Garage Support

Post a Response

Fiat Seciento 900cc 1999 - Hot start fault #

Posted by Stuart Smith on September 7, 2012, 1:43 pm

Year of Manufacture *: 1999
( Optional ) Engine Code or CC: 900cc

hi
i have a seciento 900cc which when its warm tho sometimes cold, if you try to start it, it just turns over and over, but as soon as you switch off and retry it starts fine.

i have fuel delivery, injector pulsing, but no spark when it wont start, but i have a switching signal to the coils. so i changed the coils, and as youve guessed still the same.

anyone any ideas please

cheers
stuart

Re: fiat seciento hot start fault

Posted by andyhyoung <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT5148' width='330' height='300' border=0 style='border:none;'> on September 7, 2012, 6:12 pm, in reply to "fiat seciento hot start fault"
Andrew Young

I have seen a few erratic starting and run faults on these caused by a faulty tdc sensor.Although does not show on any diag test.

Re: fiat seciento hot start fault

Posted by Pete Mutlow <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT1569' width='330' height='300' border=0 style='border:none;'> on September 7, 2012, 6:48 pm, in reply to "Re: fiat seciento hot start fault"
Peter Mutlow

Hi Andy,

But would a faulty TDC result in injector pulsing?

Regards

Pete M

Re: fiat seciento hot start fault

Posted by stuart smith <iframe src='https://members4.boardhost.com/ukautotalk/info/user=ukat3259' width='330' height='300' border=0 style='border:none;'> on September 10, 2012, 6:38 am, in reply to "Re: fiat seciento hot start fault"
Stuart Smith

that was my thought pete

been through testing with the scope and the only thing i lose is spark

even energising the starter with the power probe does the same, first time nothing second time start, so that eliminates the ignition switch

also all relays bypassed and still the same

?????

Re: fiat seciento hot start fault

Posted by Mark Carter <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT1428' width='330' height='300' border=0 style='border:none;'> on September 10, 2012, 8:19 am, in reply to "Re: fiat seciento hot start fault"
Mark Carter

Whats the volt drop at the coil feed when cranking but not starting?

Mark

Modern cars, Its all wizardry and witchcraft

« Back to index

[ Garage Support ]