Okay first let me start off by saying Im new to this forum.. surfing the Net and found this board to be once of the best as far as tech info goes.. sooo my ISSUE..

Driving home yesterday Im on the interstate going about 70.. had just come out of a toll.. car jumps in front of me cutting me off.. he caught me in between shifts therefore I downshifted and hit the gas.. noticed my car backfired then shut off.. now it will turn over however will not start.. as far as i can tell there are no strange noises coming from engine (no clanking or knocking) when i try to start it.. checked fuses under hood and didnt see any blown..got it home changed the plugs because a guy on a different thread had this issue and ended up being fouled out plugs. I'm lost on this one. any suggestions?

 

Start with the basics, do you have fuel pressure? Do you have spark?

 

codes?

 

------------------------------------------------------------
How To Check DTC Codes

1) Turn on the ignition, but don't start the engine.
2) Press "Reset" button in order to clear any IPC display warning messages.
3) Press and hold "Options" and press "Fuel" 4 times within a 10 second period.
4) The computer will now scroll through all the modules, showing the error codes. Once it is done it will display "No More Codes" At any time you can scroll up and down to see each code by using the "Trip" and the "Options" buttons. Scroll to the component that has the code and press the "Gauges" button to view the code(s) numbers. To scroll through these code numbers, use the "Trip" and "Options" button again. Hold "Reset" to clear any codes. You can delete one code at time or all codes in any component.
5) Press the "E/M" button or shut off ignition key to end session

 

I'll check codes real quick.. brb

 

codes im getting are as follows.. 1064

 

there are very many however most are little stuff like tire pressure/window control.. seat control etc..

 

Could we trouble you to write them down and list them ?

 

2605, 1064, 432, 503,508,2593,2723,1096,,1221,1222,1283,1 236,1248,1255 and 1283

 

yesterday i pulled and there were a couple others which are not present at this time//.. PCM 0342c and 2723H

 

Hey ziddo52, you're holding out on us! Codes are from a particular module, list them. Each one has a Letter and 4 numbers, then 1 or 2 Letters, list them, ok?

 

Good luck Byronhunter....

 

sorry guys.. bare with me.. new to this !!!.. here are all the codes I pulled yesterday when the car died.. SCM B2605H, RFA U1000HC, U1255H, U1064, U1096 LDCM U1064H, U1096H RDCM B2283H, B2285H, U1064H and U1096H. PCM P0342C, IPC B1543H, SDM B0090H, U1016, U1040H and U1096H, BCM B2723H, LDCM B2282H and B2284H

 

DTC P0342
Circuit Description
The camshaft position (CMP) sensor works in conjunction with a 1X reluctor wheel on the camshaft. The powertrain control module (PCM) provides a 12-volt reference, a low reference, and a signal circuit to the CMP sensor.

The CMP sensor determines whether a cylinder is on a firing stroke or on an exhaust stroke. A magnet within the sensor produces a magnetic field. The reluctor wheel of the rotating camshaft interrupts this magnetic field. The sensor's internal circuitry detects this field and produces a signal which the PCM reads. The PCM uses this 1X signal in combination with the 24X signal of the crankshaft position (CKP) sensor. The PCM uses this information in order to determine the crankshaft position and the stroke. The PCM monitors for a loss of the CMP sensor signal.

As long as the PCM receives the CKP sensor 24X signal, the engine will start. The PCM can determine the top dead center for all of the cylinders just by using the CKP sensor 24X signal. The PCM uses the CMP sensor 1X signal in order to determine which stroke the cylinder at the top dead center is on. The PCM determines if the cylinder is on the firing stroke or on the exhaust stroke. The system attempts synchronization, and looks for an increase in the engine speed indicating that the engine started. If the PCM does not detect an increase in engine speed, the PCM assumes that the PCM is incorrectly synchronized to the exhaust stroke. The PCM synchronizes to the opposite cam position. A slightly longer cranking time may be a symptom of this condition.

Conditions for Running the DTC
The engine speed is less than 4000 RPM.

Action Taken When the DTC Sets
The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.
Conditions for Clearing the MIL/DTC
The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
Clear the MIL and the DTC with a scan tool.
Diagnostic Aids
The following conditions may cause this DTC to set:
Camshaft reluctor wheel damage
A sensor that is in contact with the reluctor wheel
For an intermittent conditions, refer to Intermittent Conditions .

 

Thanks alot... I Called a buddy who is a mechanic for Corvette's of Houston and he informed that he's 90% sure that the crankshaft sensor shorted out...Where is the crank shaft sensor located?

Thanks

 

Before you go replacing the Sensor,,,,,,,check this out and try it. Its FREE!

A bad crank shaft or cam sensor will not cause communications DTCs You have a bunch of U series DTCs. " U1255H, U1064, U1096 LDCM U1064H, U1096H

Clear ALL the DTCs and then try to crank the engine/start the car. If it wont crank,,,see what DTCs pop back up. Make sure that you list the C and or H suffix.

If you have Serial Data Buss failures, it can cause your issues.

BC

 

There are a number of things that can cause U series DTCs. Loss of serial data, loss or low power to those modules, both. See if you get more U series DTCs and we can go from there.

BC

 

Thanks,, I tried last night resetting all codes and no start.. I'll try to crank again this evening to see which codes pop up on retry... Thanks for you help... I was informed by a good friend that you were the guy to speak to regarding electrical issues as you were lots of help to him..

 

Okay,,, cleared the codes and tried to crank (no Luck).. here are the new codes

PCM-no Codes
TCS-no Codes
RTD-no Codes
BCM-no Codes
SDM-1 Code U1096H
IPC-no Codes
HVAC-no Codes
LDCM-1 code U1064H
RDCM-1 code U1064H
SCM-1 code B2605H
RFA-1 code U1064H

 

Interesting diagnosis considering you still don't know if you have spark and adequate fuel pressure.