use diagnostic tool Vag-com to check my fuel pump timings ? because i changed earlier all seals and woarking fine however i saw a youtube video a guy checking this whit a laptop but now im not sure if buying this cable in ebay will woark in jeep cherokee ...thankx

I seem to recall lug nut torque specs to be 85/115. Is that correct? And if so, which is for steel wheels and which is for aluminum?

Diesel? What country are you in?

The tool you mention sounds like something a gynecologist would use.