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Peugeot 307 1.4 HDi 8HZ 2002 - Non start after oil pump replacement, code P0338 - Fixed #

Posted by Mark Robins on May 6, 2011, 1:07 pm

Year of Manufacture *: 2002
Engine Size and Code *: 1.4 HDI 8HZ
( Optional ) ECU Type: Bosch EDC16C3
( Optional ) Scanner Used: Autocom
( Optional) Fault Codes: P0338 Crankshaft Position Sensor A Circuit High in

Vehicle is a non-starter after oil pump replacement, Scoped both the Cam and crank sensors (hall type square wave) Amplitude of cam sensor signal is 11.5v, amplitude of crank sensor is 7.5v. As both sensors are identical in function; and voltage applied to sensors is 5v I'm thinking ECU problem. Ive checked ground on senors and ECU both OK, Data says amplitude and voltage to sensors should be 5V approx. Also checked continuity between ECU and sensors, also ECU grounds are OK.

Any insight greatly appreciated.

Mark

Re: Peugeot 307

Posted by Mark Carter <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1428' width='330' height='300' border=0 style='border:none;'> on May 7, 2011, 3:19 pm, in reply to "Peugeot 307"
Mark Carter

Hi Mark,

double check your specs, as I have different data from ESI.

Regards Mark

Modern cars, Its all wizardry and witchcraft

Re: Peugeot 307

Posted by Ray Mahon <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1915' width='330' height='300' border=0 style='border:none;'> on May 8, 2011, 2:53 pm, in reply to "Peugeot 307"
Ray Mahon

This is a good one.
Ray

Re: Peugeot 307

Posted by Mark robins <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1448' width='330' height='300' border=0 style='border:none;'> on May 10, 2011, 2:34 pm, in reply to "Re: Peugeot 307"

Looks like the amplitudes were around right given tha the vehicle was being cramked at the time!
ECU is being tested at the moment, will inform of any breakthrough.

Mark.

Re: Peugeot 307 waveform

Posted by Mark Robins <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1448' width='330' height='300' border=0 style='border:none;'> on May 10, 2011, 4:09 pm, in reply to "Re: Peugeot 307"

Not the best waveform was done at cranking speed.

It looks like I have more timing references per cam signal than your's Ray, I wonder if there is a problem with the crank pulley reluctor?
Mark

Re: Peugeot 307 waveform

Posted by Ray Mahon on May 11, 2011, 1:54 pm, in reply to "Re: Peugeot 307 waveform"
Message modified by board administrator May 12, 2011, 1:34 pm

I'd be having a look at the reluctor, to me some of the timing references you mention are actually the sensor not pulling down the 8v supplied by the ecu.
Possibly due to gap problems, can you scope it over a wider timebase and see if its occurring at the same reluctor points each revolution.

Re: Peugeot 307 1.4 HDi 8HZ 2002 - Non start after oil pump replacement, code P0338 #

Posted by Dave Hill <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT2783' width='330' height='300' border=0 style='border:none;'> on May 11, 2011, 11:59 pm, in reply to "Peugeot 307 1.4 HDi 8HZ 2002 - Non start after oil pump replacement, code P0338 #"

I think it is safe to say that there is an issue with the crank reluctor.

Either the air gap is marginal, or the sender wheel is damaged I would think.

The drop out in signal, looks to be repeated uniformly, but at the same time it isnt "crisp" at the point of drop out.

The sensors signal voltages tally with my example.

Re: Peugeot 307 1.4 HDi 8HZ 2002 - Non start after oil pump replacement, code P0338 #

Posted by Mark Robins <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1448' width='330' height='300' border=0 style='border:none;'> on May 12, 2011, 10:09 am, in reply to "Re: Peugeot 307 1.4 HDi 8HZ 2002 - Non start after oil pump replacement, code P0338 #"
Mark Robins

Thanks gentlemen,

Waiting for ECU return will keep you informed of progress.

Mark.

Re: Peugeot 307 1.4 HDi 8HZ 2002 - Non start after oil pump replacement. better waveform

Posted by Mark Robins <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1448' width='330' height='300' border=0 style='border:none;'> on May 13, 2011, 10:27 am, in reply to "Re: Peugeot 307 1.4 HDi 8HZ 2002 - Non start after oil pump replacement, code P0338 #"
Mark Robins

ECU tested OK, you can clearly see an extra timing reference so we going for a new reluctor.

Re: Peugeot 307 1.4 HDi 8HZ 2002 - Non start after oil pump replacement. better waveform

Posted by lee woods <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3096' width='330' height='300' border=0 style='border:none;'> on May 14, 2011, 5:04 pm, in reply to "Re: Peugeot 307 1.4 HDi 8HZ 2002 - Non start after oil pump replacement. better waveform"
Lee Woods

is the reluctor in the sump on the crank or is it on the flywheel in gearbox ?

Re: Peugeot 307 1.4 HDi 8HZ 2002 - Non start after oil pump replacement. better waveform

Posted by Mark Robins <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1448' width='330' height='300' border=0 style='border:none;'> on May 14, 2011, 9:32 pm, in reply to "Re: Peugeot 307 1.4 HDi 8HZ 2002 - Non start after oil pump replacement. better waveform"
Mark Robins

Hi Lee,

It's on the the cranks timing belt drive cog, it look like a coating of magnetic material like you would find on a video tape, we've inspected it but can find no damage, we also tried another crank sensor but got the same results, will keep you informed of what happens with the new reluctor.

Mark

Fixed #

Posted by Mark Robins on May 16, 2011, 11:54 am, in reply to "Re: Peugeot 307 1.4 HDi 8HZ 2002 - Non start after oil pump replacement. better waveform"
Message modified by board administrator May 16, 2011, 2:35 pm

New reluctor worked. The only thing we can think of that may have damaged the rluctor is it was put in to a magnetic parts dish, may have demagnetized it.
Thanks to everyone for their input.

Fixed #

Posted by Aidan Birley on May 16, 2011, 1:42 pm, in reply to "#FIXED"
Message modified by board administrator May 16, 2011, 2:40 pm

Hi

Was the pully tightened with an air wrench ?

Cheers Aidan

Re: Fixed #

Posted by Mark Robins <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1448' width='330' height='300' border=0 style='border:none;'> on May 16, 2011, 5:28 pm, in reply to "Fixed #"
Mark Robins

Not sure but will check with my mechanic, I guess your reasoning is that the shock of the hammers in the air wrench have some how damaged the reluctor, but I've carefully checked the ferrite coating and can see no physical damage what so ever.

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