My CC is tempramental.

 

I can switch it on/off, but when I try to set it it will work the first time, but not again.

 

Is it likely to be the switches on my wheel or is it more likely to be the ECU?

Take the pump in engine bay to bits(abit fiddly) and give it a good clean.Sometimes the shaft sticks.

It could also be the switch on the back of the brake pedal or clutch pedal (if applicable).

These switches act as a cruise cancel for obvious reasons, but if slightly out of adjustment or faulty, they stop cruise from being set. You will still get one cruise light on when you press the pod button, but the 2nd cruise light only lights when set is successful.

Remember the brake pedal has 2 switches. The other is the actual brake light switch.

My cruise cancel switch was broken on the brake pedal and so it wouldn't set.

£35 for a new one, easy, but fiddly change, job sorted.

Aha! wouldn't have thought on that!

 

All the cars I've worked on with CC had a feed off one brake pedal switch.

 

Got loads to do tomorrow night!!

 

(Meant to do some stuff tonight but got sidetracked! :-/ )

The brake pedal light switch also cancels the cruise as a fail safe, but you would no if that one was faulty because your brake lights will be iffy.

If one just needs adjusting, sometimes you can tell by pulling the brake pedal upwards when at cruise speed to see if that sets.

Remember if manual car there is one on clutch pedal as well. I think they are in series.

 

Also did you know that CC only works between 30-68mph on Jap spec cars?? cos if not and you are trying to set outside that range nothing will happen.

I swapped my Jap spec CC ecu for a UK spec ecu to increase the range (30-105mph!)

 

Keep us posted and let us know when you've solved the problem. Its always nice to see a solution to peoples problems and helps future searches as well.

:)

Edited July 6, 201015 yr by turbocraigy

i got a cruise controll unit for sale in the for sale section any offers concidered? if u need one.

Interesting. Maybe that's it!! as I've been trying to set it over 70!! :headvswal

 

So would fitting uk clocks fix it or do I need to replace the ECU too?

 

YTS Weasel, pencil my name on that ECU, I'll let you know either way, thanks. :thumbup:

Also did you know that CC only works between 30-68mph on Jap spec cars?? cos if not and you are trying to set outside that range nothing will happen.

I swapped my Jap spec CC ecu for a UK spec ecu to increase the range (30-105mph!)

 

Yeah mine does that, but it will let you accelerate on the button to over 80 as I had it crusing at those speeds on Monday

So that's it then.

 

I had the CC working perfectly at 45 mph this lunchtime! :rolleyes:

 

So, will UK clocks fix it or do I still need the ECU?

So that's it then.

 

I had the CC working perfectly at 45 mph this lunchtime! :rolleyes:

 

So, will UK clocks fix it or do I still need the ECU?

 

Good question that! I don't know because I already fitted UK spec clocks before changing the ECU.

With just the UK clocks the range is still 30-68mph.

Maybe worth just swapping the ECU 1st because you can pick them up for around £15.

Only thing to watch out for is getting the right replacement box.

There are 2 types, a 89-92 Ecu & a 93+

One is a 16pin connection, the other is a 20pin connection, the latter is the later box.

 

UK clocks can sell for around £75-100!!

Edited July 7, 201015 yr by turbocraigy

I've got a set of clocks I just haven't got round to fitting yet.

 

Might take YTS up on his offer providing he's got the right unit.