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funny thing is, i bought this car thinking: "well diesels of this age were so simple. they must have super simple electronics and can be repaired with communism..."
genuine, very expensive MAF. it was the first part i replaced.Seriously though was the Maf you fitted a cheap one or genuine? if cheap I would try a good one instead.
engine bay wiring loom is new.Of course, the other thing on cars this age that goes brittle is the wiring. So even if all the sensors are good the wire to it may not be.
only after pulling the MAF connector, did something change. aaand it just lost a bit of low end torque, and the turbo was responding a bit slower. although, now the "mpg gauge" went from 9.5l/100km to 10.5l/100km and i could feel like it definetly had just as much more power... only a bit.
genuine, very expensive MAF. it was the first part i replaced.
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no no, not better mpg. i said it was able to consume more fuel = more power when the problem was on. so kinda the opposite of better mpg. maybe i was unclear, so i'll recap.Might have been expensive but you must surely wonder why in your words you are getting better mpg and more power with it disconnected?
@mazappi Please let us know what is involved in putting the m57 in, I have heard it can be done but is not straight forward with the electrics, a how to guide would be even better
good luck with it.
bugger there was me hoping for another option on enginesnever mind .
Which Jag engine is that.Yeah, I'd love my Jag engine in there!
Which Jag engine is that.
If you are talking about a BMW, might be better off on a BMW forum rather than a Range Rover forum. The M51 engine may be similar but the FIP and ECU have differences and your car is nothing like the 2.1 or 2.2 you mention, the M51 in the Range Rover is 2.5 litre.Hi,
I know this thread is old but exactly describes my problem with BMW 525tds (same M51 engine). Its sad that this didn't get resolved. So I will add my experience for future searches.
First of all:
This problem is by 90% faulty fuel-pump
My engine has total of 400 000 km (~250 000 miles). I have older DDE, which is 2.1 (yours is 2.2, means that you had MAF). Mine is M51D25 1994 without MAF so that clearly puts it out of the list of interest.
I will recap what is happening to me:
I've already replaced many things such as: turbo, EGR valve, intercooler, all pressure hoses on intake, air temp sensor, control injector (4th injector with wire).
- When the engine is cold it does not have power until I rev it at least once over 3000 rpm (I do that only after the water gauge is over mid) or the engine is warm enough
- When driving with throttle in one position, mostly happens on 5th gear ~2500 rpm (120 km/h) the engine will "fall" into some Safe mode where it does not want to "eat" more than 10 l/100 km (as gauge on dashboard shows)
- Could be resolved either by holding long enough to pass cca 3000rpm OR lifting foot of the throttle, leave the econometer to drop to 0 l / 100 km and then re-apply throttle
I also cleaned the small filter-net on lift-pump, checked that the lift-pump is fully operational, added small one-way pump between fuel filter & pump.
Tried using some cheap DELPHI diag from eBay (which is mostly okay) and it shows exactly same errors as INPA trough original BMW service (so it is trustworthy) and it said some stuff about the control of injection start.
I was also told by some guy in TDS Facebook group that this behavior is typical for fuel-pump "safe-mode". I will try to replace the pump and then I will update my post accordingly.
If you are talking about a BMW, might be better off on a BMW forum rather than a Range Rover forum. The M51 engine may be similar but the FIP and ECU have differences and your car is nothing like the 2.1 or 2.2 you mention, the M51 in the Range Rover is 2.5 litre.