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#1 2019-05-15 00:54:54

GRIFFIN
Member
From: DURHAM
Registered: 2019-03-16
Posts: 36

THROTTLE PEDAL POSITION SENSOR FAULT ON 2006 1.9 NON TURBO

When I had my EGR valve problem, I had a mechanic friend of mine check the ECU for faults and his scanner said throttle pedal position sensor fault, which I ignored as I knew my fault was EGR related. Now everything is working fine, the pedal sensor fault is still there and it won't clear, also the engine management light has started randomly illuminating (mainly when it gets up to temperature) and then going out again.

I don't know if the problems are related but would like to locate the pedal sensor to try to find any poor connections or faults and fix them or replace the sensor. Can anyone tell me where the damned thing is? The only thing I can see in the on line manual is the charging lever potentiometer, which has slotted mounting holes. Is this another name for the pedal sensor? Or is it something different altogether? Also what effect would it have to undo the bolts and rotate the potentiometer? I think they are just called pots for short but what does this one do and could adjusting it help or even hinder my problem?

Cheers, Griff.


If you can meet with Triumph and Disaster
And treat those two impostors just the same

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#2 2019-05-15 16:04:40

Casper
Member
From: East Lothian
Registered: 2015-12-20
Posts: 1,265

Re: THROTTLE PEDAL POSITION SENSOR FAULT ON 2006 1.9 NON TURBO

I presumed this was it (pic) Is there not a Haynes manual for these vans. The bloody CD is next to hopeless.

20190506-154546.jpg

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#3 2019-05-16 10:52:46

vaz2121
Member
From: SW. Scotland
Registered: 2015-08-31
Posts: 537

Re: THROTTLE PEDAL POSITION SENSOR FAULT ON 2006 1.9 NON TURBO

Casper wrote:

I presumed this was it (pic) Is there not a Haynes manual for these vans. The bloody CD is next to hopeless.

https://i.postimg.cc/VkdtdL0s/20190506-154546.jpg

Being that the DW8 has a cable rather than fly by wire set up I'd say what Casper's foto is pointing at...........

Other than a potentiometer measuring throttle angle in relation to fuel metering (I'd assume)...........

How that effects what control the ECU has over things  in this basic form ?.........

I'll go along with your thoughts on treatment............

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#4 2019-05-17 00:03:55

GRIFFIN
Member
From: DURHAM
Registered: 2019-03-16
Posts: 36

Re: THROTTLE PEDAL POSITION SENSOR FAULT ON 2006 1.9 NON TURBO

Hmmmmm yeah, mine is the DW8B but that is the same part. Problem is, I don't know if the throttle pedal position fault recorded by the ECU is what is making the engine management light come on intermittently or not.

I think I will get a Haynes manual, they do usually have a good fault finding section. In the meantime I'm gonna check all the connections and see If I can find any loose wires that may be causing the problem before I disturb or try to adjust the pot.

Cheers, Griff.


If you can meet with Triumph and Disaster
And treat those two impostors just the same

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#5 2019-05-17 07:50:28

vaz2121
Member
From: SW. Scotland
Registered: 2015-08-31
Posts: 537

Re: THROTTLE PEDAL POSITION SENSOR FAULT ON 2006 1.9 NON TURBO

I'm going to assume from your post that you've encountered a similar problem as I've had in past ................ (not van Thought)
"Engine light comes on and then goes out" ......... Leaves no trace of historic fault..................
The only way I caught mine was have the code reader plugged in while it was happening.............Not much of a revelation I admit........

It was noted there was a bit of a pattern to mine ........ {It illuminated usually when waiting at lights or junctions}

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#6 2019-05-17 13:36:58

GRIFFIN
Member
From: DURHAM
Registered: 2019-03-16
Posts: 36

Re: THROTTLE PEDAL POSITION SENSOR FAULT ON 2006 1.9 NON TURBO

Hi Vaz,

Yes sounds very similar to mine, Do you remember what the fault was with yours?

I'm gonna check the cable tension to see if it may be too slack or too tight.

