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non starter.........jeez

F

fov

New member
hiya guys , just looking for some advice or help if possible , got a 85 944 , had it ten yrs. , was running great ,but ! suddenly stopped starting , been garaged for a while now , sooooo I've decided to get the old girl running again, right here goes , no spark at plugs , no tach bounce , no noise from fuel pump, ? however changed dme , coil , new leads and plugs , dizzy and rotor, maybe sensors next ? appreciate anything help........thank you
 
Sounds like one or both of sensors to me-disconnect them both-identify them 1st (bit of tape on 1 set)--spray connectors with WD40,smear with petroleum jelly-check terminals are clean put a slight set on the male ones with small pliers-wiggle the cables down to the sensors a little,replace & try again.Clarkes Garage gives you resistance values if you have a multimeter.generally this will get you going again until next time.
Seems that the cables break down with the heat ,etc but this worked for me for many months until I changed both sensors(a pig of a job if they won't come out because of growth of the aluminium canned sensors,coupled with the resistance of the sealing "O" rings.
 
http://www.youtube.com/watch?v=zeFOOcLSk60
This is a very good Youtube video on how to test the sensor resistance.
I had similar symptoms when my crank sensors went faulty.
 
hiya guys , thanks very much for the info, iam going to bite the bullet and renew the sensors, looks a rum job mind, will update soon , thanks again,,,,,
 
Would just uncouple and reconnect them 1st - it is often just the connectors that can be seen at the back of the head that are the problem - they do get hot there.
 
update, done another dme test same result , bypassed it , fuel pump can be heard , but when replaced nothing, disconnected and reconnected sensors , still no spark and fuel pump silent , is it sensors renewal time ? stuck, thanks for reply's too........
 
You can check whether it is a sensor problem without removing them - they can indeed be a swine, and it will be most annoying if it isn't the root cause of the no-start... Follow the procedure on Clarks Garage website. The lack of tacho bounce suggests that it is either the brain not getting a signal from the sensors, or the sensors being at fault...
 

ORIGINAL: fov

update, done another dme test same result , bypassed it , fuel pump can be heard , but when replaced nothing, disconnected and reconnected sensors , still no spark and fuel pump silent , is it sensors renewal time ? stuck, thanks for reply's too........
Click to expand...

dme relay bypass and fuel pump runs, dme relay in and it doesnt? will it start with the bypass in?
Tony
 
thanks for reply guys , wont start with relay in bypassed , no spark but fuel pump can be heard , so looks like ill go for new sensors, no tach bounce present, ill update when they have arrived and been fitted, thanks.
 
well well......what can I say....tried taking them ere f------ sensors out and one as snapped , what a chuffin nightmare, think they were welded in....jeez,,,,,,lol....
 
cheers mike and gang, finally got them out had to take housing off , worra cowing job that was , just waiting for new sensors , u never no I might get a spark ! ill let you all no....thanks for your help ,cheers
 
well guys a big help for all your help and input ,fitted some new sensors and guess what ? she took a deep breath and fired up , she sounds much sweeter than before , big thanks fov.....................
 
Great news and thanks for the thanks, if you know what I mean, its nice to be appreciated!

Love to see it and you at a somewhere.
 
well , I've just had a peep into its folder , and she was garaged for 5 years since the problem , cant believe that , but anyhow the old girl is kicking ....its put a massive smile on me face , so I've began the pampering , fuch wheels bling ed up on black body work , she's looking good , looks like a few rally's on the cards now , never no a might bump into some of you guys .........thanks again
 
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