Slipping transmission.

#1 by Fergus , Fri Jun 14, 2019 10:02 pm

My 2018 auto gearbox runs 500-1000 revs higher when the accelerator is depressed even slightly. As soon as I lift off the revs drop before the speed changes at all.
The dealer has had it in for a total of 16 weeks over the last 8 months and seem to be incapable of understaanding what the problem is.
Mitsubishi have told them to fit a new gearbox but the dealer insists it does not need one.
Am I correct in saying this is a definite sign of a slipping transmission?


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Date registered 10.13.2018


RE: Slipping transmission.

#2 by Tek76 , Sat Jun 15, 2019 10:15 am

Had a similar situation with a polo a few years ago. Had to boot the problem up to VW uk who forced the dealer to buy the 100k of diagnostics to prove that VW knew better than the dealer. You might want to try a similar approach. Also, take a look at the recall list and known faults of that era, if there's something similar then that just gives you a leg up. Dealer's just trying to be a dick for the costs involved. How close is an alternate dealership?


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RE: Slipping transmission.

#3 by Fergus , Sat Jun 15, 2019 8:41 pm

Thank you. other dealers are quite near, but in my experience car dealers are all stupid.


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RE: Slipping transmission.

#4 by Fergus , Sat Jun 15, 2019 8:41 pm

Mitsubishi say they leave it up to the dealer.


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Date registered 10.13.2018

Last edited 06.15.2019 | Top

RE: Slipping transmission.

#5 by 123hotchef , Sat Jun 15, 2019 11:07 pm

just take it back leave it there get a courtesy vechile until it is fixed!


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RE: Slipping transmission.

#6 by Fergus , Sun Jun 16, 2019 7:13 pm

I did that. 16 weeks later I got it back in exactly the same condition.


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Date registered 10.13.2018


RE: Slipping transmission.

#7 by Fergus , Sat Jun 22, 2019 5:39 pm

No experts here then?


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RE: Slipping transmission.

#8 by mikeinatruck , Sat Jun 22, 2019 5:58 pm

Have you/they done a stall test? You put it into each gear manually, foot on brake and press throttle to the floor, revs will go up to a certain point and thats it, too high or too low and you have a problem. I'll find the rpm hang on..


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RE: Slipping transmission.

#9 by mikeinatruck , Sat Jun 22, 2019 6:01 pm

Not sure about 2018, but earlier models were all 2200 to 2700 rpm.


2011 Warrior (Big Red)
265 70 17 BFGs
EGR delete
Thats about it for now.....

RIP - 2003 Oriental burgundy and silver. (curse you evil Corsa driver)


Range Rover Vogue and a Land Rover 90 V8 Tray Back for fun.


 
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RE: Slipping transmission.

#10 by Fergus , Tue Jun 25, 2019 11:03 pm

Quote: mikeinatruck wrote in post #8
Have you/they done a stall test? You put it into each gear manually, foot on brake and press throttle to the floor, revs will go up to a certain point and thats it, too high or too low and you have a problem. I'll find the rpm hang on..


Thaank you. Do I do this when stationary?


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Posts: 7
Date registered 10.13.2018


   

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