gazelle Posted August 12, 2009 Share Posted August 12, 2009 Hi all, It is about a month since the truck last had an outing. I left it with the T-box in neutral whilst I was away. On starting and putting it back to high (no diff lock) the difflock light came on and stayed on. On pulling away (well pulling does not cover it) the acceleration was awful (0 to 30 in about 25 secs!) and sustainable top speed was down about 10mph. After about 15mins on coming off a dual carriageway I noticed that the difflock light had gone out. I also noticed that I had some acceleration back. Same happened today; drove 10 mins with the truck in high (no difflock) sluggishly, the light goes out and eventually some power returns. Is this liklely to be a) Fueling issues b) brake sticking issues c) something to do with the difflock d) I have got too used to fast cars in the interim! There are no odd noises, no clunks, no other telling features Cheers Martin Quote Link to comment Share on other sites More sharing options...
NicTheOrange90 Posted August 12, 2009 Share Posted August 12, 2009 Lift up driver seat pad, open lid and take plug from red ECU, see if it has any oil contamination ? Quote Link to comment Share on other sites More sharing options...
gazelle Posted August 12, 2009 Author Share Posted August 12, 2009 Lift up driver seat pad, open lid and take plug from red ECU, see if it has any oil contamination ? Thanks Nic, will do in the morning when I get a chance. Martin Quote Link to comment Share on other sites More sharing options...
gazelle Posted August 12, 2009 Author Share Posted August 12, 2009 Curiosity got the better of me. No oil visible in the plug or the wiring. Martin Quote Link to comment Share on other sites More sharing options...
NicTheOrange90 Posted August 13, 2009 Share Posted August 13, 2009 Perhaps its items C and or D in your list then... Quote Link to comment Share on other sites More sharing options...
gazelle Posted August 13, 2009 Author Share Posted August 13, 2009 Took it London Gosport return today, and the speed is back, the acceleration is back. This may be down to an Italian Tune up done at one point, but that may be co-incidence. The one thing noticed today was the heat coming from under the body. When I stopped for fuel, you could feel the heat coming out of the rear wheel arch! The transmission box was warmer than I remember too. Even after 30 miles of town driving it was hot - could this be the transmission brake sticking? Martin Quote Link to comment Share on other sites More sharing options...
NicTheOrange90 Posted August 14, 2009 Share Posted August 14, 2009 Is it due for a service ? Im sure an hour spent changing all filters and oils and lubing UJ's would allow you/someone time to have a look at the vehicle as a whole, and with all wheels off the ground [on a ramp, not Dukes of Hazzard style] I think you could see if there was any rolling resistance. Also see you have a passion for the water, was it left in Surrey or near the coast when you gaive it a month off ? (wondering if salt ingress has anything to do with your initial problems?) Quote Link to comment Share on other sites More sharing options...
gazelle Posted August 14, 2009 Author Share Posted August 14, 2009 A service was carried out by a local garage/MOT station in London (Not LR specialist) about 4/5 weeks ago, just before I left it to sit whilst I was away. The truck was left in Surrey for the duration. Martin Quote Link to comment Share on other sites More sharing options...
NicTheOrange90 Posted August 14, 2009 Share Posted August 14, 2009 Do you have any way of jacking the rear end up to listen for / check brake binding ? Now that its got over its sulk, has teh difflock light come on again ? Quote Link to comment Share on other sites More sharing options...
gazelle Posted August 14, 2009 Author Share Posted August 14, 2009 Now that its got over its sulk, has the difflock light come on again ? Sulk probably describes it quite well!!!! Diff light is now off, and has stayed off. I can lift the rear end temporarily with the bottle jack and high lift, but I think it may be time to invest in axle stands if I am going in underneath!! Quote Link to comment Share on other sites More sharing options...
gazelle Posted August 18, 2009 Author Share Posted August 18, 2009 Is it normal for the T-box to heat up significantly more than the items around it (e.g. 48 deg C rather than 31 at the rear diff)? Quote Link to comment Share on other sites More sharing options...
gazelle Posted August 26, 2009 Author Share Posted August 26, 2009 Progress: Checked so far: Fuel filter changed Lifted back end on axle stands - the prop shaft moves easily with no major friction with transmission brake off. Lifted front end on axle stands - the prop shaft moves easily with no major friction. Checked and greased UJs Put injector cleaner into the fuel tank and run till low - refilled, and put in fuel system cleaner. ECU plug checked - no oil at plug as yet. I have just replaced the air filter as well, but have not run it since. I have also noticed that the inside of the exhaust is black and sooty. - Black indicating not enough air? The loss of power is mainly at high load - e.g. she will only do 60 up hills on motorways! or when starting from cold. So Fuel in checked and cleaned, Air in replaced, any other ideas folks? Martin Quote Link to comment Share on other sites More sharing options...
gazelle Posted August 27, 2009 Author Share Posted August 27, 2009 Good news, Airfilter change seems to have sorted it. A blast through London and up the M1, and the power has returned. Martin Quote Link to comment Share on other sites More sharing options...
gazelle Posted September 1, 2009 Author Share Posted September 1, 2009 Fitting the air filter must have helped the problem temporarily. Next unpluged the MAF - and the power returned. Fitting new MAF tomorrow. Cheers Martin Quote Link to comment Share on other sites More sharing options...
gazelle Posted September 7, 2009 Author Share Posted September 7, 2009 Sorted - The MAF replacement has restored power back to normal. Tested on a 550 mile round trip to Fishguard! Martin Quote Link to comment Share on other sites More sharing options...
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