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Topic: Autobox (Read 852 times) |
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Scorpio_Mike
Senior Member
Jeep Grand Cherokee 3.0 V6 & 2.8 Sierra XR4i 4x4
Posts: 2354
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Noticed over the past few days the autobox seems a bit reluctant to kick down when the accelerator is floored. It drops down one gear but no more and going up a long hill does not pull like it used to.
Does not seem to do it all the time though.
I cleaned the MAF quite recently.
Car has done 133k and gear changes are smooth.
Any ideas ?
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Star sign is Scorpio !
Sierra XR4i's are great...especially when fitted with 4WD 
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Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
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Re: Autobox
« Reply #2 on: Aug 20th, 2008, 10:05am » |
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Before suspecting the autobox, check that the throttle cable hasn't stretched causing the throttle not to open fully when floored.
Get someone to floor it (engine off) & check the gap between the throttle plastic quadrant & the throttle body stop. It should be close but not quite touching. If the gap is too big then adjust the cable one notch at a time until it's closer to the stop.
This made a hell of a lot of difference to my autobox gear changes & acceleration
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Dave2302
Senior Member
2006 Mercedes S55 AMG, Retired Barefoot Waterskier
Posts: 1119
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Re: Autobox
« Reply #3 on: Aug 21st, 2008, 6:05pm » |
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2.9 12v and 2.3 are totally different transmissions, the control systems are completely different 
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Dave "The 'ol Bear" ex Footer !
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Scorpio_Mike
Senior Member
Jeep Grand Cherokee 3.0 V6 & 2.8 Sierra XR4i 4x4
Posts: 2354
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Re: Autobox
« Reply #4 on: Oct 7th, 2008, 2:42pm » |
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Rather embarrassing - I think the floormat had worked its way up behind the accelerator pedal and was stopping it going right down to the floor 
All fine now.
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Star sign is Scorpio !
Sierra XR4i's are great...especially when fitted with 4WD
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Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
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Re: Autobox
« Reply #5 on: Oct 7th, 2008, 3:08pm » |
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 ....... doh !! ....... 
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Moonchalk
Full Member
2.3 Facelift Ultima Born: Jan 98 Restored: 2023
Posts: 162
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Re: Autobox
« Reply #6 on: Nov 3rd, 2008, 8:50pm » |
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Your not alone.
Every Scorp I've ever bought (5), the previous owners have always had a drivers front floor mat.
Every Scorp I've ever OWNED has had the mat thrown away for exactly this reason !
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gozz
Senior Member
Been around awhile
Posts: 3475
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Re: Autobox
« Reply #7 on: Nov 3rd, 2008, 10:23pm » |
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Moonchalk.
Quite right too,bloody dangerous things in my opinion !
GOZZ.
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Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
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Re: Autobox
« Reply #8 on: Nov 4th, 2008, 9:02am » |
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My facelift doesn't have this feature, but my wifes pre-facelift does......2 retaining clips in the carpet (just in front of the seat) that go through the mat & holds it in place.
Does anyone else have these ?
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