I am looking to determine if my zed is in safety boost,

If I disconnect the detonation sensor temporarily,what are the signs of safety boost to look out for?

Will it be just a noticeable loss of power or will I be ably to read a drop on the standard boost gauge?

Also, would anyone be able to post a picture of the harness connector in question please?

If the car is in safety boost then it won't go above 7psi.

Cheers Steams,

Standard gauge under full load goes virtually off the scale!

so no safety boost then?

Doesn't sound like it's going into safety boost mate. lol

Bump!

Can anyone point me in the right direction as to which connector is for the det sensor please?

I seem to be only getting code 34 when cold but not when warm?

This may explain why she stumbles when cold as I think the ECU is backing the timing off back to 15 as opposed to gradually bringing it down from 30 during warm up!

Very visible on data scan, sits at 30 degrees at tick over, (1300rpm when cold) and as soon as touch the accelerator. wham! straight down to 15 and stumbles whilst at the same time knocking 500rpm ish off the tick over.

This can't be normal, surely??

Can't tell you which plug it is exactly but it's a two pin connector at the back of the engine and the only loom part that goes down the back of the engine. The EGR valve may will be in the way (assuming you've still got one). Find the lead that is going into the middle of the engine at the back and follow it up to the connector. This will be the DET sensor cable as the sensor is bolted to the block in the valley between the cylinder heads.

 

Sorry I can't be of more help.

Cheers Steams,

Well managed to find a connector with 2 wires, 1 black and 1 white in the middle heading downwards, disconnected it and ran data scan. No code 34!

I guess it's not that one then.

Puzzled to say the least.

Would someone kindly take a look at this photo please?

I would like to be certain that the cable going down to the depths of the back of the engine is going to the det sensor, and the short one going into the harness is going to the ECU.

 

It's just that I have been following this link so as to test for the correct the resistance! and unless I am going mad, (which is not surprising) the connectors appear to be the wrong way round?

http://www.zhome.com/ZCMnL/PICS/detonationSensor/detonationSensor.html

 

Assuming that they are, I am measuring 500 k Ohm resistance to the ECU and also getting 500 k Ohm to the det sensor! My understanding is that the det sensor should be reading 1 meg Ohm resistance or close to.

 

I have run data scan again only to discover that the car has started with code 34 the last 24 times. AArrrgghhh

As I am only getting half of the stated resistance, could this be the connector or is it definitely the det sensor?

Also,

Should I get 1 meg ohm across the 2 pins on the det sensor?

I can get 500 k ohms from 1 pin to earth, but nothing across the pins!!!

Anybody? please!

This may help

 

http://www.zhome.com/ZCMnL/PICS/detonationSensor/detonationSensor.html

Thanks Ossian,

Same link as I refereed to earlier, still convinced he has marked up the connectors wrong Mind you,

I am so miffed with this I probably can't see things right.

Looks like I am going to have to remove the plenum etc' and replace the sensor!!

Looks like a nightmare to me.