2003 Peugeot 307 SW HDi 110

My recently acquired 307 lacks power. Everything happens in the first half inch or so of accelerator pedal movement. Pressing it beyond that has little effect.

The local garage has just changed the timing belt at 95000 miles. I had them check for fault codes but they found nothing wrong. They reckon that the turbo isn't spinning and advised me to take it to a Peugeot dealer, something I'm reluctant to do, given the way they charge!

I've checked the air flow sensor which is working normally. Are there any other sensors I should look at before biting the bullet? If so can anyone suggest where I can find the normal sensor readings?

Thanks in advance

Richard

Reply to
Richard Swaby
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Was the car playing up before you took it in to them??? if not it is up to them to put the fault right as it has gone wrong while it was under there care.(as tradeing standards would love to deal with this one .)

Reply to
Chris

Unfortuneately yes it was. I just5 got them to run a diagnostic check whilst they did the timing belt change.

Reply to
Richard Swaby

They dont seam to be much of a garage, if they cant do more than a timing belt ,most of us garages can do all work on cars or vans,as we have all the Mechanics trained to do any thing which comes in .i think they dont what too know,

Reply to
Chris

This may sound silly, but have you checked the throttle cable? After some work was done on my 406 the cable had been left badly adjusted and gave much the sort of effect you are describing. Only took five minutes to put it back to its normal lively self.

Reply to
Keith Willcocks

No, it's not that. In fact there's no cable, just a potentiometer on the pedal.

Incidentally I've just checked the mpg. Less than 40. Rubbish really! My old 405 diesel would easily return 50 without me driving carefully.

Reply to
Richard Swaby

Well you know what to do then sale it and get a 405 again??

Reply to
Chris

If this thing doesn't shape up that's exactly what I'll do!

That old 405 had 195000 miles on the clock when I got rid of it. I put

100000 miles on it in 5 years with no engine problems at all. I finished up running it on 30% cooking oil which stopped it smoking completely. It was by far the most reliable car I ever owned.

Ahh they don't make 'em like that nowadays.

Reply to
Richard Swaby

I once had an 1989 205D (1.7Diesel, no turbo) I bought it with 75000 on the clock, my wife and I both drove it for several years until it had 283000 miles on it and I eventually sold it to a work mate. The last I heard it had over 300,000 on the clock. The engine has never been touched (apart from cam-belts and water pumps etc) Just change the oil+filter every 5000 miles and *never* let it run low on water or overheat because the head gaskets are a little weak.

Regards Julian.

Reply to
Julian

Please, please! You're all making me feel terrible for losing that

405.

I've got an awful feeling that this new thing is going to be a load of trouble.

Reply to
Richard Swaby

Oh, I forgot, it always returned almost exactly 60mpg and was remarkably sprightly even though it didn't have a turbo!

Julian.

Reply to
Julian

I got a old 405 with over 265000 on the clock. all i have done to it is give it oil changes and filters changes,every 4th month and it has never let me down. even when it was standing around for 1 week when i went off to egypt in november last year, mind you it is a diesel.iam very very happy with it , got told when i got it that i would not like it and that was 5 years ago and i have never looked back.

Reply to
Chris

Good so go and sale that thing you got and go back to a 405. and make us all very happy lol lol.

Reply to
Chris

The saga continues.

I've tested the MAP sensor on the road. The reading at tickover or with the engine stopped is 2.34 volts. The highest reading I got was

2.6 volts at about 3500 RPM pulling uphill in second gear. Fairly good news I suppose because it shows that the turbo is at least doing something. I reckon that if it was broken if anything I'd see a vacuum at the intercooler.

On the downside though, the antipollution fault has just come up. Do you think that has been the trouble all along?

Thanks

Richard

Reply to
Richard Swaby

Yes. The engine is limited to 2500 RPM when antipollution fault comes up. Would explain the lack of power.

Godfrey.

Reply to
Godfrey Wilkes

Thanks Godfrey

It's starting to make sense. I measured the boost pressure in the hose from the intercooler to the inlet manifold. The highest pressure measured is about 2.5 psi or 0.16 bar which corresponds to about 2.6 volts. Also, the MAP sensor reading drops to 2.25 volts on overrun, suggesting a vacuum in the inlet, which is what you'd expect if the turbo stops blowing. All this suggests to me that the MAP sensor is probably OK.

Could there be something wrong with whatever controls the turbo? Is there a solenoid valve or something that controls the waste gate? Perhaps the waste gate is stuck open.

By the way, the antipollution fault has mysteriously gone away.

Sorry if these questions show my ignorance. I've never had a turbo diesel before.

Reply to
Richard Swaby

Turbos are o.k when running o.k you start getting problem with them time to get rid of it ,lol.

Reply to
Chris

I can't add much else as I'm no expert on turbo diesels, apart from being an owner of a 307 HDi DTurbo 110 which suffered from the dreaded antipollution fault about a year ago. The only adverse effect was rev limited to 2500 RPM. As I was on a motorway at the time the car continued to drive normally as

2500 RPM in 5th gear is over 70 MPH. Anyway, the fault was fixed by my Peugeot dealer under warranty. They replaced the particulate filter in the exhaust system and the lambda sensor (exhaust gas oxygen sensor). Check this out:
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I suspect the problem with your car could be a failing sensor. One other thing, the turbo in my car makes a distinctive whine but I can only hear it with the windows open. Presumably you can hear the turbo working in your car?

Godfrey

Reply to
Godfrey Wilkes

Just to let you know, it's fixed.

There were two problems. The vacuum valve that controls the turbo was duff and the elbow connecting the vacuum pipe to the servo actuator was split.

Perhaps I won't bother getting another 405 just now. I'll see how reliable this thing turns out to be.

Thanks everyone,

Richard

Reply to
Richard Swaby

So at last you got it done did it take them long to find the fault or was it in and done while you was on your way home ???(lol)

Reply to
Chris

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