Tried to fire up my cossie today. Cranks but wont fire. Took the lead of the dizzy that leads to the coil and held it near the slam panel. Got 1 spark each time i cranked it and then no spark

Have been told to get a new crank position sensor and phase sensor, which i will do. Has anyone else had these symptoms before, and if so what was the cure?

 

i had a loose wire on the ignition module one that caused exactly the same symptoms

 

Is that the amp on the inner passenger wing?

 

yep

 

so did you have to change the wiring of just wiggle it a bit to make sure it had a good connection?

 

just pushed the wire back in

 

ok. Thanks for your help. will give that a try.

Funny thing is, it started last week 1st time and i didnt drive it any where. Just let it warm up and then switched her off. Cant see how anything has changed just from being stationery

 

Had the same troubles once, problem was my injectors -> they were full with dirt.

 

has the fuel gone off? is the pump working?

 

pump is working. The problem seems to lay with just 1 spark from the coil each time you turn the key.

 

may sound funny but check that ALL 4 of the lugs are still on the bottom pulley!

 

i did check that and all 4 were there. So it seems like changinf the crank position switch isnt such a bad idea?

 

Ok,

ive changed the crank position sensor for one that i know was working. Still get only 1 spark each time you crank it and then nothing. am getting fuel no problem. Would a faulty map sensor cause this problem?

 

ive just left me dads mate. thanks though. Have been on the phone to Mark for most of the morning. He has told me to change map sensor, ignition amp and coil. Am borrowing Warrens map sensor etc tonight. If it doesnt fire up after that then god knows.

 

you always get one spark when you turn the ignition on , something isnt giving the pulse feed to the coil ,as you have changed the tdc sensor i would next check the amp ,on the inner wing. this amplifies the signal from the ecu into a signal big enough for the coil to operate.

 

ahhhh, righty o. thanks for that. You are correct, i do get a spark when i switch the ignition on. And then no more. Will be swapping out the amp on the inner wing later this evening. What about map sensor? Does that have any bearing on my problem do you think?

Cheers

Rich

 

if you think its map sensor ,unplug it and try it ,they dont run well but they do start without a map plugged in , thats how i found mine was faulty when it wouldnt start when it got wet.

 

lol

Im not too hot on the technical side of things, but how does the map sensor have an input into the coil? sorry if i sound dense but wiring etc isnt my thing

 

im not overly sure, boost alters the spark map ,so if the map sensor is faulty it could affect it........

Have you washed the car,or topped the header tank up , cos thats how mine packed up, was fine i washed it and wouldnt start after , i just unplugged the map and it started up ,

Took the sensor off and took it apart and it was full of water ,shorted out......replaced it and was fine.

 

check the phase sensor(inside the dissy cap)2 wires condition also!

 

Jtech and Alvyn,

I replaced the exhaust housing on my turbo 2 weeks ago, bolted the turbo back on and it fired up fine. Went back to the car last friday and this problem had arisen. The car hasnt moved or anything like that. Havent cleaned the car but it has been raining here.

Checked the wired on the phase sensor. looks fine. no corrosion or splits etc.

Took the fuel rail off with injectors plugged in and put ends of injectors into plastic cups. cranked it over and got feul in 3 of the cups. The 1st injector nearest the cam belt was dry Cant for the life of me work out why though.

But back to the main problem of no spark. Have def got 4 lugs on the bottom pulley. Am going to try a different map sensor 1st tonight to see what happens. Then the ingniton amp and then the coil, but i am assuming that if i get 1 spark when i switch igniton on that the coil is ok?

 

yes i would say the coil is working as it gave a spark, when turning on ign this is normal,
next i would unplug the map sensor and try that, also this controls fuel so may be related to the dry injector but god knows how?
then ign amp , could be faulty they can pack up just like that without warning.

 

Thanks for your help. Will report back later with my findings. I hope its not the ECU that is causing problems though

 

wouldnt have thought so mate ,itl be a sensor im sure........ i reckon ul unplug the map and itl start , then you can swear , and move the thing under the dash so it doesnt get wet.

Let me know if i can be of anymore help mate.

 

under the dash with the map sensor. Never heard of that before, but does sound logical. Am more pissed off that i havent even driven the thing and it still manages to mess up lol.

 

got a ecu if you need one l8 p8 to try

 

Paul,

cheers mate. Once i have tried these other bits tonight then ECU will be the next thing to try.

 

my ecu was faulty was like a buzzing from a injector

 

Problem sorted.

Changed map sensor and all is now fine

Thankyou all for your help

 

 

im a clever bastard!!!!!!!!!!!!! i was right foe once!

 

Cheers Jtech

 

was just about to say Map Sensor fault!

glad its sorted

 

Cheers Dave mate.

Basically if anyones cossie has no spark and number 1 spark plug/injector is dry then change the map sensor 1st before anything else

 

Will we be seeing it at weekend then ?

 

yeah rich, you bringing it to central?

come over for a line of coke mate


(joke pal )

 

Not to central day no. Wont be taxed and i have a new exhaust housing on my turbo now so need a setup, am wiating for Shead to source a cam for me and then its systems go.

Dave- i'll have a can of coke instead pal

 

fookin hell.. usually a line or two does me.. not a whole fooking can!

may see you there mate

 

lol,

I will be there, am booked into the hotel for the piss up. Are you? Just be coming in the mrs car instead of the cossie