Then I'm gonna disconnect the potentiometer wiring to see if the light comes on all the time.

Cheers, Griff.


If you can meet with Triumph and Disaster
And treat those two impostors just the same

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#7 2019-05-18 09:05:28

vaz2121
Member
From: SW. Scotland
Registered: 2015-08-31
Posts: 537

Re: THROTTLE PEDAL POSITION SENSOR FAULT ON 2006 1.9 NON TURBO

GRIFFIN wrote:

sounds very similar to mine, Do you remember what the fault was with yours?

Bearing in mind it wasn't with the van and easily ten yrs ago with a 96 1.8 Vectra............

IIRC it was the MAF ......... as I do remember getting a cheepo off eBay which was on car for like  a week  ....... one robbed and fitted off another car and (He's nearly 40 now) The Boy giving the original MAF  clean out with a squirt of either carb or brake cleaner and it running the rest of it days with the original......... Certainly with us with that MAF in it.......... But can't for life of me rememer exactly if it was one and same event.......

Sorry

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#8 2019-05-18 13:05:51

GRIFFIN
Member
From: DURHAM
Registered: 2019-03-16
Posts: 36

Re: THROTTLE PEDAL POSITION SENSOR FAULT ON 2006 1.9 NON TURBO

Ah well that's good, when I first had my EGR problem I replaced the MAF sensor, as it ran slightly better when it was disconnected. Unfortunately that wasn't the problem so I put the old one back on after cleaning it and put the new one back in it's box. I'll put the new one on again and see if it helps, next time the light comes on.

I have noticed though, that since the weather has been colder this week the engine management light hasn't come on as often. Last week when the ambient temperature was higher it was coming on much more often and staying on for much longer.

Ah well. that's a couple of things to try out as soon as it stops raining sad
Cheers, Griff.

Last edited by GRIFFIN (2019-05-18 15:27:10)


If you can meet with Triumph and Disaster
And treat those two impostors just the same

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#9 2019-05-19 00:45:47

GRIFFIN
Member
From: DURHAM
Registered: 2019-03-16
Posts: 36

Re: THROTTLE PEDAL POSITION SENSOR FAULT ON 2006 1.9 NON TURBO

Checked throttle cable today and it was way too slack, I did wonder why the pedal was so low and only had a very small amount of movement.

There was no retaining clip on the ribbed section of the cable, so it was all the way in. I didn't have the correct clip so I just opened up an R clip a little and that is doing the job. Haven't been far just yet so don't know what difference it will make but the engine management light has still come on again so it wasn't the cable tension causing that mad Bugger, will try the MAF sensor next.IMG_20190518_181020.jpeg


If you can meet with Triumph and Disaster
And treat those two impostors just the same

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#10 2019-05-20 01:37:35

GRIFFIN
Member
From: DURHAM
Registered: 2019-03-16
Posts: 36

Re: THROTTLE PEDAL POSITION SENSOR FAULT ON 2006 1.9 NON TURBO

MMMMMMMMM couple of things to report, today was warm again and engine management light was going on and off like a fairy light on a Christmas tree. Haven't had the chance to replace the MAF sensor yet but I did have a relatively long journey down to Yorkshire today. It would seem that, as one would expect, by adjusting the tension on the throttle cable my Scudo is now a little quicker. My top speed today has gone up from round 80mph to 90 mph, it would have probably been higher but I had to lift off in order to make the turn off on the motorway, sorry my mistake, I meant to say that I had reached the end of the runway on the private airfield where I was testing and had to lift off before I ran out of road.

Anyway, it may be worth checking but I dare guess that mine is not the only van that hasn't got this clip on the throttle cable. Of course there has got to be a down side to all of this but I'm pretty sure that next time I check my MPG it is not going to be in the high 30s, having said that the extra pedal travel has made the van much more driveable. The short travel on the throttle pedal made the accelerator feel like an on off switch, now the extra travel makes it feel much better.

Cheers, Griff.


