What is Bump Shift? Do I have it??

Rosko · Jan 24, 2003

Please read all .... there may be some details in here.

Details: 95 Dodge Intrepid 3.3Liter 85,000 Miles. All Service done by Dealer.

Symptoms: Car seems to hestitate when getting up to speed 0 to 40 MPH. At 40 MPH the car starts to Jerk, Bump, Hestitate. I give it gas...seems ok, But if I try to level off anywhere between 40 to 60MPH the Jerk/Bump/Hestation Returns.

History:
1st Battery replaced (the above did not occur before battery replaced)
2nd Symptoms above arrive...in dealer for 2 days, can't find problem, thinks its ignition coil, ok repair, charge $276 for Ignition Coil and spark plugs regapped (fuel fouled??).
3rd Still have problem take back to dealer. Mention fuel rail because cousin had problem in their '93 with the fuel rail. They say fuel rail ok but all 6 Fuel Injectors bad. OK replacement of all 6 Fuel Injectors. They have car for 11 days Charged $606
Still have problem!!
4th Service Manager calls and says that he still thinks its a fuel issue not a TCM issue. That if a TCM issue will cost around $700. They are willing to look at it again by dropping the tank, cleaning fuel lines, fuel pump and replace fuel filter. No Charge (they are so nice) sarcastic.

Still have Problem.

In talking to the Techs before talking to Service Manager they said they cannot Flash/Update my version of the TCM. He also said they cannot replace it. In talking to Service Manager he does not say they cannot replace but that TCM Service would cost almost $700 and they want to make sure its not a fuel problem 1st...evidently not a fuel problem.

My Questions:

Is this the infamous bump shift?
Is my TCM Flash/Upgradable (they say its a 1st Gen??)?
Cost of TSM Replace and complete Trans Fluid and Filter replace?
Is there a TSB on this, which one, could someone send me the TSB?

Rosko
Rosko@mindspring.com

ChicagoTRS · Jan 24, 2003

I am far from an engine expert but I kind of doubt if it is the TCM. Not aware of the bump shift issue you describe...maybe one of the first gen guys can help you out with some info.

Sounds like this dealership is doing a lot of guessing and in the mean time it is costing you a lot of money. Might think about taking it somewhere else. With the money you have spent so far you are almost to the point where you should have just totalled the car and looked for a new one.

jcman311 · Jan 24, 2003

From what I recall and have (still have to get it fixed) bump shift is when you are coming to a stop and you physically feel a hard downshift or bump into neutral. It can also be somewhat delayed causing hesitation in acceleration from a stop. Bump shift, I believe, does not have to do with shifting at higher speeds. Also, if you have ever been in a 1st or 2nd gen dodge minivan, you can feel the same downshift as in these trannys. That is what I believe we call the "bump shift"

Wardruid · Jan 24, 2003

i have the imfamous bump shift in my car and thats not it from what i have experianced.

how ever i have had this problem on a rare ocassion and the thing was it was a half quart low on the tranny fluid for some reason and i have very regular check ups all the time. so they are rippiing you off, take to a tranny shop and referance this.

THIS IS A MUST READ FOR ALL DODGE OWNERS!

http://www.allpar.com/fix/trans.html

Warlord187 · Jan 25, 2003

Bump shift is when you are in an orgy and someone yells "SHIFT!"

Intrepid SHO · Jan 26, 2003

this might be totally wrong,,, but i thik he is referring to the
Auto Stick

argus · Jan 26, 2003

jcman311 said:
From what I recall and have (still have to get it fixed) bump shift is when you are coming to a stop and you physically feel a hard downshift or bump into neutral. It can also be somewhat delayed causing hesitation in acceleration from a stop. Bump shift, I believe, does not have to do with shifting at higher speeds. Also, if you have ever been in a 1st or 2nd gen dodge minivan, you can feel the same downshift as in these trannys. That is what I believe we call the "bump shift"

Yep.

Btw Rosko, if what you're describing is converter clutch shudder, then that's usually symptoms of an incorrect tranny fluid level or type.

Any chance someone may have put the wrong type of tranny fluid in your car?

What is Bump Shift? Do I have it??

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