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MG MGF Technical - Accelerator 'stuck'
I have just got in my car this morning an its well icey so dont know if thats got anything to do with it but the accelerator pedal is stiff as as a board.
It cant be pushed in and it didnt want to overly force it.
Any idead what this might be????
|ice on the throttle body?|
(stick a hairdryer in the engine compartment for 15 mins)
I dont have an extension lead so wont be able to get it to the car. Guess I'll just have to wait till the day warms up. (skyver!)
|While your there...|
does the car start? (if so a coupe of minutes running should melt any ice!)
If it is ice in or on the throttle then if you open the boot and look into the engine bay you should see a wheel with the cable running over it (pulling the cable turns the wheel) if you can't turn this then I was right, if it moves freely but the accelerator doesn't then the cable itself is at fault, it might not have been greased and water might have go in, if this has happened then you really need to do something about it or it is a matter of time before the inner corrodes to the outer or the wire rots thru.
yes it does start
when i look in the engine bay where do i look for the wheel. on the left side?
what size is it roughly.
|OK in the TF|
if you have a F ignore the braces,
If you have a MPi (rather than VVC) then the throttle (alloy in pic) is black plastic
Cable entering on right
Wheel in centre (really a cam) which the cable core runs around
right. ive run the engine for a few mins and its warm. still no movement on the pedal.
just looked in the engine (its a vvc but the throttle is black not alloy...is this normal?)
and there is a fair amount of slack in the cable but when i pull it the wheel does not turn??
|can you turn the cam by hand, if so has the cable come off the cam?|
sorry. i can turn the cam by pulling the cable near the cam. and yes i can turn the cam by hand.
from the cam as far as i can see the cable it is not taught and has a fair amount of slack.
|Ben, mine's a VVC and throtle body is black plastic. They were all like that untill the Trophy, I think.|
|Can you see if the cable is sitting in the grove in the cam?|
if not it should be
If it is, can you get someone to push the pedal and see if the slack is taken up?
if no movement then sized cable
are you sure about the first question?
|pretty sure the cable was in the grove|
the pedal does not move at all...not more than half a centimeter.
Is this bad????
really appreciate all your help.
|unfortunatly sounds like a siezed cable, if you are lucky then the cable has ice in it and is not badly damaged, it will thaw and then you can use lots of WD 40 to flush out the water, then let it dry and use thick grease to lock out any future moisture. If you are unlucky then it's a replacement throttle cable. This shouldn't be too expensive (it should be a cheap part) but I have not replaced one myself and don't know where it runs...|
i'll let you know if it thaws out later.
|Ben, Dieters site has some details of the throttle body that reinforce what Will has been getting you to check.|
http://www.mgfcar.de/index.htm and then run down the index to DROSSELKLAPPE (it does have English as well).
just popped outside and its now working again. full movement in the pedal so it must have been iced up somewhere.
Will. You said about wd40 ing and then greasing the cable. where abouts should i do this??? in the boot where the cable is or elsewhere.
Thanks everso much mate.
Your best bet for cable lubing is to visit a motorcycle shop (or possibly Halfords) and buy a 'cable oiler'. The one I have is a small alloy block that clamps around the cable outer. I then attach the plastic straw from an aerosol can of lubricant (again a motorcycle shop) and squirt until it comes out of the other end. It has worked on bike cables for years.
I have just scanned the 3 workshop manual pages that cover the throttle cable and show how it routes from the pedal, along the door sill and eventually through the rear bulkhead and on to the throttle body.
If I were lubing this, I would squirt from the engine bay and stop when it comes out near the pedal.
If you want jpg pages give me an email address.
|That sounds like a cool device John, never saw one when I worked for Halfords, so I guess a bike shop is the best bet.|
|Having initial thoughts about publishing piccies and instructions and the renting it out to BBS members. If I get enough takers I could be looking at up(down?)grading to a TF before the year is out.|
Or I could let people know that it is only about 6 squids to buy and put off the TF until 2004.
This thread was discussed on 18/02/2003
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