Author |
Topic: crank postion sensor (Read 440 times) |
|
dogma
Full Member
THE IVE NOT GOT A CLUE MONSTER
 
Posts: 367
|
 |
crank postion sensor
« on: Jul 29th, 2007, 1:24pm » |
 Quote  Modify
|
Hi all, can anyone tell me. If a crank postion sensor has gone will this affect the starting of a car, if you have read my posts an electrician has found that mine is totally dead
many thanks
jim
|
|
 IP Logged |
LIKE MY CAR, WIDE WITH BIG TYRES
|
|
|
TiberiuS
Senior Member
Ex. 1996 2.3 Ultima - RIP P789 KHJ
Posts: 2257
|
|
Re: crank postion sensor
« Reply #2 on: Jul 29th, 2007, 10:29pm » |
Quote Modify
|
The crank sensor is like a coil of wire, should put out a pulse related to engine speed (normally a few hundred hz at idle). Without it the engine will crank but not fire...it should also set a trouble code. If it's dead, check the connector and the loom which leads up to it first, check the connector is making good contact. Sounds unlikely that the (EDIS?) is also faulty, more faults of the bad loom maybe? 
|
|
IP Logged |
Bruce - '07 Jaguar XKR coupe, '95 Jaguar XJ Sport 4.0, '82 Ford Capri 2.0 Ghia, '15 Honda Civic (sloooooww..)
|
|
|
dogma
Full Member
THE IVE NOT GOT A CLUE MONSTER
Posts: 367
|
|
Re: crank postion sensor
« Reply #3 on: Jul 30th, 2007, 1:39pm » |
Quote Modify
|
Hi mate, what is an EDIS that you refered to
|
|
IP Logged |
LIKE MY CAR, WIDE WITH BIG TYRES
|
|
|
TiberiuS
Senior Member
Ex. 1996 2.3 Ultima - RIP P789 KHJ
Posts: 2257
|
|
Re: crank postion sensor
« Reply #4 on: Jul 30th, 2007, 4:31pm » |
Quote Modify
|
I presume the amplifier you talk about is the EDIS module?
EDIS is the thing which fires the coils, a bit like the old ignition amplifiers...I've no idea where it is on the Scorpio though.
The coils should always be getting a 12v feed (negative switched as I remember), might be worth checking there's voltage at the coil connectors before you suspect anything else. You can unplug the crank sensor and check it with a multimeter, should be a thousand ohms or something, as long as you get an ohm reading (not a short or open circuit) it should be ok.
Hope this helps.
|
|
IP Logged |
Bruce - '07 Jaguar XKR coupe, '95 Jaguar XJ Sport 4.0, '82 Ford Capri 2.0 Ghia, '15 Honda Civic (sloooooww..)
|
|
|
dogma
Full Member
THE IVE NOT GOT A CLUE MONSTER
Posts: 367
|
|
Re: crank postion sensor
« Reply #5 on: Jul 30th, 2007, 4:41pm » |
Quote Modify
|
Thanks mate, the electricain tested both. the coils were fine but nothing from the CPS at all, probably why the car wasnt starting properly last week, got one on order and will fir tomorow, will see what happens then lol
jim
|
|
IP Logged |
LIKE MY CAR, WIDE WITH BIG TYRES
|
|
|
TiberiuS
Senior Member
Ex. 1996 2.3 Ultima - RIP P789 KHJ
Posts: 2257
|
|
Re: crank postion sensor
« Reply #6 on: Jul 30th, 2007, 5:19pm » |
Quote Modify
|
Jim, I could stick a scope on the sensor and see if it's really dead, could also do you an OBD scan and get some live data. But not sure when I'll be down your way next, might not be for 2 or 3 weeks
Dead crank sensor would give a no-start issue, hoping it is just that 
If I can help, just let me know
|
|
IP Logged |
Bruce - '07 Jaguar XKR coupe, '95 Jaguar XJ Sport 4.0, '82 Ford Capri 2.0 Ghia, '15 Honda Civic (sloooooww..)
|
|
|
dogma
Full Member
THE IVE NOT GOT A CLUE MONSTER
Posts: 367
|
|
Re: crank postion sensor
« Reply #7 on: Jul 31st, 2007, 10:41pm » |
Quote Modify
|
Hi mate, many thanks for your offer. Today i replaced the sensor and still wouldnt start. I replaced majority of the wiring from the box above the injectors to basicall everything that runs from that, the car now starts but immediately cuts out, starts now without any hesitation but cuts out streight away. If i give it a bit of trotlle it will run but coughs and missfires from the engine area but cuts out as soon as the throttle is taked off. Ive tried another idle valve from the inlet manifold i fitted recently but makes no difference. if the inlet manifold was not air tight could this affect the cars idle and the popping sounds
jim
|
|
IP Logged |
LIKE MY CAR, WIDE WITH BIG TYRES
|
|
|
|
Home
Help
Search
Members
Login
Reply
Send Topic
Print