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Author Subject: Power dips and ABS light?
matt16v

Regular

Location: SE

Registered: 24 Jul 2011

Posts: 217

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Post #1
There's a certain section of a b road loop I made that has a long right hander where you can get the power down. When putting said power down it seems to dip in power when the front left goes over any minor bumps or road surface changes. I also get the furthest right light come flickering on the dash, which the diagram below says is the ABS light (14).



Dodgy ABS sensor or something? Weird as I'm nowhere near the brakes when it happens. Car otherwise is running great.

________________________________________

1999 Astor Grey GTi-6 OEM+
Posted 10th Apr 2013 at 22:17
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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

Posts: 21,768

Status: Offline
Post #2
As you go over the bumps or change the road surface, it's most likely losing traction momentarily and that's what is bringing on the light. Even though the light is for ABS, it's constantly sensing the wheels motion and if they start to slip it will show a fault.

The same thing will happen if you run the car in gear on axle stands, as the front wheels will be turning but the rears will be stopped and the ECU flags a fault.

________________________________________

"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 11th Apr 2013 at 11:54
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matt16v

Regular

Location: SE

Registered: 24 Jul 2011

Posts: 217

Status: Offline
Post #3
I think you're right. This is the first car I've had that will break traction so that's why it felt odd

________________________________________

1999 Astor Grey GTi-6 OEM+
Posted 12th Apr 2013 at 08:05
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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

Posts: 21,768

Status: Offline
Post #4
Stop being such a hooligan? Laugh

________________________________________

"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 12th Apr 2013 at 10:23
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matt16v

Regular

Location: SE

Registered: 24 Jul 2011

Posts: 217

Status: Offline
Post #5
Convinced this is actually a problem now. Happens when I'm definitely not breaking traction and not being a hooligan, and the radio turns off and on again, lights flicker etc.

Found a thread with the same issue here - http://www.306gti6.com/forum/showthread.php?id=126896

PM'd OP to see if he got to the bottom of it but never got a response.

________________________________________

1999 Astor Grey GTi-6 OEM+
Posted 12th May 2013 at 21:29
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bigbadbowen

Seasoned Pro

Location: Winchester

Registered: 21 Nov 2003

Posts: 13,753

Status: Offline
Post #6
Sounds like a loose earth battery terminal ?
Posted 12th May 2013 at 21:53
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matt16v

Regular

Location: SE

Registered: 24 Jul 2011

Posts: 217

Status: Offline
Post #7
Could be I suppose. I wouldn't have thought that would cause the car to jerk a little though? Literally a split second loss of engine power and then it's back. I'll do some more testing and come back with a more accurate description I think.

________________________________________

1999 Astor Grey GTi-6 OEM+
Posted 12th May 2013 at 21:58
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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

Posts: 21,768

Status: Offline
Post #8
If that's the case then it definitely sounds like a momentary lack of electrical power, check/clean/tighten those battery terminals first. Thumbs up

________________________________________

"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 13th May 2013 at 05:07
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matt16v

Regular

Location: SE

Registered: 24 Jul 2011

Posts: 217

Status: Offline
Post #9
Meant to post back here. Stalled it at a roundabout a couple of weeks ago and then had no electrics at all. Quick wiggle of the battery leads and she was fine.

Got home and re installed the battery and noticed the battery had a lot of room to slide around inside the battery box. Put some wedges round all sides and haven't had the problem since. Pretty convinced it was the battery sliding around causing the problem.

________________________________________

1999 Astor Grey GTi-6 OEM+
Posted 11th Jun 2013 at 12:33
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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

Posts: 21,768

Status: Offline
Post #10
Yep, sounds like you've nailed it. Thumbs up

Obviously the power was being momentarily lost and flagging up a fault.

________________________________________

"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 11th Jun 2013 at 16:21
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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,839

Status: Offline
Post #11
sounds like the wrong battery and tired terminals not clamping properly.

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Bring on the Trumpets.

Posted 11th Jun 2013 at 18:40
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