If you can meet with Triumph and Disaster
And treat those two impostors just the same

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#11 2019-05-20 17:58:58

Casper
Member
From: East Lothian
Registered: 2015-12-20
Posts: 1,265

Re: THROTTLE PEDAL POSITION SENSOR FAULT ON 2006 1.9 NON TURBO

I remember doing 90 in my last 1.9D thinking "This is scary" It was all over the place but this van seems much more stable and planted

90 (ish) must be the magic number

20190520-162043.jpg

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#12 2019-05-20 23:32:42

kenbw2
Member
From: Bradford/Preston/Anywhere
Registered: 2017-11-26
Posts: 313

Re: THROTTLE PEDAL POSITION SENSOR FAULT ON 2006 1.9 NON TURBO

90! How steep was the hill?

I took mine to Germany once and on a flat all I got was 80.

Looking at your temp gauge it was hardly even breaking a sweat.

Last edited by kenbw2 (2019-05-20 23:33:17)


2000 Citroen Dispatch 1.9TD XUD9 Upcoming Camper
1999 Citroen Dispatch 1.9D DW8 Camper Conversion + full time home
1996 Peugeot 806 1.9TD XUD9 Spare vehicle
1998 Citroen Synergie 1.9TD XUD9 Snapped timing belt

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#13 2019-05-20 23:46:45

GRIFFIN
Member
From: DURHAM
Registered: 2019-03-16
Posts: 36

Re: THROTTLE PEDAL POSITION SENSOR FAULT ON 2006 1.9 NON TURBO

Hahaha, I like the fact that you obviously had a passenger to take that photo for you while you were driving.

I finally got round to changing the MAF sensor today but as soon as I went out the Engine management light came on. Worth noting that the ambient temperature was about 18.5c today, again a warm day and the light comes on more often.

Well just gonna have to get my pall out with his ECU reader to see what faults come up this time. Also gonna try adjusting or changing the potentiometer as that was the fault that wouldn't go away. Been looking on Ebay for a Haynes manual today but they only seem to be for the 2007 onwards variant and also a one called the pocket manual but that doesn't include the DW8B engine, so it looks like the trial and error method mad wins again.

Cheers, Griff.


If you can meet with Triumph and Disaster
And treat those two impostors just the same

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#14 2019-05-20 23:47:29

Casper
Member
From: East Lothian
Registered: 2015-12-20
Posts: 1,265

Re: THROTTLE PEDAL POSITION SENSOR FAULT ON 2006 1.9 NON TURBO

kenbw2 wrote:

90! How steep was the hill?

I took mine to Germany once and on a flat all I got was 80.

Looking at your temp gauge it was hardly even breaking a sweat.

That was the flat. As Griffin said pull the cable through using the clip. We used to have 306's as work cars what all came with slack cables when new. There is also a stopper on the floor under the throttle peddle. That should just screw out the floor. It was worth an extra few MPH also.

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#15 2019-05-20 23:51:22

Casper
Member
From: East Lothian
Registered: 2015-12-20
Posts: 1,265

Re: THROTTLE PEDAL POSITION SENSOR FAULT ON 2006 1.9 NON TURBO

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#16 2019-05-23 01:09:05

GRIFFIN
Member
From: DURHAM
Registered: 2019-03-16
Posts: 36

Re: THROTTLE PEDAL POSITION SENSOR FAULT ON 2006 1.9 NON TURBO

Today I adjusted my throttle pedal position sensor. The manual says it's range is 0.2 to 4.9 V although it doesn't say what the Idle setting should be. the lowest setting I could get was around 1.22 V. Then I looked on the lever that the throttle cable is attached to and it says Lucas 2.45 volts on a little yellow plastic tab. So I thought what the hell, it must mean something or why put in there. So I fiddled around until the multi meter actually read 2.45 V.

Then I took the van out for a test run and it seemed quite smooth and free revving, much happiness, but the damned engine light still came on for a short time after five minutes. I am pretty sure that the engine light and the recorded TPS fault are two separate things.

Does anyone know if my assumption about the little yellow tab is correct?

Cheers, Griff.


If you can meet with Triumph and Disaster
And treat those two impostors just the same

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