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View Full Version : engine warning light.diagnosis test performed


bigdoods
17-10-2008, 06:33 PM
got my car back on the road there the day before yesterday.i left my light on and the battery went flat.i got it jumped.that was all well and good.5 mins later i boosted it and the engine warning light came on.
there has been absolutely no loss in power in the car.
its boosting fine.
i turned off the car and turned it back on and it disappeared.i thought all was ok until i boosted again and it came on again.
it keeps doing this.

performed a diagnosis test there..results were
25-lean signal
34-turbo pressure signal
52-knock sensor
12-rpm signal
13-rpm signal


car is fully forged td04 not mapped yet running .6 bar
bigdoods
17-10-2008, 07:36 PM
reset codes there.took her for a spin and rediagnosed it.

52-knock sensor

seems to be the problem.
do these go often or why is this light showing can any one tell me?
WallaceGlanza
17-10-2008, 07:46 PM
Boosting it with a non mapped td04 set up may have something to do with all the errors!

Get it setup properly before boosting anywhere.
Jay
17-10-2008, 07:57 PM
Check the knock sensor is connected securely. If not it will bring on the EML if the car is revved over 5k. It's on the back of the block below the rather bloody hot waterpump feedpipe as I discovered on one today..
Spoonz
17-10-2008, 08:03 PM
thats like the 3rd knock sensor problem i have seen 1 of my mates got thsi problem and we put it down to a dodgy sensor
bigdoods
18-10-2008, 12:17 AM
thats like the 3rd knock sensor problem i have seen 1 of my mates got thsi problem and we put it down to a dodgy sensor

i hope thats all it is.have to save to get it mapped.at .6 i didnt think it could do much damage.thanks
bigdoods
19-10-2008, 02:40 PM
turned out that it was running lean.i put a sard rrfpr in there running at 3.5 bar.now it comes on for the knock sensor.what will i do?or why does this happen?its not loose either as i stuck my hand in and checked it there.
bigdoods
19-10-2008, 03:10 PM
help please.im lost and dont want to drive the car
WallaceGlanza
19-10-2008, 03:20 PM
Take it to a rolling road and get them to set it up and check it over.

Are you using decent fuel? Low octane stuff can increase knock.