just done a ecu diagnostic test

result 34

detation sensor circuit :confused: :confused:

what the f@@@ is that?

 

steve

Hi Steve,

 

Do a search, you'll find loads about it. Try cleaning the connector first :)

 

Vijay

ive done a search

didnt come up with anything

 

steve

search for "code 34" and "det sensor" :)

 

Vijay

thanks mate

 

steve

and try

"Detonation Sensor"

and not

"detation sensor"

 

Im the official dyslexic one here ;)

Stevo

what have you done to her :( :(

The ECU uses the detonation sensor to detect if the engine is suffering from detonation due to overboost / lean running / crap fuel etc.

 

It does a few things: Puts the system in safety boost (if the stock solenoids are still connected). Sets the ECU to use different fuel/timing maps (presuming the code you run has them - some tuners don't)

 

Basically if you have an aftermarket boost controller and JWT chip then you'll probably not notice a difference. If you don't you'll be running down on power.

Stevo

what have you done to her :( :(

 

 

broke her i think mate.

hows yours going done the tapits yet

 

steve

The ECU uses the detonation sensor to detect if the engine is suffering from detonation due to overboost / lean running / crap fuel etc.

 

so if there is a big air leak like big turbo pipe split

detonation sensor would detect it and show code 34

 

steve

No, it shows code 34 because the sensor/wiring is bust I think!

ok thanks mate

 

 

steve

John,

 

I was told yesterday that the JWT does not have any saftey maps and basically has 2 identical maps - do you know if that's right?

 

Vijay

Yeah, all the maps are the same.

for the record, detonation does this kind of thing to your pistons

 

 

when code 34 is showing the car will be running safety boost, code 34 will only show if there is a malfunction of the sensor, not if detting is occuring.

ow

looks like that hurt

 

steve

Stevo all the lifters turned up this pm from courtesy cannot belive how quick we can get parts etc from the good ol U S of A and saved a bundle even with postage!!

so will start on her this weekend

all the best with FEM!

cheers

Dave :hyper:

No, it shows code 34 because the sensor/wiring is bust I think!

There is a way of bypassing the detonation sensor, not

sure what it is though, use's a transistor from a tv or

something like that! Obviously if it actually is detonating,

then this ain't gonna help you, chances are, it's the connectors

getting gacked up though.

If you do bypass it and the car does start detonating, then

you ain't gonna know....until she goes bang! :(

Yeah, to bypass it stick a 1M ohm resistor across the connector.

not recommended tho

As someone here posted tho - the det sensor only picks up detting below 3000rpm?

Can't remember the exact range it picks it up but it's only at a fairly narrow rev band and pretty high load from memory.

TBH, if you've got a boost controller and JWT/SE ECU, then you don't really loose anything by bypassing it anyway.