vss, icv and strage issues - Electrical Forum - Peugeot 306 GTi-6 & Rallye Owners Club

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Subject: vss, icv and strage issues

m306

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Post #26

monty-69 wrote:

I have a similar issue with the engine jolting sharply on transition from revs to idle. Kind of feels like its all or nothing. Also the engine judders on over-run. Im still on with getting to the bottom of it when i have few minutes spare. The speedo on mine will very rarely stop working but the above faults happen all the time.

I don't think yours will be caused by the vss, it's more likely to be an earth I think. Just do as I did and try chasing the earths around the engine bay, I got lucky finding that one as I have no idea where an of them are. Or if it's not an earth then I don't know what yours is, but I'm sure someone will know

Or could be engine mount? If you don't have any other electrical issues then I'd put a juddering down to engine/gearbox mount, again someone will correct me if I'm wrong

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Posted 19th Feb 2012 at 22:17

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rikky 🦔

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Post #27

i'd say check the lower mount

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Posted 20th Feb 2012 at 12:37

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mike rallye

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Post #28

i need some help with this guys, today my speedo is not working correclty, it flickers between 0-20mph. i had a look at the earth on the box ,from the photo on here and that seems ok. so my question is how does it earth out? is it through the clocks or is there somewere else? .i dont know what else to check or were to start.

i changed the speed sensor last year- so any help would be grateful as i got no speedo at the moment

Posted 20th Feb 2012 at 18:40

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m306

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Post #29

Although my earth in the pic is clearly broken I have still not proved yet that that is the cause of my problems so for yours Mike I wouldn't assume it's just that one earth, try searching for any others just in case.

If the rest of your instrument panel is working then it won't be an issue there. Is the cable from your vss ok?

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supercharged China gti6 - Thu 16th Sep 1999 - sold
2010 megane rs250

Posted 20th Feb 2012 at 19:31

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mike rallye

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Post #30

by cable you mean the plug? .well i havent just looked at mine and found it to be down to a dodge plug. so it is currently working at the moment.

Posted 20th Feb 2012 at 19:55

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m306

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Post #31

Yeah I assume the vss sends its signal via cable to the ecu? So I'd check the plug and cable. So have you found your problem?

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supercharged China gti6 - Thu 16th Sep 1999 - sold
2010 megane rs250

Posted 20th Feb 2012 at 20:22

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mike rallye

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Post #32

yeah hope so,it working at the moment. i just wiggled the wires on the plug and it started to work. so i think it a dodge plug

Posted 20th Feb 2012 at 20:41

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m306

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Post #33

Let's hope that's it then, so atleast you know if it goes again then you know what to change

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supercharged China gti6 - Thu 16th Sep 1999 - sold
2010 megane rs250

Posted 20th Feb 2012 at 20:52

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stan_306gti6 Forum Admin

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Post #34

The (blue) plug that goes into the rear of the instrument panel does get loose over time and can cause similiar issues to what your having.

Easy enough to remove the instrument cluster and just check this plug for proper fitting. Only 4 x Torx screws and you can remove it. Yes

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Posted 20th Feb 2012 at 22:54

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m306

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Post #35

Mine won't be the plug on the instrument panel Stan, I've had that out a few times so know its back correct. Wouldn't that affect half the panel though?

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supercharged China gti6 - Thu 16th Sep 1999 - sold
2010 megane rs250

Posted 21st Feb 2012 at 00:01

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stan_306gti6 Forum Admin

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Post #36

m306 wrote:

Mine won't be the plug on the instrument panel Stan, I've had that out a few times so know its back correct. Wouldn't that affect half the panel though?

It could do, but remember its a multi plug so therefore it could be that the plug is nearly home and some things are just about connected and a couple of pins aren't. It's unlikely, although worth checking. Also it could be that plug is clipped in properly but some of the pins have become electrically dirty over time and require the plug to be unplugged then plugged back in to clean them. Wink

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Peugeot 306 GTi-6
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Posted 21st Feb 2012 at 15:32

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m306

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Post #37

Valid point Stan and I agree that could be the cause for a temperamental speedo, but surely that scenario would only affect the instruments, that shouldn't cause my other problems?

