cruiser54

Comfort mode sucks and saves no gas. That's why the factory eliminated the switch.

Do the ground refreshing and C101 cleaning since you have an 88.

Never hurts to do the trans plug refreshing along with the general connector refreshing under the hood.

And remember, the "trans" side of your TPS could be bad. It's totally independent of the "engine" side. Do the other stuff first though.

XJ_will

I did pull apart every single connection port and clean them, the big one by the fire wall had yellowish stuff in it. Wasn't black and nasty like some have I assume that's good.

cruiser54

Good to know.

xjmercenary90

Didn't have a chance this weekend to refresh grounds. Had to install wake tower on the boat. As far as my comfort/power switch I don't think it's working it lights up when in power but there is no change in shifting or anything else. Is it subtle??

cruiser54

It's not subtle. I would bypass the switch into Power mode. Anybody have a write-up for that?

Oh wait. I do.

Bypassing the Power/Comfort Switch

Remove and unplug the switch. In the harness are 3 wires One has a stripe, one is tan, and the other black. Make a 4" jumper wire with a male spade at each end. Plug one end in the cavity for the tan wire and the other in the cavity for the striped wire and you'll be in permanent Power mode. Stuff the harness back in and reinstall the switch for looks.

XJ_will

When I use that power switch it makes my jeep run like a Viper, little depression on the gas pedal and she is gone. Comfort mode makes me feel like its asleep when driving. What is the best mode to drive in? I do think with the higher shift points and more power that the power mode is made for racing (lol) but probably not. Comfort mode is for granny footing it right?

cruiser54

OK. The factory defaulted to Power mode and eliminated the switch in late 91. That tell you something? Comfort mode is Grandma mode and does nothing to help fuel mileage. If it did, they woulda kept it.

Many times the 7.5 amp "trans" fuse is blown in the fusebox and the dang trans will be stuck in Grandma/Comfort mode. You also won't have reverse lights...

The switches are prone to failure so I just bypass them so I have Power mode all the time.
Bypassing the Power/Comfort Switch

Remove and unplug the switch. In the harness are 3 wires One has a stripe, one is tan, and the other black. Make a 4" jumper wire with a male spade at each end. Plug one end in the cavity for the tan wire and the other in the cavity for the striped wire and you'll be in permanent Power mode. Stuff the harness back in and reinstall the switch for looks.


Always a good idea to do this:

Click on the "pink link" in my signature and view post # 10.

xjmercenary90

ok I finally got time to redo my grounds and that seems to have fixed the shifting problem. I replaced battery to block with a 1/0 awg and added another block to chassis with a 4 awg and added a battery to chassis 8 awg. also replaced my starter wire with a 4 awg and alternator wire with an 8 awg. cleaned all grounding points to bare metal and de greased all other terminals I didn't replace. I also added some new battery terminals, went with nickel coated raptors w/ digital voltage indicator (the toggle switch is to turn off voltage indicator..

cruiser54

Well, imagine that!! Good job.

xjmercenary90

lol thanks a lot for the help your threads are very informational

cruiser54

Alot of it is stuff I learned from my buddies at JeepTech when I was Service Manager/Shop Foreman at a Jeep dealership. We documented all their little tips and tricks. Still have the tattered little spiral bound notebook to this day.

Success stories such as yours reinforce the need to do the basics and address known issues before throwing cubic dollars at unneeded parts.

XJ_will

Cruisers brain is a must have for jeep owners. I prefer power mode any day I don't like the feeling of having to put my foot half way into to get to 70 on the highway.

cruiser54

If it was my brain, we'd be screwed. LOL. That's why I write it all down!!!!