Hi,
I need some advise and assistance with my cruise control disengaging intermittently - I have seen this post (https://www.4x4community.co.za/forum/sh ... se+control ) but my symptons are similar but different.....
Here is the background
Driving on the Warmbaths road towards PTA, which is relatively flat with very little hills, and towing a trailer which was around 600kg, with a full Pajero with 4 people for a few days camping, I had cruise control engaged and it disengaged around 4 times on this stretch at a speed of around 110 - 120Km/h, the Gearbox was working between 4th and 5th quite a bit more on this trip with a head and side wind and the cruise control disengaged around 4 times on the +- 100km.
Yesterday on the same route at 120Km/h without trailer, packed for a chalet weekend (just food, drinks and clothes) with the cruise control set, it disengaged more than 15 times on the same 100Km/h with less weight and less wind and less gearing between 4th and 5th, eventually I switched it off and drove without the cruise control.
Has anybody else experienced this, as I understand it, the heavier trip should have disengaged more than the lighter trip on the same stretch of road as it would have required more throttle input.
And the CC disengaging is a real pain in the ...... in any event, usually happens after gearing down on a hill, not on flat stretches of road
Any assistance would be greatly appreciated.
Thanks
David
Hi David
Just a question about when this happens. I had a similar problem in December towing my caravan from Cape Town. Every time I used the right indicator it desengaged on the trip dowm. There was a short on the wiring in the coupling and when I indicated, it disengaged the CC. Sorted after i sorted out the wirirng.
My 2 c worth
Just a question about when this happens. I had a similar problem in December towing my caravan from Cape Town. Every time I used the right indicator it desengaged on the trip dowm. There was a short on the wiring in the coupling and when I indicated, it disengaged the CC. Sorted after i sorted out the wirirng.
My 2 c worth
Yes I have also experienced this when towing my Echo Chobe with CC set to about 110 kph going up an incline. I accepted that as "per design". If you read this article by 4EPAJERO you will find that it follows exactly what 4E is recommending. Never give more throttle than what the car can utilize to produce more power.
https://www.pajeroclub.co.za/forum/view ... =24&t=2896
I agree that it is a pain in the backside because by the time you realize it has switched out you have lost so much speed that you have to change down anyway. At least this way you can self control EGT.
https://www.pajeroclub.co.za/forum/view ... =24&t=2896
I agree that it is a pain in the backside because by the time you realize it has switched out you have lost so much speed that you have to change down anyway. At least this way you can self control EGT.
Willie from Jo'burg
White Gen 3 SWB Pajero 3.2 DID
White Gen 3 SWB Pajero 3.2 DID
Thanks Guys,
My issue was more with the lighter load more than the heavier when towing my trailer and it was 400% worse and the petrol input to maintain should have been minimal in comparison, and I was just staying in 1 lane most of the time so no indicators.
Just very weird, any suggestions welcome on this one.
My issue was more with the lighter load more than the heavier when towing my trailer and it was 400% worse and the petrol input to maintain should have been minimal in comparison, and I was just staying in 1 lane most of the time so no indicators.
Just very weird, any suggestions welcome on this one.
David,
My opinion as per the attached thread still stands.
1)When you disengage the c/c - does the car behave and perform normal? In other words you are happy with the power and gear selection of the car.
2)If 1) above is yes: Then we have to assume that the c/c doesn't allow enough oomph to keep you going. We also have to assume that the problem is getting progressively worse, based on your experience on the second trip.
A test I would suggest is to set the cruise at say 100 - disengage and drop your speed to 50 and engage again. The car should drop a gear and accelerate at a good pace - if not, then you can be assured that the c/c isn't allowing enough throttle response to push the car forward.
I have no idea how the c/c actually operates, but hopefully somebody on this forum can help you there. I have a Haynes at home and will check tonight if I can get any insight on how the thing operates. If a vacuum hose is present at all in the system, I would immediately suspect that.
Regards
Roelf
My opinion as per the attached thread still stands.
1)When you disengage the c/c - does the car behave and perform normal? In other words you are happy with the power and gear selection of the car.
2)If 1) above is yes: Then we have to assume that the c/c doesn't allow enough oomph to keep you going. We also have to assume that the problem is getting progressively worse, based on your experience on the second trip.
A test I would suggest is to set the cruise at say 100 - disengage and drop your speed to 50 and engage again. The car should drop a gear and accelerate at a good pace - if not, then you can be assured that the c/c isn't allowing enough throttle response to push the car forward.
I have no idea how the c/c actually operates, but hopefully somebody on this forum can help you there. I have a Haynes at home and will check tonight if I can get any insight on how the thing operates. If a vacuum hose is present at all in the system, I would immediately suspect that.
Regards
Roelf
Thanks Roelf,
Will definately give it a bash, still weird as the throttle response on the trailer is more and alot more gear changes too when towing, will play and see what's up with the CC and fedback.
Will definately give it a bash, still weird as the throttle response on the trailer is more and alot more gear changes too when towing, will play and see what's up with the CC and fedback.
No sure if this helps at all...
But a mechanic at Mitsubishi told me that there are valves in the intake that can give problems, and the tell tail sign is normally problems with the cruiser control.
But a mechanic at Mitsubishi told me that there are valves in the intake that can give problems, and the tell tail sign is normally problems with the cruiser control.
2008 Pajero DiDc LWB GLS
2005 Pajero DiD SWB GLS (sold)
2005 Pajero DiD SWB GLS (sold)
Just my 2c's here. I do not use the speed control at all when towing. I believe it slows down your reaction time in a event of emergency. You can actually test it yourself by doing a emergency stop without the control and then sitting in your normal position when you drive with it on and do the same emergency procedure measured from the same spot and you will be amased by how much further you actually come to a stop. Make sure you do this on a remote road preferably with assistance to warn you of oncoming vehicles.
David,
Here is what Haynes says:
Roelf
Here is what Haynes says:
Hope this helps.The cruise control system maintains speed with a vacuum actuated servo motor located in the engine compartment, which is connected to the throttle linkage by a cable. The system consists of the electronic control module, brake switch, control switches, a relay, the vehicle speed sensor and associated wiring.
Roelf
Just an update, have done 200km heavily loaded on tar road stretch, no trailer with lots of hills not mountains and the cc behaved itself, but I disengaged alot due to several trucks and heavyish traffic, but never disengaged once on its own. Suspect the vacuum and will check out what is up there.
The throttle response appears fine and can return from around 60kmh to 110 with no issue, I know that on some steep hills and the throttle input is too large it does disengage and do see this as normal, based on a few other threads on this topic. It appears to be flar road and long engage time where my problem occurs.
Thx for the input here.
Cheers
David
The throttle response appears fine and can return from around 60kmh to 110 with no issue, I know that on some steep hills and the throttle input is too large it does disengage and do see this as normal, based on a few other threads on this topic. It appears to be flar road and long engage time where my problem occurs.
Thx for the input here.
Cheers
David