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Can anyone comment on a Pacesetter exhaust manifold as a replacement......

Can anybody offer a suggestion for replacing my cracked, stock exhaust header - TJ '99 4.0L - If I wasn't going to keep it I would just grind out and re-weld the small crack -

thanks guy's for your feedback, but I stopped by and talked with the mechanic this afternoon (my wife picked the jeep up yesterday) and after talking with him he corrected himself to state that in fact I have 3.73 stock rear end. No issues.

The machanic had popped the dif cover off to replace the seal - he said the gear(s) had the stamping on it inside.

I just had some work done on my jeep, my diff stamp say's I have 3.73 gears, mechanic say's the gears are 4.11 inside. Previous owner must have switched. I'm running 31" tires. According to an axle ratio/RPM chart I should be at 2800 RPM at 65 mph - but I'm at 2100 actually. I'm confused - any...

I just had some work done on my jeep, my diff stamp say's I have 3.73 gears, mechanic say's the gears are 4.11 inside. Previous owner must have switched. I'm running 31" tires. According to a gear/RPM chart I should be at 2800 RPM at 65 mph - but I'm at 2100 actually. I'm confused - any...

Thank's for the replies. Good to know others have the same numbers. I know MPG shouldn't keep Jeep owners up at night, I've just been wondering if this change I noticed was an indication of a performance issue - maybe, as mentioned once, - it might be the winter gas or additives they put in...

Thank's for the feedback, the 3.83 I found on a web site with jeep specs. I recently gave my brick a tune up plugs, wires, dist. cap, cleaned the K&N, drive it nice etc. I guess it's good as it's going to get. I thought about changing the O2 sensors

From what I've read, I have 3.83 gear ratio on my '99 4.0L. In the event my 31" tires are contributing to my questionable MPG, would going to 3.72 make a big difference?? Is it $$/difficult/possible??

My '99 TJ Sahara, 4.0L, is getting p-poor mileage. I just drove about 45mi (80km) on the first 1/4 tank. This is consistent. A couple of months ago I put on 31 BFG's (no lift) from 30's; recent tune up/oil change, K&N filter. It idles a little rough for a minute on a cold start, but other...

The jeep is '99 with 135000 km's, I've had it since 100000k's - I assume that they are original. Are these sensors something I can check/replace? What's a CEL?

No performance issues that I can notice, thanks for the filter info

Recently my '99 TJ 4.0l is not getting the milleage it had in the past. Very sudden drop. I've recently done a tune up - plugs,wires,dist. cap, air filter. No change evident. I've added some injector cleaner and next when my tank gets low enough I'll add some fuel system conditioner. Other...

Thank's for your help

Can anybody confirm if a 31" full size spare will fit at the spare tire mount? ('99 TJ)

Volaredon, do your wheels have spacer's or backspacing?

The 15 x 7 wheels are not factory, the 15 x 6 that are on now are factory though. The wheels I want don't come in 15 x 6, so I was wondering if there is anything I need to consider if I go to this new size.

My '99 TJ has 15" x 6" wheels. The new wheel's I want to put on are 15 x 7. I want to put on 31 x 10.5 BF's. The wheel's have an option to come with a 6mm backspace. Is this reqiured for this tire/wheel combo. I don't have a lift as yet, I plan to get a coil spacer/ levelling (2") installed...

Thank you ....I'll check those things

When I activate my right signal light, the front and rear passenger side lights blink rapidly. Also, the reverse lights blink in both the left and right rear signal's. The rapid blinking only happens when my headlights are on. If they are off the reverse light problem is still there, but not...