EF accelerator/revs probs - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

back2thefutura · 08-01-2004, 03:39

2 things: (sorry if ive put this in the wrong section, you think id know by now

:)

My EF has issues with revs - it holds them for far too long both in driving (in D with econ mode), and also if i just gun it while its parked. If i hit the accelerator while its parked and rev it up, it falls back down to normal idle levels VERY slowly. Any suggestions as to what to check?

Next one - i think my accelerator cable may need replacing, as sometimes i can phsyically feel the accelerator pedal sorta 'click', and i can mash it to the floor and it'll still take ages to rev up. Basically what i need to know is how to remove the old cable and put the new one on. I'm assuming about $50-60 for a new one from Ford?

TIA :)

Troutman · 08-01-2004, 04:03

I'd say the accelerator prob would be the TPS. It's probably worth your while grabbing a cheap one from a wrecked EF-AU Falcon and seeing if it fixes it. They only cost about $25 from what I hear.

back2thefutura · 08-01-2004, 04:13

TPS = Throttle Position Sensor? Sorry, showing my ignorance here.

The cable itself is showing its age, all the plastic on it is cracked and just peeling off, so i would like to replace it soon anyway.
I've just gone outside, and given the cable a yank by hand just above the engine, and its made the pedal feel much stiffer to push down on. So i think by replacing the cable it might solve both problems.

As for the revs dropping as slow as they do, still a little unsure about that one?

Troutman · 08-01-2004, 04:17

Replacing the cable sounds good, but I can't give any advice there as I wasn't into DIY when I had mine done. The cable it self is around $66 from what I hear, or that might have been the price I paid including installation.

And yep you're on the money with TPS, if the slow rev dropping still happens I'd check it out. Actually I understand you can test them with a multimeter but someone who knows electronics would be able to explain it better...

XR6child · 08-01-2004, 06:27

The slow revving down I beleive is controlled by the Idle Speed Controller, which in turn is controlled by the ECU, (Correct me if i'm wrong), and the reason the ISC controls how slow the car revs down is to keep the car smooth revving.

I cant say I've ever heard of this problem BTF, or of an "Overactive" ISC. However once this happened to me while I was driving: I was fangin the the sheet outta the car and then all of a sudden found that when I put the clutch in, It decelerated back to idle REALLLY SLOOW, if at all.
I fixed it by resetting the ECU. Problem solved, so give that a go, worth a try.

Let us know how you go anyways

Oh and My accel cable is peeling as well, same as a couple of mates, and their cars are fine, so I'm reluctant to say that the cable is causing the deceleration problem. Anyways keep us informed BTF.

cheers,
-The Child

SileNceR · 08-01-2004, 06:33

cables are about $40 from ford.... TPS is the electronic reading for the throttle, which i gather controls, at least in an EF, the ECU's built in transmission computer? hence the over-revving if this is faulty...

the cable should be easy to put on, it snaps on to the pedal at one end (kinda, look at it and you'll understand) and the other end the spring sits inside the bracket and the other end of the cable sorta clips thru then has a metal stopper over it...

i had an MPI cable in my CFI and it was giving me troubles.... do you have the stock diff in the car, cos if its not the same as the car came with ratio wise this could cause the rev problems also... maybe even a transmission service might be needed...

Sundeep · 08-01-2004, 06:35

My EF has the same problem, you rev it and the revs stay up. I think it would probably be caused by the TPS or ISC. Unplug the ISC and manually muck around with ur idle until it steadies, then rev and see if it has the same problem.

Check my sig for specs of my new car. Picked it up for a song

Sundeep

galapogos01 · 08-01-2004, 16:45

Anyone thought of a vacum leak? try unplugging your PCV hose and watching the affect it has on the revs dropping.

Sundeep · 08-01-2004, 17:17

But with vacuum leak, it would just have a permanent high idle if you know what I mean.

Sundeep

back2thefutura · 08-01-2004, 21:02

Well some further testing today has decided that:

A new accelerator cable is in order. I think its pretty well stretched to buggery, simply because if i get a hold of it and yank it (from inside the engine bay), the accelerator pedal will become all stiff and harder to push down (how it's supposed to be), but as of late i can quite literally push it flat to the floor and not much will happen. So I think a new cable will fix that, as well as being a lot more attractive than the chipped, peeling, broken one that's there now.

So that's one thing on the to do list

.

I also reset the ECU overnight, took it for a drive again today, and it's doing the same thing, so that rules that out.

I'm reluctant to go messing with the ISC as to be honest i have no idea what to do to/with it, and the idle of the car is fine - it's only when its revving down that it takes far too long. But if someone wants to explain to me what im supposed to do and what to

, i'll give it a go and see how it all pans out.

Cheers, once again the E-Series guys are saving me $$$!