High idle and loss of power.. Suggestions?

[Harvey]

An oiled filter WILL knacker a MAF over time. Definitely worth cleaning on a regular basis.

THIS is the stuff you need. LeeT5 recommends it. If it is good enough for him, it is good enough for me!

Are you still having MAF problems,did say about this stuff a little while back did you get some back then ?,if so did it make any difference to it.

http://www.vpcuk.org/forums/showthread.php?47845-Maf

[silverhorse]

Are you still having MAF problems,did say about this stuff a little while back did you get some back then ?,if so did it make any difference to it.

http://www.vpcuk.org/forums/showthread.php?47845-Maf

New Bosch MAF a while ago. Still did not like performance air filter. Standard filter and car works fine. VIDA gives me a Yellow DTC of ECM-120D (MAF Signal too low). On rollers car gave 259.8bhp with standard filter. Live VIDA reading gives an air flow of 9.2kg/h, which is too low. I suspect I have a slight air leak om the intake somewhere, but I'm buggered if I know where to look.
I need a weekend to investigate as I want to get the car 100% for a remap.

[pillapow]

Having burst my crossover pipe to turbo rubber coupling last week, i trimmed it slightly as a temp fix, hear hissing today and thought it had split again, took it apart and it was ok.

Decided to remove the two sensors in the etm to intercooler pipe while i was in the mood, the boost pressure sensor and the air intake temp sensor, (could be incorrect) - One was really gunked up, removed a bit of grit from it and replaced, fired car up, could hear like a tapping noise from the area of the sensors, couldnt pinpoint it, removed both sensor connecting plugs whilst car running slight judder when doing so, and replaced them.

Instantly as soon as i hit 4000rpm in 2nd gear i had to smile, like a rollercoaster ride going down the first drop, lol.

It certainly had its kick back but it sort of fizzled out after a few miles, right now it pulls real smooth, no cutting boost anymore, no kangeroo'ing, but that real hard kick i got earlier on had gone somewhat.

If i clean all these sensors with the electrical contact cleaner, hopefully it will be even better!

Whilst im waiting on the bits to arrive, i have a greddy boost gauge to fit, just need some vacuum piping, two tyres and a wheel bearing and hopefully, the car will be without fault. Happy Easter

[M-R-P]

Haha sounds like some good news at last

I have a spare boost pressure sensor here if you want it.

[pillapow]

Im going to clean all the sensors and replace the vacuum lines first, see what happens then, can i spray contact cleaner into the map sensor or should i not do that lol ?! Thanks MRP.

[M-R-P]

I put my map (boost pressure sensor if anybody's wondering) in the sonic bath along with a set of fuel injectors. Worked a treat.

[stribo]

Good to see you may be making progress.

[pillapow]

Thanks stribo, just watched a video of what an ultra sonic bath can do, wouldnt mind one of those!

[M-R-P]

Thanks stribo, just watched a video of what an ultra sonic bath can do, wouldnt mind one of those!

Handy bit of kit.

The right selection of chemicals is important tho, use the wrong stuff and you're in trouble lol.

[siamblue]

One of the best mods i did to the engine was to run a oil trap and capture all of the moisture and oil from the intake system.
It won't hurt the map or the barometric sensors,but be careful of the maf,they are real fragile .

[pillapow]

Cleaned MAF twice, AIT & MAP sensors. Seems livelier but still kangerooing at full boost, 5th gear 3-4krpm.

Unsure what to do next asides from getting it plugged in.. Anything anyone can reccomend? I've definitely improved the running in some areas, I know that.

All vacuum pipes to be replaced weekend also!

[pillapow]

Managed to plumb the boost gauge in, good job i bought 5m of vacuum hose, had about a foot left!

Replaced all 3 pipes from TCV, havent had it on the motorway yet to monitor boost levels (this is where they are most erratic)

2nd and 3rd gear pull nice though, not 100% but around 1.2-1.3 bar.

Dont know what to check next? LOL.

[LeeT5]

i hope you remember which hose comes from where? The oe hoses are colour coded. If you have to remove them for any reason it will be very easy to forget which hose goes to which nipple on the TCV.

Mine looks like this:

[pillapow]

Hey, thats a beauty, yes, ive had em off that many times i think im fairly familiarised with it now. Doubt they will be touched again now anyway, I have ruled those pipes out well and truly.

Since fitting the boost gauge, boost needle is erratic (flickering) till after about 5000rpm then its rock steady just below 1.2 bar.

From 2000rpm to 5000 rpm, its erratic and kangeroo'ing.

Cant get my head round it, dont want to spend all kinds of money taking it to a specialist etc and what not. I'd rather just sell it and get an old 850 t5.

I am a tight arse when it comes to handing paper over to garages but i knew this type of problem could arise when buying an ME7 motor, i suppose its my own fault.

[LeeT5]

Where do you live?

[stribo]

What age is the car?

[pillapow]

Where do you live?

Im in the northwest.

[pillapow]

What age is the car?

2001 (X reg)

[pillapow]

Took a trip down to the coast lastnight, outside temp was 9-10 degrees, car steady boost @ 1.3bar upto 120mph.

Pulls hard in all gears, idles 850-900rpm -

I think its down to the cooler air.

Any suggestions?

[silverhorse]

upto 120mph.


Any suggestions?

Yes. Slow down!