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Anti-pollution fault + Weird happenings 2001 406 hdi 90 RHY

rhysm

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Joined: Sep 17, 2009 Posts: 4 Posts Left: 0
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What Peugeot do you own?: 406
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Age: 23
Gender: Male
Insurance renewal month: June

PostPosted: Thu 17 Sep, 2009 9:13 am Reply with quote
Going over a resurfaced road a couple of months ago and my MIL light came one and the good old anti-pollution fault popped on, but originally with no side effects.

Now I have intermittent faults i.e sometimes it drives perfectly and others it will "hold back" as if the fuel is restricted all the way up through the gears then seems to hit a wall in all gears BUT if i put my foot flat to the floor it seems to break through that limit and accelerate right the way to way exceeding legal limits but as soon as i ease off it feels like its restricting again very abruptly.

I notice that when the "restriction" is happening the idle speed changes from 800rpm to 1200rpm. Fault codes showed fuel rail pressure sensor which i have eliminated by swapping it out with a known working one with the same issues and also Throttle position sensor.

Any ideas?

Any more info you need let me know

Come on canyondust come and save the day!!!

Very Happy
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Re: Anti-pollution fault + Weird happenings 2001 406 hdi 90

toddy

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PostPosted: Thu 17 Sep, 2009 9:51 am Reply with quote
hi,,are you able to check the unison of tracks 1 and 2 on throttle potentiometer???
also what live data can you get when you hit the hold back?
have you tried changing the fuel filter.

toddy
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Re: Anti-pollution fault + Weird happenings 2001 406 hdi 90

rhysm

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Joined: Sep 17, 2009 Posts: 4 Posts Left: 0
Status: Offline
What Peugeot do you own?: 406
How did you find Peugeot Central?: Google
Age: 23
Gender: Male
Insurance renewal month: June

PostPosted: Thu 17 Sep, 2009 9:58 am Reply with quote
Apologies in advance, I am not highly technical mechanically.

I haven't read live data as yet but could you give me an indication of things I should look out for whilst doing so?

Also could you give me a brief overview at what i'm looking for on the potentiometer?

I haven't changed the fuel filter yet will be doing so Saturday whilst doing a full service and front brakes.
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Re: Anti-pollution fault + Weird happenings 2001 406 hdi 90

toddy

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Joined: May 21, 2009 Posts: 2681 Location: ilkley,west yorkshire Posts Left: 1
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What Peugeot do you own?: 307
How did you find Peugeot Central?: Google
Age: 36
Gender: Male
Insurance renewal month: January

PostPosted: Thu 17 Sep, 2009 10:50 am Reply with quote
hi,,there is no visual check on potentiometer.
the potentiometer reports back to the ecu pedal position,but there are 2tracks(2signals)they must run parrallel to each other on a signal scale.
on the 406 there quite common but normally put eml light on.

it would require scoping or graph paramters looked at,but without the equipment its hard.
i would also disconnect egr vac pipe just to eliminate that also.
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Re: Anti-pollution fault + Weird happenings 2001 406 hdi 90

rhysm

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Joined: Sep 17, 2009 Posts: 4 Posts Left: 0
Status: Offline
What Peugeot do you own?: 406
How did you find Peugeot Central?: Google
Age: 23
Gender: Male
Insurance renewal month: June

PostPosted: Thu 17 Sep, 2009 1:21 pm Reply with quote
What is the fix if the potentiometer channels are out of sync?
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Re: Anti-pollution fault + Weird happenings 2001 406 hdi 90

toddy

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Joined: May 21, 2009 Posts: 2681 Location: ilkley,west yorkshire Posts Left: 1
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What Peugeot do you own?: 307
How did you find Peugeot Central?: Google
Age: 36
Gender: Male
Insurance renewal month: January

PostPosted: Thu 17 Sep, 2009 1:37 pm Reply with quote
hi,,its a new one,not so expensive and a 5min fix.

toddy
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Re: Anti-pollution fault + Weird happenings 2001 406 hdi 90

rhysm

On the Grid On the Grid
Joined: Sep 17, 2009 Posts: 4 Posts Left: 0
Status: Offline
What Peugeot do you own?: 406
How did you find Peugeot Central?: Google
Age: 23
Gender: Male
Insurance renewal month: June

PostPosted: Fri 18 Sep, 2009 8:35 am Reply with quote
Where is it located?
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Re: Anti-pollution fault + Weird happenings 2001 406 hdi 90

toddy

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Joined: May 21, 2009 Posts: 2681 Location: ilkley,west yorkshire Posts Left: 1
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What Peugeot do you own?: 307
How did you find Peugeot Central?: Google
Age: 36
Gender: Male
Insurance renewal month: January

PostPosted: Fri 18 Sep, 2009 8:48 am Reply with quote
hi,,,bolts near the battery,you should see your throttle cable going to it.

toddy
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