A buddy of mines just picked up a gs430 last weeek, so we was riding around today everything was good and smooth as suppost to be, but out of nowhere his engine shuts off, so we pull over try to start it back up and it started back up like normal and drove home like nothing happened. I found this wierd as hell and also as a Gs owner myself I would like to know has anybody had this freak issue before?

 

mines did the same thing last week. check the MAF and the battery. if its dirty clean it. aight

 

Ditto!
Happened to me when I first got my GS as well.
Turned out to be a bad terminal connection. Battery disconnected and bang. dies no the highway.

 

It can be the battery even if all the power was on when the engine just shut off? I was thinking the maf

 

Same thing happened on my 2001, the entire engine shut off and all the power we off, Had a dirty MAF and also I needed a new battery...it was a double whammy

 

happend to me once.... i put the car in park and sat in the car at a beach and when i put the car back in drive i noticed the car was off.. i never found out what caused it but it never happened again. but good luck in your search.

 

Dirty MAF, dirty T/B's and failing IAC's can cause a stall condition

 

What is a IAC and where is it located???

 

Well I never had my car actually turn off on me while I was driving but im having issues with it starting. So like I got a new battery and went to check if it was the alternator and they said it might be that but I was also told it could be my iginition and somthing about the laser from my key.. idk... So ya but sometimes it will start up fine and other times I have to keep trying until it starts..

 

These cars dont have IAC's, but your issue is most likely a dirty T/B.

 

brought from the dead .............. any others with similar issues ......... My car is not staying on it starts , just replaced the battery was not holding charge , and now it starts and then goes to 1k rmp then dies ,

 

over and over again ........ going to search on cleaning tb next

 

well cleaned MAf and TB and still no love ..................

 

Have you check the alternator?

 

would at least kill the batt after running , fuel issue i think , does the fuel pump make priming noise inside the car as well as the outside ?