? engine intermittant loss of power

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GingerMagic
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Location: Bournemouth

Re: ? engine intermittant loss of power

Post by GingerMagic »

Cool.

It's common for the MAP sensor to get a little dirty - some oil vapour blows through the intercooler when driving, it can after a while block the tiny pipe or the sensor on the top.
This is fairly normal, and the oil vapour burns up in the engine anyway.

A leaking intercooler is also common, usually the bottom corner - shouldn't be an issue unless you can see air bubbles coming out.
1999 T4 family wagon
2005 Vauxhall Meriva
1998 406 V6 Coupe - Midlife crisis..!
PP2000 user, can help with faults / diagnostics in the Bournemouth area.

johntl
2.0 16v
Posts: 189
Joined: Fri Sep 24, 2010 7:38 pm
Location: cleveland , england

Re: ? engine intermittant loss of power

Post by johntl »

the intercooler has been getting worse for about 2 yrs ?
there is air bubbling out at the bottom !! :frown:
they are about £70 + on e-bay, been trying to find one a bit cheaper!

johntl
2.0 16v
Posts: 189
Joined: Fri Sep 24, 2010 7:38 pm
Location: cleveland , england

Re: ? engine intermittant loss of power

Post by johntl »

I've sealed the crack in the intercooler and fitted an other air pressure sensor, disconnected the maf sensor for a while , but the same!
noticed when it happens , if I pump the throttle the power slowly comes back :frown:

GingerMagic
3.0 24v
Posts: 3310
Joined: Fri Apr 06, 2012 9:02 pm
Location: Bournemouth

Re: ? engine intermittant loss of power

Post by GingerMagic »

Hmm.
Okay, that eliminates a few things...

I'm curious about the throttle sensor, maybe the loss of power is a sticking throttle position sensor, so if it sticks in the 1/4 power position then that's all you'll get..

RWB had a reoccurring fault with his, which he resolved by cleaning it out - there should be a guide on how to do it here somewhere, it's one of the easier jobs to do.

viewtopic.php?f=1&t=19303&p=191872&hili ... or#p191872
1999 T4 family wagon
2005 Vauxhall Meriva
1998 406 V6 Coupe - Midlife crisis..!
PP2000 user, can help with faults / diagnostics in the Bournemouth area.

johntl
2.0 16v
Posts: 189
Joined: Fri Sep 24, 2010 7:38 pm
Location: cleveland , england

Re: ? engine intermittant loss of power

Post by johntl »

just a thought :
seen a thread that suggested the high pressure fuel regulator could be the problem ? :frown:

GingerMagic
3.0 24v
Posts: 3310
Joined: Fri Apr 06, 2012 9:02 pm
Location: Bournemouth

Re: ? engine intermittant loss of power

Post by GingerMagic »

It's possible.

Sometimes all they need is new O rings, but I don't believe they are too expensive to buy - depends on your budget I guess.

Easy enough to replace, but as always don't be heavy handed as these are a bit more delicate.

Have you tried cleaning your throttle sensor?
1999 T4 family wagon
2005 Vauxhall Meriva
1998 406 V6 Coupe - Midlife crisis..!
PP2000 user, can help with faults / diagnostics in the Bournemouth area.

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