Griff stalling

Griff stalling

Author
Discussion

dantvrgriff

Original Poster:

86 posts

158 months

Monday 29th June 2015
quotequote all
Hi,

need some help - my Griff 500 when cruising at low rpm will suddently stall completely. It will only come to life again if I either increase the thottle or take away the thottle completely. It feels like the fuel supply stops so I was wondering if it could be related to the pressure regulator - vacuum ? At full throttle the car runs great why I don't think it is either fuel filter or pump.

Cheers,

Dan

dantvrgriff

Original Poster:

86 posts

158 months

Wednesday 1st July 2015
quotequote all
Hi,

Thanks for the feedback. I connected the car to the Rover Gauge software and it gave me fault codes 17 (Throttle potentiometer) and 19 (airflow meter). I had the throttle potentiometer checked at work and it seemed right (no noise - steady increase in resistance) - adjusted the mounting to get the right voltage output at idle but still getting those fault codes. Do you think I need to change the airflow meter - any way to check for sure if it is working ?

Cheers,

Dan

dantvrgriff

Original Poster:

86 posts

158 months

Thursday 2nd July 2015
quotequote all
The rover gauge software allows me to reset the fault codes but they keep coming back

dantvrgriff

Original Poster:

86 posts

158 months

Thursday 2nd July 2015
quotequote all
The rover gauge software allows me to reset the fault codes but they keep coming back

dantvrgriff

Original Poster:

86 posts

158 months

Sunday 5th July 2015
quotequote all
Cheers Blitzracing will investigate the to further.

dantvrgriff

Original Poster:

86 posts

158 months

Monday 13th July 2015
quotequote all
Thanks for all the input.
The heat inside the bonnet of the Griff is mad.
Connected the car to rover Gauge software again and noticed AFM readings of 6% during iddle. According to the great documention from Blitzracing it should be around 35% at iddle. The Throttle Potentiometer shows 5%. I keep getting the fault codes 17 (throttle potentiometer) and 19 (AFM). Any way of checking if the AFM needs replacing ? Also does the ECU reset when you undo the battery ?


dantvrgriff

Original Poster:

86 posts

158 months

Monday 13th July 2015
quotequote all
Thanks for the feedback. I live in Luxembourg so unfortunately there are not so many similar cars around so that I could test another AFM.

I will investigate further and let you know.

Cheers

dantvrgriff

Original Poster:

86 posts

158 months

Monday 13th July 2015
quotequote all
Thanks for the feedback. I live in Luxembourg so unfortunately there are not so many similar cars around so that I could test another AFM.

I will investigate further and let you know.

Cheers

dantvrgriff

Original Poster:

86 posts

158 months

Tuesday 14th July 2015
quotequote all
Did some investigating. When measuring the output of the AFM I begin with a reading of 0.5V and only after 6 to 8 sec it comes down to 0.34 V.
When connecting the Rover Gauge software using direct I get 35% of the AFM reading and 7% on the Throttle Pot reading at idle. The car still stalls occasionally and it is driving me nuts.

What do you suggest me to change first - the AFM or the TP and from where can I buy them for a reasonable price ?

Thanks again