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Unknown Stalling Issue

GMan

By GMan,
in Engines & Forced Induction

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GMan Proficient

GMan

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Posted

My car is in serious trouble at the moment. Seems to have more bad days then good. I had just spent a whole day at the mechanics helping them to solve the problem of my car. Almost everything was ruled out today. Basically when you start the car its fine, but when you put it into drive (its an auto) it splutters and then stalls.

What is happening is that as soon as drive is selected, 3 cylinders drop and then the tcs butterfly closes. The TCS module was suspected but tested it with another unit and it was still the same. The regular checks of coil packs, injectors, fuel pump, fuel flow, plugs, injectors etc was all checked and are all fine. Diagnostic comp was connected and nothing comes up.

My car has been missing in action for about 1 month now and would like to have it back by christmas.

PLEASE HELP ME!!

advise and opinions are all appreciated

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Spunky Munky Grand Master

Spunky Munky

Posted
Posted

You know what buddy, I drive the same car as you and I'm also a proud Auto owner too... guess what, the issue may be issue then you think...

if you're running an atmospheric BOV - which means it vents 100% into the atmospher without plumbing back then your car will stall. R33's and most other nissans have airflow metres that directly works with the engine ECU... if the ECU detects a change in airflow it will also affect the mixtures of fuel, air, volts etc and hence will cause your car to stall as a precaution mechanism.

Just get a stock blow off valve put back on - plumb it all back.... reset the ECU (easiest why is by unplugging the battery for 2 minutes then replug) and then turn the car on, let it idle for 10 minutes... then drive off and it should be fixed... simple, I know... I was shitting myself too... but this is the quickest fix.

Good luck - if it's not this and your mechanic's given up - then Bob's your uncle.

zertek Proficient

zertek

Posted
Posted

atmospheric bov is the most common cause... but judging by all the things you have checked, i'm guessing your smart enough to know about this. double check all your vac lines. Also im not sure but could the auto trans computer have anything to do with this? hope you solve the issue before christmas mate...

GMan Proficient

GMan

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Posted

thanks for the input everyone. but the bov was already considered and its not that. really weird....

but i think i have singled out the problem but just waiting for mechanics confirmation. i think i had also found the weird error codes which i have posted in a previous topic.

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