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Dan, Technician
Category: Buick
Satisfied Customers: 24579
Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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1996 Buick Century: v6..Engine starts and runs fine..driven

Customer Question

1996 Buick Century 3100 V6 SFI dies after about 10 minutes. Engine starts and runs fine, but after about 10 minutes dies. This happens both if the car is sitting idle for those 10 minutes or is being driven.
Submitted: 6 years ago.
Category: Buick
Expert:  Dan replied 6 years ago.
Welcome to JustAnswer, my name is Dan and I'm here to help get your problem resolved. Ask follow up questions, thanks. Next time vehicle stalls see if it fires with starting fluid if so then you have a fuel related problem such as worn pump or shorting injector, you will need to check fuel pressure...If it doesnt fire then you know you have a spark problem such as a failed crankshaft position sensor.
Customer: replied 6 years ago.
Hi Dan,
We actually tried the starting fluid trick yesterday when we were troubleshooting and it didn't seem to make any difference. The mechanic who was working on it yesterday was originally thinking crankshaft position sensor, but ruled it out when we found that wire that seemed to be causing the problem. Is there any easy way of testing to see if it is the crankshaft position sensor before spending the money or labor to do the teardown required to replace it, or is it just a matter of having to replace it and see if that resolves the problem? The crankshaft position sensor in this is in-block and looks like it's a bit of a nightmare to swap out.
Expert:  Dan replied 6 years ago.
There is no easy way to test the crankshaft position sensor...Check ac voltage out put on 7x crank sensor and compare voltage when it will start to when it wont start...IF voltage is lower when it wont start replace. Here is a picture.