engine cranks but will not start....
engine cranks but will not start.... ok i drove my ss last thursday and friday and parked it with no problems...i went out yesterday to drive it to work and it would crank but not start..i checked for codes, fuel pressure and spark this morning. has no codes, 52 psi of fuel when cranking, but has no spark...locating for suggestion of what to look at first it ran flawless last time i drove it so im not understanding this recent turn of events....just as added info the car has full bolt ons w/ long tubes and a cam nothing has changed here in 2 years for modifications....thanks in advance
If all fuses are good and it has no spark it's a problem with the crank sensor. I've seen a few threads where people had trouble with the wire/connector on the crank sensor, so you should check the connector and wires good before you just replace the sensor.
On The Tree
Joined: Aug 2006
Posts: 122
Likes: 0
From: jacksonville NC
funny thing. same thing with me for the last couple of weeks. I couldnt get the motor to crank. Ended up breaking a rocker on the passenger side and a spring on the drivers side. Alot of guys said to check the crank and the camshaft positioning sensors. Also, how do you know you were getting no spark? Im assuming you pulled the plugs out one at a time and tried to turn over the engine right?
You did ground the plug? Sounds like you are going to need to find out if your crank sensor is bad or not. If you can get a wiring diagram and find out what wires are your 5 volt reference and ground and get a volt meter and see if you have a 5 volt signal. You have to do all this while back probing the wires on the connector you just can't unplug it. It is also a 5 volt ac signal.
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Staging Lane
Joined: Oct 2008
Posts: 70
Likes: 0
From: DALLAS TX
bad crank sensor would throw a code i would think. plus it would go into limp home. did you check all cylinders for spark? each coil has its own ignition control module comanded on by pcm. if its not getting spark its because the pcm wont give it any. see if you can get ahold of a tech 2 and look at engine data. see if anything is abnormal.
no i checked one cylinder for spark and do i really have to ground the plug that i put in the end of the wire cause if so i may not have grounded it i cant remember if it was touching the strut tower bolt or not
I had this intermittent issue a couple of months ago where the car would randomly die and not restart, or sputter while driving. The dealer replaced the crank sensor but that didn't fix the problem. We stumbled upon a suggestion from a tech at another dealer to replace the ignition relay and (knock on wood) the problem hasn't returned.
