Doug's Cobalt SS SC

Hey guys on the way home from work tonight I noticed a brief power loss just for a split second on the freeway then I stopped at the gas station pumped gas & when I went to start my car it wouldn't turn over, I tried again this time giving it some gas & it started & idled fine however my CEL was on. I turned it off & tried to restart again to see if the issue was gone however again it wouldn't crank over even with giving it gas this time.

Keep in mind I have a fairly new starter battery alternator & fuel filter.

I used my scan gauge & the only trouble code that it's pulling is P0335 Crankshaft Position Sensor A Circuit Malfunction

I don't believe that I've ever replaced my crankshaft position sensor before.

What are your guys thoughts ?

Doug's Cobalt SS SC

Of course I have my car towed to the shop & it starts right up ! They can see the trouble code in the history but it's gone now,

He's started it over 30 times without issue

Would u guys still recommend that I replace the crankshaft position sensor ?

colodude18

iTrader: (4)

Sounds like it may be a wiring issue.
Check the wiring, this sensor is located on the front of the engine above the starter. There's a short (~6
inch) pig tail that plug into the sensor on one end and into the engine harness on the other. That would be easy to inspect and replace.

Picture of the location - dead center (with radiator removed):




With sensor removed:

double clutch

iTrader: (1)

Strange. Usually when the crank sensor is bad, the car will endlessly turn over, but never fire.

ECaulk

iTrader: (6)

Check all your grounds and battery connections before you replace the crankshaft position sensor.

ultrasilverSS06

Mine would randomly not start when the sensor started to go. I could go almost a week without issue and then it wouldn't turn over and would set a code. Had it replaced and now issue since.

ItalianJoe1

iTrader: (10)

They do fail, I had mine go bad on my first LSJ. Cheap enough and easy to replace, just put a new one in.

It's not unusual that the car started after a tow, the sensors usually crap out when hot, so once the car cools down they will often re-start and work for some time.

Doug's Cobalt SS SC

Thanks for all the help guys I'll check the wiring & replace the sensor

Doug's Cobalt SS SC

Just to follow up on this guys the wiring was fine however it was the crankshaft sensor that went out.

I replaced the sensor & she fires right up every time now !