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Post by nic513 on Jul 2, 2008 15:53:06 GMT 11
My 2.8ltr Auto MU has recently started to use alot more fuel and has significantly lost power especially on the highway and towing. When ever i come to a slight incline on the motorway it loses speed from about 110 to about 85-90 and revs its tits off.
I used to get about 770 out of 68lts and now im barely getting 690 out of 68lts..
I have had the Truck for 2 years and have a K&N Air filter, Top Mount, running 15PSI, EGR's removed and plugged for about 1 yr. 2 weeks ago i had a 2.5" Mandrel Bent turbo back exhaust fitted however it didnt seem to make any difference at all.
Its not blowing any black smoke or using any oil etc. Have replaced fuel filter and do oil and filter changes every 5000kms.
i have tried to illiminate everything but still no luck.. Does anyone have any ideas?
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Post by geeves on Jul 2, 2008 16:04:32 GMT 11
sounds like the auto
check the fluid level according to the manual and also check the colour of the fluid. It should be a bright pinkish red not dark red or worse brown.
otherwise binding brakes but that would also show other symptoms
where are you?
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Post by nic513 on Jul 2, 2008 16:21:00 GMT 11
Ok will check the auto fluid. I had the auto serviced about 20000kms ago.
I am located Brissy Australia
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Post by wayne85 on Jul 2, 2008 19:51:25 GMT 11
I use to have a similar problem many years ago when i owned a VL Commodore. In the vl it turned out the bands in the gearbox were slipping. I dont know if the MU gearboxes work in the same way but it may be worth looking into
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Post by geeves on Jul 2, 2008 20:59:17 GMT 11
clutches not bands in both the comadoor and Mu The principle is the same though. Either way its a 2 credit card job
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Post by muvit madness on Jul 2, 2008 21:03:11 GMT 11
What about the pump & injectors?, When were they last serviced also the tappets (valve clearances) may need to be adjusted. Just a thought.... But irraspective of that i'm lucky to get 500 outta my shmoo  regards muvit  |
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drift
Isuzu Baby
Posts: 31
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Post by drift on Jul 3, 2008 5:44:31 GMT 11
I had this and it turned out to be a couple of sticky brake calipers, well worth checking the pistons and regreasing the sliders  |
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Post by nic513 on Jul 3, 2008 9:34:12 GMT 11
I had this and it turned out to be a couple of sticky brake calipers, well worth checking the pistons and regreasing the sliders I wish this was the case however i have just replaced all pads serviced all calipers replaced booster and master cylinder etc... off the to auto repair shop it seems.. |
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Post by geeves on Jul 3, 2008 10:09:50 GMT 11
Still worth jacking up each wheel in turn and giveing them a spin to be sure. If you have a lsd you need to lift both back wheels. A lot cheaper than an auto rebuild
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Post by nic513 on Jul 3, 2008 12:59:32 GMT 11
Did the test... rear seems to be tight.. spins but takes alot of force..
Got my mate to bring his MU around and his is alot easier. His is manual, however both being in neutral shouldnt make a difference.
Time to pull off the rear tires and investigate the brakes..
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Post by geeves on Jul 3, 2008 16:56:45 GMT 11
if you have lsd that is a normal result.Try it with both wheels off the ground
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Post by nic513 on Jul 4, 2008 15:38:32 GMT 11
if you have lsd that is a normal result.Try it with both wheels off the ground Yeah that was with both the wheels off the ground.. the passenger side rear seems to be tight.. |
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