Two questions..... EGR and Fuel Corrections

osullivant · Jul 24th, 2016, 19:35

I have been having trouble for weeks, am still getting MAF 135F, despite fitting a new MAF and TMAP and Exhaust gas Sensor... Now that I have VIDA working maybe things will improve....

This clip was captured shortly after I got VIDA to operate following a drive, when I stopped the Air Mass/ Stroke was showing a value of nearly twice the Mass / desired until I hit 2000 rpm when they pretty much equalized, and this remained. My instinct now is that this is an EGR problem, I took this off yesterday and it is now the cleanest EGR in the world but It was extraordinarily difficult to move it as if the motor was seized...

When I got the camera out and recorded it there was only a little discrepancy

https://drive.google.com/file/d/0B6H...ew?usp=sharing

the above shows readings at idle through 4500rpm

Can anybody tell me if the EGR appears to be doing the right thing??

My Fuel correction/cylinder speeds at idle with a hot engine are as follows.
1. 689 r/min 2. 694 r/min 3. 689 r/min 4. 702 r/min 5. 692 r/min

1; 0.02 -0.02 2; -0.22 -0.4 3;0.14 0.11 4;-0.56 -0.68 5; 0.82 0.75

are these good bad or indifferent.... can injector issues reflect in a MAF fault??

Thanks

Tony

Jul 24th, 2016, 19:35	#1
osullivant Senior Member Last Online: Mar 25th, 2024 23:05 Join Date: Jul 2011 Location: cork	Two questions..... EGR and Fuel Corrections I have been having trouble for weeks, am still getting MAF 135F, despite fitting a new MAF and TMAP and Exhaust gas Sensor... Now that I have VIDA working maybe things will improve.... This clip was captured shortly after I got VIDA to operate following a drive, when I stopped the Air Mass/ Stroke was showing a value of nearly twice the Mass / desired until I hit 2000 rpm when they pretty much equalized, and this remained. My instinct now is that this is an EGR problem, I took this off yesterday and it is now the cleanest EGR in the world but It was extraordinarily difficult to move it as if the motor was seized... When I got the camera out and recorded it there was only a little discrepancy https://drive.google.com/file/d/0B6H...ew?usp=sharing the above shows readings at idle through 4500rpm Can anybody tell me if the EGR appears to be doing the right thing?? My Fuel correction/cylinder speeds at idle with a hot engine are as follows. 1. 689 r/min 2. 694 r/min 3. 689 r/min 4. 702 r/min 5. 692 r/min 1; 0.02 -0.02 2; -0.22 -0.4 3;0.14 0.11 4;-0.56 -0.68 5; 0.82 0.75 are these good bad or indifferent.... can injector issues reflect in a MAF fault?? Thanks Tony

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