Born to be dizlegzic
Starts , runs nice , then Idles high , misses and coughs , then just stops........
interesting problem , which after searching leads me to believe the crank angle sensor is on its way out.
G/F was driving , car stopped in right hand lane ( sorry to all motorists who it inconvenienced ) got it started long enough to get off road and pull into side street.
Now car has cooled down , starts , but after not even a minute , picks idle up , then grows a miss ( not constant ) then dies...
Am i right in saying the crank angle sensor has finally dies?
Ute has almost 300,000km on it.
Its not what you know or who you know , its how well you can fake it
Yes,the symptoms you describe all point to the CAS(Crank Angle Sensor),and its most likely the culprit.Its the first thing Id change if my car did this.Try to only use a genuine holden CAS if you can.Ive had problems,and have seen a few problems with some of the cheaper brand sensors.
Born to be dizlegzic
just thought i'd update this. I have replaced the crank angle sensor with a brand new unit. whilst everytthing was out , noticed a water trail from the water pump , so thats on the to-do list this weekend.
Also , problem still exists.. still cutting out.
Will be replacing the coil packs and the thingy under them ( DFI? ) to see if this solves the problem.
Its not what you know or who you know , its how well you can fake it
operation HQ under way.
it seems more like a fuel pump on its way out. get a pressure check done while its folting, does it take ages to fire, my bet is on a fuel pump
Originally Posted by Adam Savage (mythbusters)
Born to be dizlegzic
not fuel pump , definitely.. its like flicking a switch on the ignition circuit on and off , engine light comes on momentarily and car keeps going.. then it'll just flick to the off position and you gotta pull over.
Its not what you know or who you know , its how well you can fake it
operation HQ under way.
well the only other thing it can be is the dfi moduel. has been know before to fail along with the cas
I'd be checking in order of this. 1] crank angle sensor!. 2] DFI module and coil pack.
See what happens once this is replaced.
Might also pay to do a diagnostic check and see what error codes it comes up with!
Cheers!
where is dfi module located??
Under the 3 ignition coils on the engine,the coils sit on top of the DFI module and connect to it.Theres a small bolt that holds the electrical connector to the DFI module as well.You have to undo this bolt to unplug the connector.The pins in this connector can get corroded which can cause problems,so its always worth checking out the pins etc in the connector and on the DFI module.
does it unbolt with the coil pack? the 3bolts underneath?
yeah,sure does.The 3 coil packs can be removed seperately from the DFI module as well though.Theres two 7 or 8 mm bolts holding each one on to the DFI module.
Born to be dizlegzic
thought i'd update this.
Changed CAS , still doing it , but not as bad.
Got a spare DFI and coils , but havent fitted..
Put 750 mls of metho into the tank ( thinking it may be water from crap fuel somewhere ) , and problem has slowly disappeared , it now doesnt miss cough or splutter at all......
So im now believing it was water in the tank causing the intermittant miss
( i have had coil packs - DFI modules - go before , and i was hesitant to believe it was the problem )
Its not what you know or who you know , its how well you can fake it
put a few more litres of metho in then before it stuff ya fuel system if it is water that is. pull ya fuel filter out, that will soon tell, there will be water in it.
pull fuel line off and run a few litres into a bucket and that will tell also.
but as soon as i read this thread title, i thought immediately, ECU. had several like that in my career.
a can of freeze spray is also handy.
I've had an issue like this on the F3. Engine light flickered a couple of times and the she stopped. Pulled over and tried to start, it would turn over but not fire. 10 min later she started. Happened 3 time before I got home. Replaced CAS but it happened again, couldn't even get around the block. While checking for loose wires/plugs while it was running I had my hand on the relays for balance and it cut out. I wriggled the DFI relay and the car cut out each time. I swapped out the relay with the headlight relay and it runs fine. Headlight are fine too. I reckon that the relay was not seated fully and the vibrations/road shocks were causing it to loose contact and the fuel cutting out.
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