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Post by bolo1957 on Jun 11, 2023 11:45:48 GMT
im having trouble with my 2007 rav 4 d cat , it was losing power dramatically espeicially at traffic lights etc , as if it was in limp mode but no warning lights , it would then pick up and i found if i kept the revs up at stops i could get by . i decided to change the deisel fuel filter , this greatly improved things no more like limp mode but not full power at times espeicaly going up hills when over the hill it seems to kick start into action whithout increasing the throttle i can here a sucking noise and whoosh off she goes at vastly increased speed , any help would be most appreciated
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Post by bolo1957 on Jun 11, 2023 11:47:04 GMT
i have also used turbo cleaner and maf cleaner
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Post by davrav on Jun 11, 2023 12:03:05 GMT
Any evidence of air leaks in the hoses?
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Post by three5 on Jun 11, 2023 12:24:19 GMT
i have also used turbo cleaner and maf cleaner Do you do short(ish) journeys and do you use an additive with the fuel? |
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Post by bolo1957 on Jun 12, 2023 19:21:00 GMT
thanks for posting chris, yes i only do short trips 8 miles to work , i have used redex fuel system cleaner in the past but not regulary,i will have to look at the pipes but not sure which ones to look at, thanks again for your help
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Post by three5 on Jun 12, 2023 20:58:10 GMT
thanks for posting chris, yes i only do short trips 8 miles to work , i have used redex fuel system cleaner in the past but not regulary,i will have to look at the pipes but not sure which ones to look at, thanks again for your help Diesels don't like short journeys where they don't warm up properly. For 8 mile trips the EGR valve ( Exhaust Gas Recirculation ) is probably open for much of the time so there is likely to be a carbon build up in the inlet manifold and combustion chamber. I had similar symptoms where my 2008 model failed the MOT test on emissions one year. I took it to a local ( very good! ) diesel specialist and they cured it with an "Italian decoke". This involves working the engine fairly hard at 4-5000rpm. I'd be tempted to do the same to yours BUT before you do:
1) Change the oil and oil filter, check the air and fuel filters 2) remove and clean the EGR and the pipework as far as you can reach. I used carburettor cleaner to do mine. Check it is operating properly by plugging in the electrical connection and switching on the ignition, the valve should fully open. ( don't start the engine! )
3) fill it with some decent quality diesel ( NOT supermarket fuel ) and add some additive such as Millers Diesel Max
3) find yourself a decent hill a couple of miles long and, with the engine properly warmed up, drive it up the hill in 2nd or 3rd gear at 4-5000 rpm a sufficient number of time to get rid of any traces of black smoke from the exhaust
If that works, change the oil and filter TWICE a year, steer clear of supermarket fuel and use the Millers with every fill. Repeat the uphill runs periodically if there is any sign of smoke from the exhaust.
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Post by bolo1957 on Jun 14, 2023 14:14:10 GMT
thanks chris i will give that a go , thanks for your very informative post
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Post by bigkev on Jun 14, 2023 14:48:03 GMT
thanks chris i will give that a go , thanks for your very informative post Teached him all he knows. He might be extremely old and decrappit, but at least he listens. |
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Post by three5 on Jun 14, 2023 14:58:48 GMT
thanks chris i will give that a go , thanks for your very informative post Teached him all he knows. He might be extremely old and decrappit, but at least he listens. Hmmmmmm! That's probably the nearest I'll ever get to a compliment from you, you, you youngster!  Please can I have the bits back that our mutual friend removed from my car when I last saw him? |
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Post by bolo1957 on Jun 21, 2023 12:30:17 GMT
it failed mot on emissions test , as chris mentioned , they messed about with it to get it through , its running a bit better but still getting the sucking noise as it picks up , the garage mentioned yhere might be a problem with the intercooler ?
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Post by bolo1957 on Jun 30, 2023 10:39:41 GMT
had to put in a garage , they found a split pipe leading to the turbo , they are saying it proberly split as the dpf is blocked and putting pressure on it , its something they are not equipped to fix , the car is running ok at the moment , any advice /suggestions would be most appreciated
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Post by davrav on Jun 30, 2023 13:08:02 GMT
Get the DPF cleaned out?
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Post by bolo1957 on Jul 1, 2023 12:48:24 GMT
thanks davrav i had it cleaned about 2 years ago it cost me £280 , i have seen on Eb a brand new dpf from germany for £200 , is it as straight forward as just replacing it , its not somthing i could do but just trying to weigh up my options any advise would be most appreciated
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Post by bolo1957 on Jul 2, 2023 18:09:03 GMT
after further driving it still has the sucking noise on acceleration but responds a lot better
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Post by bolo1957 on Jul 15, 2023 18:59:35 GMT
not sure if its a sucking noise or a blowing noise
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Please can I have the bits back that our mutual friend removed from my car when I last saw him?