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supercharged China gti6 - Thu 16th Sep 1999 - sold
2010 megane rs250

Posted 21st Feb 2012 at 15:49

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stan_306gti6 Forum Admin

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Post #38

m306 wrote:

Valid point Stan and I agree that could be the cause for a temperamental speedo, but surely that scenario would only affect the instruments, that shouldn't cause my other problems?

This is true, and in your particular case I believe its down to a dodgy Earth, most likely the one you found.

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"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love

Posted 21st Feb 2012 at 18:29

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m306

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Post #39

I know it's a long shot but it's now developed a hesitation for the first few minutes after startup, and is very sluggish, is it possible that these new issues could also be linked to that earth? I guess they will still be electrical related even if they are not?

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supercharged China gti6 - Thu 16th Sep 1999 - sold
2010 megane rs250

Posted 21st Feb 2012 at 19:43

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stan_306gti6 Forum Admin

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Post #40

The hesitation could be down to a lambda fault, or due to the fact it appears just after startup it could be the CTS has gone bad and is not supplying the engine with fuel enrichment.

Is it ok once warmed up?

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"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love

Posted 22nd Feb 2012 at 08:43

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m306

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Post #41

Yeah it's just the first few times I try to give it some throttle, after that it pulls like it should

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2010 megane rs250

Posted 22nd Feb 2012 at 15:35

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stan_306gti6 Forum Admin

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Post #42

Does indeed sound like its running too lean for those first few moments, and then when you ask for power, the engine isn't supplied with enough fuel to produce it.

Monitor it for the next 3 days and see if the problem gets any worse or not, then we can have a further think. Yes

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"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love

Posted 22nd Feb 2012 at 19:21

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m306

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Post #43

Ok will do, thanks again

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2010 megane rs250

Posted 22nd Feb 2012 at 22:22

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m306

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Post #44

Time for an update, the earth cable was fixed last night, it ran like a dream on the way home but... This morning from cold the problems still persist. Next to change is the vss

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supercharged China gti6 - Thu 16th Sep 1999 - sold
2010 megane rs250

Posted 7th Mar 2012 at 12:54

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stan_306gti6 Forum Admin

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Post #45

If its only a problem from cold mate, the first place I would look is the CTS. They are fairly cheap too around £18 I think. Smile

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"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love

Posted 7th Mar 2012 at 15:02

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m306

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Post #46

Is that coolant temp sensor? If so how is that affecting the speedo, icv etc?

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2010 megane rs250

Posted 7th Mar 2012 at 15:05

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stan_306gti6 Forum Admin

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Post #47

m306 wrote:

Is that coolant temp sensor? If so how is that affecting the speedo, icv etc?

Yes it is the Coolant Temp Sensor. It won't be affecting the speedo or ICV but you said you had hesitations from cold and I am wondering if the CTS is reading wrong and not giving the engine enough fuel enrichment when cold. Wink

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"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love

Posted 8th Mar 2012 at 07:30

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Obeast

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Post #48

Sorry to hijack but is the vss on the engine? Ive got a xsara thats all, and have intermitent cutting out . Ill also check my earths 2moro

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Posted 8th Mar 2012 at 20:44

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stan_306gti6 Forum Admin

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Post #49

The VSS is the Vehicle Speed Sensor, which is located at the rear of the gearbox near to the diff housing. Yes

It is the component which operates the speedometer. Smile

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"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love

Posted 9th Mar 2012 at 08:58

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m306

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Post #50

Is it a through the wheel arch job to change it?

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supercharged China gti6 - Thu 16th Sep 1999 - sold
2010 megane rs250

Posted 9th Mar 2012 at 09:49

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