Question about Hummer Cars & Trucks
I have dtc P0335 and P0113. i checked my all wires and connectors, but dtc has didn't changed. So i replaced the engine control module and my hummer didn't start and engine didn't run. Then i replaced the old ECM, and it happened again. And there lot of dtc has detected. what should i do?
Code po335 refers to crankshaft position sensor(CKP)--circuit malfunction===causes wiring--CKP sensor --ECM
check the air gap and rotor security . Check for dirt in the air gap. Change CKP sensor.
code po113 refers to intake air temperature (IAT) sensor ---circuit malfunction===causes ---wiring open circuit /short circuit to positive ---wiring short to ground---ground wire defective--IAT sensor ---ECM
Posted on Mar 25, 2014
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Posted on Jan 02, 2017
SOURCE: Car not running on all cylinders
the first thing that comes to mind is ignition system faults. Are the spark plug wires connected properly, in the right firing order? Has work been done on the distributer, or the engine head, recently? Ignition timing can be 180 degrees out, and the engine will still run, sometimes. If it is not the ignition system, the next most likely culprit is the head gasket, which seals the head to the block of the engine. If this gasket is breached seriously, it can cause a cylinder(s) not to fire. Is there water in the oil, as evidenced by a thick, white foam? Is there oil in the coolant? Either of these are symptoms of a leaking head gasket.
Basically, one cylinder isnt firing for one of a number of reasons. The most common cause is an igntion fault. This will cause the engine to feel and sound "lumpy", and the power would be greatly reduced. The best way to find the cylinder which is responsible is quite simple but care must be taken. Firstly if you hate electric shocks as much as I do, find a proper pair of electricians insulated pliers, and even some decent rubber gloves if you can aswell. Start the engine, and one at a time, use the pliers to remove a lead from the top of one spark plug, if the engine almost stops, or gets worse in any way, it is not that piston which isnt firing. Repeat the proccess, one at a time, you will know which piston ISNT firing when you remove the plug lead, and there is no change in the engine sound, this is your defective cylinder. Its just a case then of looking at the condition of the spark plug and asessing the cause of the misfire before carrying out repairs. BEWARE:- THE LEADS WHICH CONNECT TO THE SPARK PLUGS CARRY SEVERAL THOUSANDS OF VOLTS - HENCE RUBBER GLOVES AND INSULATED PLIERS
Posted on Mar 05, 2009
Try first unplugging battery cable for ten minutuse, to reset ECM, and do a scan again, there are too many unrelated error codes at the same time
Posted on Oct 06, 2008
In the kit there are two sensor that look identical. The one for the crankshaft has a white paint mark on it near the bolt hole. Make sure that it is in the right location.
Posted on Jul 26, 2009
try to get a wiring diagram it sounds like you have a rubbed thru or corroded wire in the circuit. haynes manual at autozone $20.00. Some local larger libraries have the wiring books also.
Posted on Nov 16, 2010
Tips for a great answer:
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The identification of any stored diagnostic trouble codes (DTCs) and their status.
The use of the Diagnostic System Check will identify the correct procedure for diagnosing the system and where the procedure is located.
If you don't know about this stuff , I strongly suggest you take it to a repair shop ! Do you know about electrical circuits , relay's fuse's ? Do you know how to use a volt meter, read a wiring diagram. The first thing to do would be hook up a scan tool ,not a code reader. This system can set several DTC'S -diagnostic trouble codes.
DTC B2795 DTC C0563 DTC C0569 DTC C0626 DTC C0631 DTC C0660 DTC C0696 DTC C0702 DTC C0707 DTC C0711 DTC C0712 DTC C0713 DTC C0716 DTC C0717
You need to be able to test for B+ at different points in the wiring !
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