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Author Topic: cherokee 2.5td vm engine lack of boost help  (Read 28867 times)

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Bubba

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Re: cherokee 2.5td vm engine lack of boost help
« Reply #25 on: March 31, 2010, 11:10:49 AM »
yes the bush has been truly beaten to death a few times its cool as a cleaner seems certain. gives a smidge of mpg to petrols and diesels  but is this down to its cleaning properties

but like bio fuels be careful with later engines
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tim_aka_tim

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Re: cherokee 2.5td vm engine lack of boost help
« Reply #26 on: March 31, 2010, 07:23:12 PM »
Just re-read your post, and you'll be wanting more than 10cc per tank. Standard guidance is
between 2 and 3 oz per 10 US gallon, which is approx 100ml, or 100cc for an XJ.
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GREGBLACK

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Re: cherokee 2.5td vm engine lack of boost help
« Reply #27 on: March 31, 2010, 08:04:38 PM »
Hi yes of course it should be 100ml  that is the recommended dose, I think its time to leave the whisky alone or I will be wanting to try that as well it will smell like a distillery (mmmmm. Bowmore Islay malt)
Cheers Greg
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Dutch

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Re: cherokee 2.5td vm engine lack of boost help
« Reply #28 on: March 31, 2010, 08:11:03 PM »
Quote from: gregblack on March 31, 2010, 08:04:38 PM
(mmmmm. Bowmore Islay malt)

Mmmmm.....got a bottle of Caol Ila for me B'day.... :icon_winkle:
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Fizz

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Re: cherokee 2.5td vm engine lack of boost help
« Reply #29 on: December 04, 2010, 02:10:33 PM »
I've had the same problem today, it was fine this morning and now hits a wall at about 2K. I have had a quick check over of the hoses and all seems ok. I didi have the water in fuel come on this morning so I drained the filter and since then it's not been fight... Could it be the injector has now got debry in it??

where do I get acetone from?
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brian reid

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Re: cherokee 2.5td vm engine lack of boost help
« Reply #30 on: December 12, 2010, 01:11:38 AM »
did you get to the bottom of this,i had the exact same problem,changed out the  fuel filter and she ran fine after ....i had ran the tank down low and pulled sludge into the filter,you could see this withe the eye as a light brown grease at the top end of the filter...

the acitone trick works well for me

regards
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Fizz

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Re: cherokee 2.5td vm engine lack of boost help
« Reply #31 on: January 14, 2011, 07:20:59 AM »
still no luck.... turbo, intercooler, egr valve, no 1 injector, tank, fuel filter all changed.. costing me loads... anyone know a decent diesel specialist near kidderminster..
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The Smiths

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Re: cherokee 2.5td vm engine lack of boost help
« Reply #32 on: January 14, 2011, 10:19:58 AM »
find a Bosch specialist - they will be able to scan engine management - but have you reset the ECU?
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Bubba

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Re: cherokee 2.5td vm engine lack of boost help
« Reply #33 on: January 14, 2011, 10:36:13 PM »
mike gosling recovery service lisle avenue kiddy is or was a bosch specialist
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Tank

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Re: cherokee 2.5td vm engine lack of boost help
« Reply #34 on: January 14, 2011, 10:56:44 PM »
Quote from: tim_aka_tim on March 26, 2010, 05:45:50 PM
Forget the injector cleaner, it'll take forever. Tip 100ml of pure acetone in the tank.

Not always advisable,as i found out,i had similar problems to this after i stuck acetone in my Shogun.I was on the way to Nottingham,and couldnt get over around 2000 revs.I thought turbo had gone,got the RAC out,he didnt really do anything,just agreed probably the turbo and i got recovered home,anyway for some reason i took off the fuel filter drain plug and nothing came out,so it turned out all it was was a blocked fuel filter,it was full of some wierd hair like stuff like you get collecting in the bath plug hole,changed the filter,ran great,job done
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Nosebolt

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Re: cherokee 2.5td vm engine lack of boost help
« Reply #35 on: January 14, 2011, 10:59:09 PM »
killer gerbils in the fuel tank?
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Tank

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Re: cherokee 2.5td vm engine lack of boost help
« Reply #36 on: January 14, 2011, 11:47:31 PM »
Yep,i reckon
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Fizz

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Re: cherokee 2.5td vm engine lack of boost help
« Reply #37 on: January 15, 2011, 10:08:19 PM »
i dunno if they have. you would have thought a jeep specialist would do and know to do that and possibly check ecu codes...
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Freitas

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Re: cherokee 2.5td vm engine lack of boost help
« Reply #38 on: February 19, 2011, 08:24:14 PM »
Hello!

Sorry i'm so late, but maybe i can still help! Your problem is most probably the MAP sensor. In fact i bet it is!

Best,

F
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kato

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Re: cherokee 2.5td vm engine lack of boost help
« Reply #39 on: February 20, 2011, 06:37:08 PM »
number 1 injector sensor, unplug the sensor check the resistance across it, should be around 100 ohms
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Fizz

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Re: cherokee 2.5td vm engine lack of boost help
« Reply #40 on: February 25, 2011, 05:06:55 PM »
thanks for all your help peeps... it was.... the injector pump...
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vmkrister

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Re: cherokee 2.5td vm engine lack of boost help
« Reply #41 on: December 30, 2013, 10:02:06 PM »
Quote from: Dave69 on March 27, 2010, 12:13:04 PM
no point trying to add addatives or change ecu chips etc to gain more power for this make of engine. keep it std for reliability. If you think the No.1 injector has a problem it should thorw up a check engine light. the other thing is to measure the resistance across the connector pins (ohms), I can't fully remember but if the resistance is higher than 110ohms then it will flag an error. I fooled mine by putting a resistor in line but be aware that the wires do go brittle over time. Another option is to take the injectors out and get them cleaned. A diesel specialist should charge too much plus they will check the "pop" pressure so that they can see if they are all operating the same. The No.1 has the flying lead so the socket needs to have a hole in the side (make your own) but be careful not to allow the socket to slip as it will cut the wire in two

The resistance should be 90 OHM. If there is no resistance the "limp home mode" cuts in and the engine does not run over 2000 rpm. There is no mechanical fault with the injector.
VMKrister
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