Menu toggle

No Start............

scam75

scam75

Well-known member
Evening all

Just home from the golf club without the car. Wouldn't start, turns over fine but not interested in starting. Was fine this morning. Swapped the DME relay to no avail, had very little tools, recovery man couldn't start it. So its sitting waiting for a flat bed to recover it to the house.

I suspect the crank sensor. The tacho is bouncing as normal but sometimes when turning over, without starting, the tacho rhythmically bounces its way up to about 3.5k rpm, goes up in increments whilst cranking. 500, 1000, 1500, 2000, 2500, 3000, 3500 then no higher, the engine certainly isn't spinning at that speed.

I unplugged the crank sensor (I think it was the crank sensor, the higher one in the bracket?), wiggled wires, plugged it back in, no difference.

It could be the immobiliser, which is bult into the alarm, it could also be MAF or MAF wiring related like I've had before but the odd tacho behaviour is focusing me on the crank sensor (or reference sensor). Dunno, baffled.

What are your thoughts chaps?

Cheers

Stuart
 
dlknight said:
Sorry :) mine hardly bounces at all, just a little tiny movement.
Click to expand...

Yes that's what mine normally does, except today it decided big massive bounces were in order! Not all the time though, most times it was just doing its tiny bouncing then a couple of times it went ballistic. Up 1000rpm, down 500rpm, 1000rpm, down 500rpm, up 1000rpm until reaching 3500rpm before I stopped cranking. Most odd.
 
You must log in or register to reply here.

Posts made and opinions expressed are those of the individual forum members

Use of the Forum is subject to the Terms and Conditions

Disclaimer

The opinions expressed on this site are not necessarily those of the Club, who shall have no liability in respect of them or the accuracy of the content. The Club assumes no responsibility for any effects arising from errors or omissions.

Porsche Club Great Britain gives no warranties, guarantees or assurances and makes no representations or recommendations regarding any goods or services advertised on this site. It is the responsibility of visitors to satisfy themselves that goods and/or services supplied by any advertiser are bona fide and in no instance can the Porsche Club Great Britain be held responsible.

When responding to advertisements please ensure that you satisfy yourself of any applicable call charges on numbers not prefixed by usual "landline" STD Codes. Information can be obtained from the operator or the white pages. Before giving out ANY information regarding cars, or any other items for sale, please satisfy yourself that any potential purchaser is bona fide.

Directors of the Board of Porsche Club GB, Club Office Staff, Register Secretaries and Regional Organisers are often requested by Club members to provide information on matters connected with their cars and other matters referred to in the Club Rules. Such information, advice and assistance provided by such persons is given in good faith and is based on the personal experience and knowledge of the individual concerned.

Neither Porsche Club GB, nor any of the aforementioned, shall be under any liability in respect of any such information, advice or assistance given to members. Members are advised to consult qualified specialists for information, advice and assistance on matters connected with their cars at all times.

Porsche
Lockton
Pirelli
Officially approved
Oracle Finance
WEX Esso
Collecting Cars
Back
Top