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Electrical Problems

Chegs

By Chegs,
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Chegs Contributor

Chegs

Posted
Posted

Hey guys, i have been having an intermittent problem with my r33 gtst for a few weeks now. when driving along, it just stops firing on all cylinders and dies, but picks up again before it stalls. i have just replaced the coils and plugs, so i think it may be the crank sensor. has anyone ever experienced a similar problem before?? its really bugging me and any insight as to what may be wrong would be greatly appreciated :laugh:

Thanks, Bill

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kiz_baby Apprentice

kiz_baby

Posted
Posted

I too am having the same problem. My car is an R33 S2 GTST Automatic. It has been stalling while idling at the lights and in some cases takes a while to start after stalling. I have also noticed revs dropping significantly while driving and the accellerator feeling sticky when this happens. Stalled as i was taking off from the lights last night.

Car has been with the mechanics twice who have still not figured out the problem. First time in, they changed the oxy sensor which made no difference at all, 2nd time in they found a fault with the wiring harness for the air flow meter and fixed. Car ran beautifully after this for 3 to 4 hours before stalling again in idle and then 30 mins later, stalling on take off from the lights as mentioned.

My mate was with me and thinks but is not sure that it could be the crank angle sensor and from reading topic "Sticky: Missfire Boost.." it seems other people have had this problem and was solved by changing the crank angle sensor.

My advice, if it's only just started to happen, get it looked at quickly because it gets worse quick.

mjones Collaborator

mjones

Posted
Posted
I too am having the same problem. My car is an R33 S2 GTST Automatic. It has been stalling while idling at the lights and in some cases takes a while to start after stalling. I have also noticed revs dropping significantly while driving and the accellerator feeling sticky when this happens. Stalled as i was taking off from the lights last night.

Car has been with the mechanics twice who have still not figured out the problem. First time in, they changed the oxy sensor which made no difference at all, 2nd time in they found a fault with the wiring harness for the air flow meter and fixed. Car ran beautifully after this for 3 to 4 hours before stalling again in idle and then 30 mins later, stalling on take off from the lights as mentioned.

My mate was with me and thinks but is not sure that it could be the crank angle sensor and from reading topic "Sticky: Missfire Boost.." it seems other people have had this problem and was solved by changing the crank angle sensor.

My advice, if it's only just started to happen, get it looked at quickly because it gets worse quick.

i'd change air flow meters over!!

Godzilla32 Veteran

Godzilla32

Posted
Posted

LOL an engine will run without an oxygen sensor signal (though not as economically) so there is no way that would fix a stalling problem.

A missfire is not the same as what your saying you have. So i wouldnt go on anything said in the missfire thread. A common oversight people seem to have is if they have the same symptoms as another person thay automatically think its the same fault! Never assume this as 90% of the time it wont help you.

Deren

kiz_baby Apprentice

kiz_baby

Posted
Posted
LOL an engine will run without an oxygen sensor signal (though not as economically) so there is no way that would fix a stalling problem.

A missfire is not the same as what your saying you have. So i wouldnt go on anything said in the missfire thread. A common oversight people seem to have is if they have the same symptoms as another person thay automatically think its the same fault! Never assume this as 90% of the time it wont help you.

Deren

Car was originally missfiring as well and revs dropping significantly while in motion. Now I just need to work on the stalling problem. I am also running .95 - 1.02 bar. I will check the coils but I would be very appreciative if anyone has any ideas.

kiz_baby Apprentice

kiz_baby

Posted
Posted

Thanks guys! Changed airflow meters over and so far running like a dream and better than before. I had taken this car to the mechanics 3 times before they finally said it was the AFM.

I do not recommend anyone going to Sumo Performance in Nunawading, Vic (Kamikaze's mechanics) as they had the car for over 4 weeks and couldn't nail the problem. I posted my problem here and got a response same day which was accurate and correct. Thanks again to all.

Chegs Contributor

Chegs

Posted
  • Author
Posted

Hi everybody, thanks for the help. i took the plug out of my afm, resoldered it and car goes like a dream. I too thought it was the crank angle sensor, but had the same symptoms of stalling and funny idle. I replaced all the coils and plugs but it would just cut all power for a few seconds and then come good again. instead of changing the afm, pull the plug off, unscrew the plug body on the afm and prise off the top cover. resolder the 5? joints and reglue on top cover and screw housing back in, worked fine for me and cost nuthin.

Thanks.

kiz_baby Apprentice

kiz_baby

Posted
Posted
Hi everybody, thanks for the help. i took the plug out of my afm, resoldered it and car goes like a dream. I too thought it was the crank angle sensor, but had the same symptoms of stalling and funny idle. I replaced all the coils and plugs but it would just cut all power for a few seconds and then come good again. instead of changing the afm, pull the plug off, unscrew the plug body on the afm and prise off the top cover. resolder the 5? joints and reglue on top cover and screw housing back in, worked fine for me and cost nuthin.

Thanks.

Sounds like we may have had very similar problems. My wiring harness had already been fixed, plugged my AFM into another car and found it to be no good.

Chegs Contributor

Chegs

Posted
  • Author
Posted

I found through a bit of searching on sau that cars with pods seem to have the afm break quite frequently due to vibration. when i removed my plug, the solder joints were not even joining, so much so that i just pulled the plug out of the afm. Its a bit fiddly to get that silicon off the afm, but its cheap and easy. ive since realised that is why my car has been running horribly for months. If you do a search on air flow meters you will turn up something helpful.

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