Petrol Diagnostics

Post a Response

Vauxhall Corsa 1.0 A10XEP 2014 - Crank vs Cam waveform required #

Posted by Lee Mackintosh on August 19, 2018, 9:11 pm

Year of Manufacture: 2014
Engine Size and Code: 1000cc A10XEP

Would anyone please have a ckp vs cmp waveform for the above car.

I have one in logging a crank/cam correlation code. I'm not sure if its incorrect or not but the car is gutless as if its fuel starvation or blocked exhaust.

I know its had two timing chain kits fitted (aftermarket then a genuine) plus a new crank sensor. Still has same fault according to trade customer.

Re: Vauxhall Corsa crank vs cam waveform

Posted by Steve Harvey on August 20, 2018, 7:43 am, in reply to "Vauxhall Corsa crank vs cam waveform "
Steve Harvey

Hi Lee,
Did this have the fault before the chains were changed? Did they use the correct timing tols?
Regards Steve Harvey

Re: Vauxhall Corsa crank vs cam waveform

Posted by Lee Mackintosh on August 20, 2018, 11:16 am, in reply to "Re: Vauxhall Corsa crank vs cam waveform "
Lee Mackintosh

I think this was the reason the chain was changed. Apparently it was noisey and not running right.

I don't know what tools were used as the trader is economical with the truth. I asked him if he used tools and he said if course

I think maybe it's the camshaft sensor pickup piece incorrectly set

Re: Vauxhall Corsa crank vs cam waveform

Posted by Lee Mackintosh on August 20, 2018, 10:49 pm, in reply to "Vauxhall Corsa crank vs cam waveform "
Lee Mackintosh

I think I may have been wrong to assume timing was mechanically correct. I borrowed the correct tools and checked to find it was out by a tooth or maybe 2.

Although it still doesn't run correct and haven't checked for returning codes I am happy the timing is now corrected.

attached are the new waveforms but I cannot be certain they are known good yet.

Re: Vauxhall Corsa 1.0 A10XEP 2014 - Crank vs Cam waveform required #

Posted by andrew pethig on August 21, 2018, 6:15 pm, in reply to "Vauxhall Corsa 1.0 A10XEP 2014 - Crank vs Cam waveform required #"
Andrew Pethig

looking at the waveform i suspect that the exhaust is restricted

at 360 degrees there should be intake vaccum starting but the pressure remains the same

Re: Vauxhall Corsa 1.0 A10XEP 2014 - Crank vs Cam waveform required #

Posted by Lee Mackintosh on August 21, 2018, 7:56 pm, in reply to "Re: Vauxhall Corsa 1.0 A10XEP 2014 - Crank vs Cam waveform required #"
Lee Mackintosh

It does sound like an exhaust blockage or severely retarded timing.

Thing is now it bellows out oil smoke.

If it was a restricted exhaust I'd think the section around 180degrees to be high pressure as this is the exhaust stroke afaik.

I can remove lambda easy enough

« Back to index

[ Petrol Diagnostics ]