I drive a 94 jeep cherokee se. It's a 4.0 automatic but the throttle position sensor is gone bad so I un-plugged the TCU and the jumping and jerking went away so I know that's what it was.

How should I be shifting and when exactly?
From a start I start in 1st then between 15 mph-20 mph I can hear it Rev up so I shift to 3rd. At 45 mph I shift to drive. It seems to be okay and running good BUT what about when slowing down or going up hills at lower speeds? I just do not want to screw up my transmission until I fix it. I know one guy on here said he drove his this way for 4 months no problem. So any tips would be appreciated.

 

Rule of thumb is anywhere from 1700-2100 RPM.

 

Mine has the dash that doesn't show RPM's but I can hear when it needs to change starting off. I'm more concerned about slowing down.

For example; if I'm cruising at 45mph in 4th and am coming to a stop sign (braking or letting off gas) do I need to pull the lever down into 3rd at 30mph and 1st when I get to 15mph or is it okay to stop then pull it back into 1st, then start off again?

 

Don't shift like Manuel. Just shift like yourself!

 

Just realized I mis-spelled it. Dang auto correct. Haha

 

You would always want to work your way down. I don't know the speeds. Everyone's are going to be different because of different tire and gear setups. That's why you have to go by RPM.

With the AW4, unless you do some kind of shift-tronic mod, the transmission is going to auto shift you down anyways. I'm not sure how you would distinguish between gear 1 and 2 since the first shift is labeled "1-2," even with the TCU disconnected. Never done it.

 

Put a TPS in it.

 

^What he said^ No reason in the world not to do so!

 

^ This. Why would you want to potentially burn up a transmission over what is ~ a $65 part? It does not logically follow that just because you disconnected the TCU and the symptoms disappeared that it means that is the problem. Test the TPS and if that is out of spec buy the OEM one from somewhere. I would strongly encourage you to not even waste the money on aftermarket ones. You're just throwing good money after bad.

 

Well I'm going to do that but I will not have the money until the end of this week and its my daily driver. I have nothing else to drive so I'm stuck like this until then and I was just trying to get any tips to make sure I didn't hurt transmission. I definitely don't want to drive this way.

 

Understood.

 

 

when i bought my jeep, the tps was bad, the previous owner told me i had to shift manually. so i did this for a few years cause he also told me it was the tcu. after a couple tcu's and inline fuses, it didn't correct it, so i swapped out the trans. still did it, till i read a post on here that it was the tps. i didn't believe it, so i had to try it with a used one from a parts jeep. haven't looked back since.

so yeah, it's possible to shift manually for as long as you need to.
but for me, it seemed to have lost second gear, so i had to rev it out a bit more then shift to 3rd. no need to down shift.

 

@XJwonders- ALOL.. That was great.

 

indeed. Thanks to salad. Ha