Vehicle & Technical > Discovery

Fast Reverse Problem

<< < (2/2)

Range Rover Blues:
What's more worrying is when this surging due to a faulty sensor causes someone to have a crash.

Thrasher:
..and it's so different to a sticky throttle cable how?

Range Rover Blues:
Well for one a sticky throttle cable never caused a vehicle to pick up speed on it's own........

Thrasher:
Um...it does. Try and press pedal .. get some resistance. Push a tad harder and WHAM!

I know this because I currently ahve half of Tixover on my plenum :s

Landyrover:

--- Quote from: "Jimbo" ---Might need to get someone to plug some diag kit into the truck to make sure all the electrics are working ok - I just blagged this off the DOC Tech site, you haven't had any clutch work done recently that might have let air get in the system ? The clutch switch mentioned below tells the ECU to drop the revs when the clutch is pushed down - if the switch fails (or gets air in it), maybe you'd get your problem.

"Clutch switch
The clutch switch is fitted only to vehicles equipped with a manual gearbox. The switch is an hydraulic pressure switch and is located next to the clutch master cylinder. When the clutch is engaged, i.e. pedal released, the switch will be in the open state. When the pedal is pushed and the clutch is disengaged, the switch will change to the closed state. The ECM will suspend cruise control operation in response to this change of state. The ECM will also reduce fuelling in response to this signal, to reduce engine surging (dampens the effects of fast throttle transitions to eliminate jerky vehicle movements). If the clutch switch fails at any time then the ECM will not support cruise control operation. In addition, the engine will be more susceptible to surging at times when the engine is decelerating quickly."
--- End quote ---


Thanks Jimbo, this sounds like it might well be the problem - I do also experience some slight jerkines when taking my foot off the gas completely - this might be the surging described in the last sentence of your post?

Re cruise control, I used this without prolem for 95% of the journey so don't know if this also might have a bearing on it?

I'll give R M Motors a ring on Monday and get it checked out...

Cheers,

Nick

Navigation

[0] Message Index

[*] Previous page