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[Harleyfatboy]

Hi All

I hope someone can give me some advise

96 Grand Cherokee 4.0 petrol on LPG

Car has run great for the past few years but all of a sudden i have lost the kickdown It still picks up mid range  but when i floor the pedal .... nothing ... i have tried to adjust the throttle valve (TV) cable to the gearbox a several notches either way but it has made no difference.

I have checked the fluid levels, & all terminations

Is there anything else in the system that  is linked to the kickdown. eg TPS ... or is it just the TV cable

It also seems to be a lot thirstier, i did a 5oo mile round trip & seemed to get 11mpg

I asked my local jeep dealer if i could chat over the phone to a mechanic just to ask a question but i was told it was not policy, but they would ring back ...they never did

Has anyone had a similar problem?

[Bishops Finger]

Yes.... my dealers shit....

Could be an iffy O2 sensor as well??

[Mike Pavelin]

Does it feel like it's stuck in 3rd gear. If there is an electrical fault in the transmission it will default to 3rd and revers till it's fixed. The most common failure is the governor pressure sensor.

[Harleyfatboy]

Thanks I cant say i have noticed it stuck in 3rd ...but ill check

Is there a way to read the fault codes, i heard you can do it somehow using the climate control switches, and will they tell me where the problem is.

Finally ...is there anywhere that could be reccomended in the north west (I am reluctant to take it to the Jeep dealer as he has been of no help)

Thanks for the help guys