svx dies after running for a few mins what to try?

[jrturbosvx]

hi im having a problem with my 94 svx as its shutting off after a few mins running when i have changed alternators,changed in 5 diff maf sensors,along with a few other parts over the last 2 days.it will die but start back up with no problems until it starts running real choppy and then quits.i have discussed this problem with svxess aka john who has taken alot of time to try to help me with this problem.any suggestions of what i should replace tommorow. ihave a complete parts car to take parts off. thanks josh

[SoCal LS-L]

Try the crank and cam sensors next.... heat makes the magnetic tips lose functionality... so if they are weak already.....

[svxcess]

Originally Posted by jrturbosvx

Hi,

I'm having a problem with my 94 svx as its shutting off after a few minutes running. I have changed alternators, changed in 5 different MAF sensors, along with a few other parts over the last 2 days.

It will die, but start back up with no problems, until it starts running real choppy and then quits. I have discussed this problem with svxcess (aka John) who has taken a lot of time to try to help me with this problem.

Any suggestions of what I should replace tommorow? I have a complete parts car to take parts from.

thanks, Josh

Originally Posted by SoCal LS-L

Try the crank and cam sensors next. Heat makes the magnetic tips lose functionality... so if they are weak already...

I was leaning towards checking the cam sensor also. At first I thought it could be a bad ignition switch, as I thought the car just died. Its almost like he was turning off the key. But Josh says it it seems to run erratically and choppy just before dying. I was also leaning towards a MAF as the culprit, but he said he changed out 5 of them, and surely they all can't be bad.

The FSM troubleshooting charts suggests the cam sensor if the car starts and then stalls (but doesn't say if the stall is immediate)

I thought a bad crank sensor would keep the car from starting at all.


.

[oab_au]

I would agree that it sounds like the position sensors. Swap the three of them see how it is then.

Harvey.

[jrturbosvx]

ok so ill replace the cam sensor and crank sensor tommorow morning so i can rule out those or possibly fix my problem i hope.this svx has never given me a problem so it figures it happens right before reading meet.anything else i should try to change tommorow? i need to get my svx fixed asap so any suggestions would be nice.thanks

[Trevor]

Originally Posted by oab_au

I would agree that it sounds like the position sensors. Swap the three of them see how it is then.

Harvey.

The correct procedure is to swap one at a time. Then you will know which one of three is faulty. Otherwise you will wind up with three sensors all, suspect and useless.

[jrturbosvx]

what are the 3 sensors?cam,crank and what other sensor?forgot to write no check engine light so i dont know exactly where to go if these sensors dont help.thanks guys