My Mitsubishi challenger and my brother in laws challenger as well when subjected heavy climbing when towing ,on some Occassions will jamb in second gear lymp mode,it can be annoying.I don't hnow much about scan gauges but have a feeling that they may have a use for monitoring this problem? Is that true? If so are they a simple fit Iam handy mechanically...
They are very simple to fit, simply plug into the car's OBBDI(sp) Port which is usually located around the steering column area.
Reading the manual you can find the cause of the Check Engine light (assuming it comes on when it goes into Limp Mode) and you can google the code it will show what has triggered it.
Going by the actions when it is triggered a good guess would be the auto trans is overheating. Allowing it to cool allows normal driving?
Solution? A Transmission cooler! You can buy one for around the price of a scangauge
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Neil & Lynne
Pinjarra
Western Australia
MY23.5 Ford Wildtrak V6 Dual Cab / 21' Silverline 21-65.3
There used to be a problem with Mitsubishi's Pajero manual gear box - there is a gate on top of box for each gear to slide into - If there has been work done on the gearbox or the selector removed most mechanics will fit the spherical gate upside down - it will work in most cases but sometimes there is a phantom gate on second gear - the simple fix turn over the gate.
I don't know about Challengers but it could be a similar problem.
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I'd go with the transmission cooler recommendation as well - I overheated the transmission in my Territory by towing in Drive instead of 3rd which put me straight into limp mode going up the Toowoomba range. About $300 for the cooler and fittings plus easy to fit.
I have a NW Pajero diesel (manual transmission) and occasionally tow my 16.5 ft Jayco caravan. I have read somewhere that I should tow in 4WD H (not centre diff locked), so I switched from 2WD to 4WDH. After 50 km or so, all green 4WD lights went out, and the centre diff light in the centre of the display came on, flashing. I stopped and shut down the engine, all cleared but after 5 km or so, same thing happened, so I went back to 2WD and no problems except that the rear wheels do all the work when towing up a steep hill. I have had this happen 5 times now. I have mentioned this to the Mits dealer but they reckon they have never heard of this before.
I have a Scangauge II, but it showed no codes when these events happened, so I assume that the Scangauge only monitors engine functions. I know that it is possible to input special codes to read auto transmission temperatures, so maybe it is possible to monitor the manual transmission temperatures (IF there is a temperature sensor in the gearbox).
As said above, I have a Scangauge, and find it really good to monitor engine and inlet air temperatures, voltage and most importantly, turbo boost. However, you can buy an Ultragauge from the USA, and I believe this is better than the Scangauge. The main advantage is that it has a larger screen, and more importantly it has an audible alarm function. Costwise, I think they are both about the same money.
As for monitoring the manual transmissions, I cannot see how any OBDII can do this. I have never had my Pajero go into limp mode, and cannot see any reason for it to do so unless something in the engine dept was overheating on the long, steep climbs. Certainly not the gearbox causing limp mode (unless it is an automatic, in which case all sorts of parameters can shut the engine down to limp mode).
-- Edited by erad on Friday 29th of December 2017 08:39:02 PM
Sorry Ron, I wrongly assumed you had an auto trans.
I don't think any manual transmissions in generic cars have a temperature sender that the scangauge could access anyway.
I have actually never heard of a manual trans overheating enough to cause a problem.
Back in my box now.
Don't be sorry delta your correct the car is an auto limp mode locks the auto tranny in second gear, the wagon already has a good sized cooler fitted as stock the main problem Iam haveing at the moment is my misses won't let me buy another car
They are very simple to fit, simply plug into the car's OBBDI(sp) Port which is usually located around the steering column area.
Reading the manual you can find the cause of the Check Engine light (assuming it comes on when it goes into Limp Mode) and you can google the code it will show what has triggered it.
Going by the actions when it is triggered a good guess would be the auto trans is overheating. Allowing it to cool allows normal driving?
Solution? A Transmission cooler! You can buy one for around the price of a scangauge
Yeah Iam not sure its a temperature problem you only have to stop for a minute and turn the ignition back on and everything is ok..
When my transmission overheated and went into limp mode, it went away after I turned the engine off and after a few minutes switched ignition back on - trans overheat indicator was gone so I'd presume it senses oil temp at the end of the oil line just before it enters the cooler and is sensing a "momentary" overheat.
It can be as simple as a cam or crank sensor playing up ? When you turn key off and on it reboots itself .. check ignition at night ? Look under bonnet with engine running . Check for glowing or sparks jumping ?? 3rd gear is where the load, torque is on engine .. Where any issues appear !! Fuel filter etc ok ??
It can be as simple as a cam or crank sensor playing up ? When you turn key off and on it reboots itself .. check ignition at night ? Look under bonnet with engine running . Check for glowing or sparks jumping ?? 3rd gear is where the load, torque is on engine .. Where any issues appear !! Fuel filter etc ok ??
The filters are always changed early Ak I think its just a challenger problem my Brother in laws car does the same thing.
Thats why I was thinking of haveing something to measure tranny oil temp fitted,that might give an idea of whether leaving it in auto or using it manually when under heavy load has any effect.
Thanks Denis
-- Edited by Ron-D on Sunday 31st of December 2017 10:42:28 AM
SNIP~~~ That's why I was thinking of having something to measure tranny oil temp fitted,that might give an idea of whether leaving it in auto or using it manually when under heavy load has any effect.
Thanks Denis
Gday...
If you mean using the auto in 'manual' mode for heavy loads when climbing hills, then I would definitely suggest you do that.
Many (most?) manufacturers advise using 'sports mode' for towing (check your owner's manual) but when it comes to lugging up a long hill, I always use the 'manual' mode ... and then use the tacho to keep the revs in the 2,500>3,000RPM range ... using down/up changes to maintain that rev range.
I couldn't give a rats wrinkle on what KPH that is ... I prefer to ensure the motor/transmission is having as a good a time as me.
Letting it get down too low in the rev range will overheat the best set up vehicles - particularly autos.
When in Drive, and often in Sports, the box will hold gears too long and let revs drop ... result = overheating tranny.
Goes the same for on the flat too I reckon. Keep the motor spinning in its high/highest torque range (mine is 1,900RM to 2,3,00RPM). If the box doesn't shift to keep it there then drop it out of Drive into Sport .. if it doesn't do that then think about manual.
Although, if I assume your vehicle is a 'modern' model - eg 2013 or newer - then it should have a good transmission pooter that reads the load pretty well for the flat and slight inclines and provides the optimum gear.
Cheers - John
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( Thats why I was thinking of having something to measure tranny oil temp fitted,that might give an idea of whether leaving it in auto or using it manually when under heavy load has any effect. )
As John said, do not tow in auto. You will overheat the torque converter.
Tow in the highest manual gear you have. ie in a 5 speed auto use 4th gear.
I think leavening it in auto is ok on the flat stuff, I used to drive in fourth but its more economical in drive auto and ticks over very smoothly,The gearbox seems to change down ok going up hills ,never seems to labour but I might take over manually on the really steep stuff to avoid it changing down too often ,as I said previously I think its just a fact the challenger gearbox is not really up to scratch for heavy towing.
