The Car is randomly shutting off

[TURBOPOWERED68]

It has happened after the car was warm and driven for a while and On or Off throttle
Every time the car has turned off it has started right back up.
BTW no codes or any type of sputtering it just shuts off.
the only thing that looked out of whack was the IAC # 110, 120, 99. I reset it and it looks like that is back to normal.

 

[buickGN3:16]

check the back of the alternator wire & the chip to make its not partially loose. just some thought

 

[VIN7]

I had that exact problem, turned out to be my crank sensor. Replaced it and hasn't happened since (5+ years).

 

[Nigel]

I agree, start with the crank sensor, crank sensor bracket and wiring. Power Logger would be useful for tracking this down if it is not the crank sensor.

 

[T- Type Tim]

I just had this problem in my chevy truck ( 92) read thru plenty of forums about a random stall when warmed up , the unanimous fix was to replace the coolant sensor. Replaced mine and no more random stall.
Again this was on a 92 chevy z71. Worth a shot to check it out.

 

[hiboom]

All so check fusible links at starter


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[bpman1234]

damn this just started to happen to me car was running great till last weak runs great till it gets to operating temp then it start to hesitate and cut off .after it cools off it runs good again till it gets hot .help.thinking it might be my maf .cause while i crank it the gen2 saids maf tunning but not sure ,.

 

[TURBOPOWERED68]

All so check fusible links at starter


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no fusible links.

damn this just started to happen to me car was running great till last weak runs great till it gets to operating temp then it start to hesitate and cut off .after it cools off it runs good again till it gets hot .help.thinking it might be my maf .cause while i crank it the gen2 saids maf tunning but not sure ,.

No hesitation at all it just dies like if someone turned the key off.
Then it starts right up.

 

[bpman1234]

check the plug to the module take it off and put it back on not to tight .iam gonna put my stock maf on and if that dont work gonna do the crank sensor.thanks i will let you know.

 

[TURBOPOWERED68]

check the plug to the module take it off and put it back on not to tight .iam gonna put my stock maf on and if that dont work gonna do the crank sensor.thanks i will let you know.

will do

BTW i ordered a new crank sensor today

 

[bpman1234]

ok let us know how it turns out .

 

[Fast4Ward]

Welcome to the tb world. Forget one thing ...check everything. U got 10 posts above with 10 different things ..lol. These cars can kick ur ass and then some. Gl

 

[bison]

With a log it's usually easy to see a crank sensor fail. The rpm will drop straight down when it craps out.


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[Lil Truck]

With a log it's usually easy to see a crank sensor fail. The rpm will drop straight down when it craps out.


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Will all the log sensors drop strait down? I had this happen 2 time in 1 night and never again ....... actually the car regained power on its own all log sensors for a fraction of a second went to zero evern voltage. Checked everything out and decide I had a loose USB connecion to the power logger? I have found that if you hot plug / unplug (car running) the USB on the Power logger the car will die, no code.

Crank sensor is 1 month old.

 

[bpman1234]

ok i tried 3 different mafs ls1 .4''mega and finally stock and they all did the same thing after getting hot it stalled since i already change the fp.coil and module checked the cam sensor change spark plugs and wires change injecters and chip put annew hot wire kit in like i said the car was running great then it started to stall like stated ubove . guess what it happen to be the fpr one of 2 things that i didnt change fpr being 1 and the crank sensor being the other i guess i will lookout for that to be the next thing to go lol check everything like fast4word said. it always helps to have spares of parts for{ trouble changing}haha.car is running great again .thanks for everyone input .yo turbopowerd might want to check that fpr .

 

[TURBOPOWERED68]

fast forward a few months and its back,
Back then i replaced the crank sensor and life was good,, this time around i replaced the crank sensor and found the fuel fuse blown what gives?

 

[earlbrown]

Check ever square inch of wiring harness for a chafed spot.

 

[Ttype6]

check the plug to the module take it off and put it back on not to tight .iam gonna put my stock maf on and if that dont work gonna do the crank sensor.thanks i will let you know.

Do you have a Translator Plus?

 

[TURBOPOWERED68]

Check ever square inch of wiring harness for a chafed spot.

I was afraid of that.
I'll start with individual systems
1- Fuel
2- ?????