Nah. 15w40 will lead to harder starts when its colder than a witch's tit out there but ECT will rise just as it always has. If anything the ECT might rise faster as there's a lot more parasitic loss due to the thicker oil and your oil pressure might take longer to settle down. But that's pretty much academic lol

 

Ok, I had too much cognac I think cause that sounded foreign to me lol

 

It is foreign. They won't let me into your country because I have too much facial hair and they can't identify the poutine in the front seat.

ECT = Engine Coolant Temperature lol

 

Well the new thermostat definitely helped. I guess your right. Because it will sit at 100° and then jump to 170° and continue.

 

Lol I know :P. my in laws for some good cognac and some cream whiskey. Looks like the jeep is staying parked in jersey tonight

 

So I had a quick question though, I have a 1999 jeep cherokee sport took it off roading in some deep water and out in the field with mud, but when I was done at first the check engine light was on but nothing happened then the volt gauge dropped very low, it was driveable though, go home turned it off and turned it back on the volts went up, let it sit over night then started it in the morning and reved it up high and it went back to normal, but now it will idle rough and it will have to give itself gas to stay alive sometimes, I'll drive down the road and it will bog down and then I'll give it more gas and it will jump back up, I thought it was an o2 sensor the diagnostics said it was and replaced both, but it still idles really rough but it is better than what it was, any ideas what it could be?

 

So what codes did you get?

Chances are your alternator is packed full of mud and your TPS is still wet.

 

I got that it was my bank 1 sensor 1 was running too rich and the check engine light turned off after I replaced the o2 sensor, I was thinking that or I need to replace the coil packs or check the IAC

 

You know, I'm curious. Can a newer style np231 run without a rear driveshaft and not lose TC fluid since it has the outer seal?????

Edit: oh I have an 01 aw4

 

Coil packs??

Test the TPS. It's used by the PCM for almost everything. Better yet, take it out of the Jeep and let it dry on the bench before testing it. You might find that it's shot.

Yep

 

Good cause I think I'm gonna be a FWD vehicle for a month until after Christmas when I can finally do an SYE. Tired of hearing the grinding.

 

When I said coil packs I meant like ignition coils and alright man thanks I'll tell you if that works or not, but thanks for the help!

 

FWD jeep club!

 

Best radiator for the money? 99 XJ. mines leaking like a champ. haha.

 

Is there a max speed the TC can't go passed with just the front DS hooked up. I mean I know it can't bind since the rear driveshaft is off