stalling

[ab56452001]

Hi, in the last week my vn/s1 has konked out 3 times,like the motor just died as i was just idling along at 20/30 kmh !, stopped the car, put in neutral, fire her up and away we go !,otherwise runs o'k', has anybody got any ideas ?, thanks in advance...........

[immortality]

does it only happen when it's warm? i'd be looking at the CAS (crank angle sensor)

[ab56452001]

Thanks for reply , yes when its warmed up the revs seem to drop a bit ! ,but it was a cold day today and it still happened , otherwise car runs o'k' maybe the idle is a bit rough but its not new either, anyhow is it possible to service the c.a.s. without taking the h-balencer off, thanks..............

[immortality]

can't do the cas without removinghte balancer. have you tried cleaning the trottle body to help with the bad idle. i'd do all the basic stuff and rule it out before startingto spend money. when was the last time you changed the fuel filter and run some injector cleaner through the fuel system

[ab56452001]

thanks for answering, no i havent changed the fuel filter nor cleaned out the throttle body!, i had the intake manifold off about a year ago to put on new gaskets had a look then and it seemed alright, as for the fuel filter where is it ?, thanks.........

[ab56452001]

hi,just droped the kids off only drove 5 k's, everything o'k' till i slow down to walking speed then it died, so i stop and immediatley restart car ,all runs o'k' maybe revs a little low,i drive home and everytime i go around a corner or r-about i keep the revs up a little and get home no probs,does anybody know how to adjust the revs or is it a sensor thingy ?, thanks.........

[PaRaDoX]

sounds like a DFI moduel to me, everyone suspects the CAS first but its soo unfair,

i should know, ive blown 2x DFI moduels (once from normal wear and once from excessive heat)

now lucky for you this is easy to test, grab a spare DFI moduel (see if you can borrow one) drive round, and if it stalls then its not that = move one no $$ spent,

your suspects should be in this order

DFI (coil packs, the pack under the coils)
Crank Angle Sensor
ECU
Fuel Pump

lucky for you things like this progressivly get worse, sooo the sooner you can determine if its fuel/spark getting cut the sooner you will know whats causing it...

altho once i blew a inlet gasket and it caused random stalling hardcore

Fuel filter wont cause it to randomly stall then start up again but for $10 id do it anyway

[ab56452001]

Thanks, ive got a working coil pack from my mates wrecked vp, the one with 3 seperate coils also there is this thing between the coils and the base plate is this the dfi module ?, and i think the coil packs swap straight over ?, thanks.......

[immortality]

starting to sound like a IAC problem, if it's fine when it cold but low idle when warm and stallingit sounds like the revs are droppingto much, you need to remove the throttle body and clean it out with a can of carb cleaner, works a treat and then you need to reset the idle also, check this thread for instructions

VN - VR: IAC (Idle Air Control) How-To Clean

it it was the CAS it would die and not restart untill it cools a little (me bad, it was my first thought)

DFI and coils are a straight swap for s2 VN and VP/VR etc but slightly different to a s1 DFI/coil pack setup

[PaRaDoX]

Thanks, ive got a working coil pack from my mates wrecked vp, the one with 3 seperate coils also there is this thing between the coils and the base plate is this the dfi module ?, and i think the coil packs swap straight over ?, thanks.......

yeah thats the DFI moduel, its like a bunch of circits, soo test that first because its the most common thing and easiest to test

they're is 3x11mm bolts on the bottom, remove grounding strap, remove leads (take a photo of them before u do it so u can put them back on right) and they'res a bolt on the wiring its a 7mm, be careful not to damage the wiring

and it will come right off!

remember to reconnect the earth strap because this is VERY important

[ab56452001]

Thanks,i reckon ill go the throttle body/valve route, has anybody got pics of throttle body and valve to point out what i gotta do ,so i dont stuff it up , thanks again..............

[ab56452001]

By the way how do you test the dfi module, will a normal multimeter do ?.

[immortality]

By the way how do you test the dfi module, will a normal multimeter do ?.

can do, one terminal of each 3 pairs are common, the other on is best to test in turn, take one coil of, run engine and it should go from high to low as it triggers that coil. maybe easier with a test light unless you multimeter has a high/low function. if it flashes it works. i suppose you could test them also by having someone turn the engine over on th starter....

[ab56452001]

hi,just stood behind car when warmed and idling,sounds like a bad miss,not very noticable when cold, i suppose this accounts for the low idle/stall when travelling at slow speed !, i wonder what it could be ,mabe sh#t leads,cas ro@#ted, cai valve clogged, i had an xf efi falc once same prob we thought it was electrical then but it turned out to be some sort of idle sensor/soleniod, anybody got an idea where i should start ?, i dont whant to hand over dosh for someone else to have a guess i can do that myself !, thanks..........

[ab56452001]

Ran car again ,with bonnet open so i could hear/see whats going on ran real rough at first then seemed better as i gave the accelerator a yank,but even at about 3k-rpm there seemed to be an intermitant miss, any idea's ?, i thought if it was a crapy lead/plug it would get worse as rpm rise., thanks........

[Whitey]

had the same symptoms in my VN. Replaced CAS, coils, leads, plugs, cleaned throttle body, ect.. None of that helped.

Ended up being a faulty water temp sensor. The sensor was telling the computer that the car was still cold start, even when the engine was at full operating temp. This meant that the car drove perfect on cold start, but would overfuel at full operating temp and splutter and stall at low speeds and idle.

Replacement sensor was about $10.

Does your thermo fan kick in after idling on the spot for 5-10mins ?

[ab56452001]

hi,you could be right !, for that price ill give it a go, where is the sensor ?,what does it look like ? and where on the car is it ?, anyhow thanks .....

[14secvp]

if you have an s1 engine with the top radiator hose going round the back of the engine its in the back of the inlet manifold with a 2 wire plug on it the one with one wire is for the temp guage and the other 2 wire is inlet air temp in s2 engine with top hose to front under alternator

[ab56452001]

Thanks for all replies, i did the error code check this morning and came up all o' k', now i wonder if its plugs/leads ?, spose ill just have to fork out for them and see what happens.........

[14secvp]

the coolant sensor can be out of range and not set a code if its not too far out

[ab56452001]

Yer, tomorow im putin in new plugs/leads and ill clean out the aci valve, ill order a temp sender and hopefully that will do the trick !, thanks.........

[14secvp]

if the sensor is reading too low you normally get clouds of black smoke and they are hard too start when hot and dont keep running at idle very well my mate vn when we winaldled it with the laptop said coolant temp was 30 degrees changed sensor still the same was the ecu in the end