A mate is having problems with his Tigra 1.4XE,it's an M reg car. he says it gets spluttery when driving hard-ish, he took it to a garage and they did a fault find on it,and it said the knock sensor was faulty,now the man in the garage said he'd never seen a knock sensor go down,so it was more likely the ECU,the bill would be £260 for a replacement unit and unlocking by vauxhall (he said they are immobilised???)

so,where is the knock sensor on the engine,and is an ecu such a difficult job to swap,or could i just unplug and try a different unit,oh and where is the ECU too

 

Knock sensor on most vauxhall engines is at the back of it, its about the size of your thumb, and is bolted directly to the block.

The bloke in the garage has been smoking some REALLY good shit if he genuinely thinks its more likely to be the ECU!

VERY easy to change, just a single 13mm bolt in the middle of them (well on the 2.0 16v i assume the smaller motor is the same or very similar) and not expensive to buy.

DEFINATELY try the knock sensor first before buying a new fucking ecu!

 

this is what i said to matey,and can't beleive the garage didn't change the knock sensor when they got the fault code up!!!!!

i'll order a knock sensor and change it for him then,and see how it goes

Thanks Chip

 

Make sure you let it cool down first, burnt my arms to fuck on the exhaust when i HAD to change one in a hurry on Cally's car cause she was just about to go off on a long journey and had no time to wait for it to cool down beore i changed it
Every couple of turns of the spanner was punctuated by "OWWW, fucking thing"

 

 

will do

just priced one up,£41....is that about right? that's not from vauxhall BTW

 

 

Sounds about right for a new one.