Jeep Quirk

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SFW516

NAXJA Forum User

Location

Anaheim, CA

• Mar 31, 2009

• #1

I got a 90 Jeep and one little thing I've kind of wondered about it is its acceleration. It accelerates like no other car I've driven. Through like 80% of the throttle it doesn't change much but when you get down to the last part it goes into this super acceleration and jerks and lunges forward. Anyone know why?

Just one of those curiosity questions I have, probably a dumb one.

 

bluejeepkid

NAXJA Forum User

Location

Bullhead City

• Mar 31, 2009

• #2

you are prolly talkin about when the tranny downshifts and into a lower gear...thats the lunge you feel. most likely anyways

 

joe_peters

NAXJA Forum User

Location

Grants Pass, OryGun

• Mar 31, 2009

• #3

Engine/transmission/tire size/gearing?

 

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winterbeater

NAXJA Forum User

Location

Royal Oak, Michigan

• Mar 31, 2009

• #4

The mighty 4.0! And there are those who want even more. Strokers, turbos, and even airaid filter systems.

 

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birchlakeXJ

NAXJA Forum User

Location

Melrose, MN

• Mar 31, 2009

• #5

You must have the "factory nitrous" option......

Seriously, without feeling it, hard to say if it's normal or not. The only thing that comes to mind to check would be to test AND adjust the throttle position sensor to ensure you have a nice smooth sweep of acceleration.

 

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SFW516

NAXJA Forum User

Location

Anaheim, CA

• Mar 31, 2009

• #6

Yeah its just the way its always been. Just replaced the TPS so don't think that could be it. Must be just a transmission thing.

 

Johnnie Walker

Piece of Fish!

NAXJA Member

Location

WA state

• Apr 1, 2009

• #7

Your TV cable could be out of adj.

 

joe_peters

NAXJA Forum User

Location

Grants Pass, OryGun

• Apr 1, 2009

• #8

After replacing the TPS and adjusting it to the correct values did you test it through the complete range of the throttle using the mandatory analog multimeter?