MAF on 2.0 HDI (2006)

Mixerfistit · 2024-01-22 03:45:47

Van has felt a bit sluggish over the last few months (also seems to grumble if revs are below 1800 in 5th) and the MAF was off Ebay so I unplugged it and now, although it's a little flat on the lower revs, it almost feels like a v-tech when the revs pick up and takes off. Feels like there's a lot more power on the upper end now.

What I didn't expect though, was no engine light when I disconnected the MAF. I'm almost certain that when I broke my old MAF with a fat finger and disconnected it, I got the performance but also had the light.

Am I misremembering from a different vehicle? or is the engine light supposed to be coming on with the MAF disconnected?

Once again, I'm looking for problems where there may not be any, but I am curious. Haven't tried Lexia yet, but no codes on a basic scantool either (except for egr which is errr...expected..)

JohnDragonMan · 2024-01-22 22:32:38

hmm yeah it should throw an EML.
im running a cheap Ebay MAF sensor, its been on my van now for 3 years and its been good.

i think the EML does take a few cycles of the ignition to come on. no doubt it will be a "pending" code.

the software in the HDI ecus is great. it literally lets you get away with murder as far as sensor faults go. the worst thing is the EML coming up. i dont think they have a "limp" mode and if they do, well ive not managed to put mine in it yet and ive had every sensor unplugged bar the fuel rail, crank, and cam sensors. it still gave me somewhat full power

Casper · 2024-01-22 23:19:43

No way to fool the MAF sensor. I put a cone filter in my Maxus and the light has been on ever since. Age yet before the MOT is due but i would rather not have the light on if i could.

Mixerfistit · 2024-01-26 15:19:37

Yeah, it is odd, my reader does show pending codes normally too and although it's not PSA specific like my diagbox it should definitely show MAF codes.
Oh well, it's currently off the road due to excessive play in steering rack so I'm not going to bother MOTing it until I can afford to tip money in to it.
I've just picked up a cheap C8 in need of some TLC but it's fitted with leather seats, front 2 rotate so should be able to get most of the money back with breaking/scrap if that doesn't make it through it's own MOT in a few months. From what I can tell, the C8 front seats could fit the mk1 dispatch too

JohnDragonMan · 2024-01-27 18:19:01

ohh cushy. leather in a dispatch! i thought i was good with aircon!

one thing to note, if the van is older than 2008, the engine management light can be lit and it will still pass the MOT.

Mixerfistit · 2024-01-28 01:31:03

The C8 seems to be driving great. The only "engine" issues I've found that are now rectified, a noisy pulley on the aux belt. It didn't spin freely so soaked in WD40 and will do until I get a replacement. The other issue, I had on the dispatch too - a hot solenoid on the turbo vacuum line. So I've done the same thing I did there (and I believe you've done similar John), swapped the bad turbo solenoid with the good egr and then instead of blocking the tubes this time, just pulled the connector as it blocks when off. The big thing is both jack points on the off side have crumbled to what resembles dry weetabix. The rest of the underbody seems OK though.
Seriously considering pursuing getting the C8 through an MOT as it runs and drives so well and there's just enough electrical faults to hold my attention!
What to do with the dispatch though. Doesn't seem enough wrong to bin IT (steering rack and a trailing arm bush), engine solid, lower arms and droplinks are new, one trailing arm bush already done, one needs doing, 2kw heater installed, alloys, filters less than a year old, recently fixed the infamous leaking fuel pump with a kit. 170 on the clock but actual is about 30k less as I swapped the instrument cluster. It's an ugly, rough looking ex oddjob man van but it's a tank lol

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#1 2024-01-22 03:45:47

MAF on 2.0 HDI (2006)

#2 2024-01-22 22:32:38

Re: MAF on 2.0 HDI (2006)

#3 2024-01-22 23:19:43

Re: MAF on 2.0 HDI (2006)

#4 2024-01-26 15:19:37

Re: MAF on 2.0 HDI (2006)

#5 2024-01-27 18:19:01

Re: MAF on 2.0 HDI (2006)

#6 2024-01-28 01:31:03

Re: MAF on 2.0 HDI (2006)

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