Question about Chevrolet Cars & Trucks
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Posted on Jan 02, 2017
SOURCE: trouble code P1744
Torque Converter Clutch System Stuck in Off Position. I would clear that one and see if it comes back. You would be ok to get a smog test done with this code. Its a transmission code. If it does come back I would take it to a transmission shop and have it checked out further. Thanks for using FixYa!
Posted on Nov 18, 2008
SOURCE: 2004 Chevy Silverado HD 2500
On many engines with distributor less ignition systems and sequential fuel injection, a camshaft position sensor is used to keep the engine's control module informed about the relative position of the crankshaft. By monitoring cam position (which allows the control module to determine when the intake and exhaust valves are opening and closing), the control module can use the cam position sensor's input along with that from the crankshaft position sensor to determine which cylinder in the engine's firing sequence is approaching top dead center. This information is then used by the engine control module to synchronize the pulsing of sequential fuel injectors so they match the firing order of the engine. On some applications, input from the camshaft position sensor is also required for ignition timing.
The camshaft position sensor may be magnetic or Hall effect, and mounted on the timing cover over the camshaft gear, on the end of the cylinder head in an overhead cam application, or in a special housing that replaces the distributor (in the case of some of the GM applications). Operation and diagnosis is essentially the same as that for a crankshaft position sensor.
Re check the wire harness and the sensor installation to the camshaft sensor in Bank #1 which is where the #1 cylinder is. Good luck and hope this adds some light to you question, keep me posted and be glad to help.
Posted on Jun 02, 2009
The reason is they are pressed in and you have to press them out with a tool and some have a C clip that has to be removed you can go to schucks or autozone to rent the tool to press out and it has to be pressed back in.
Posted on Jul 25, 2009
P1121 means that the TP (throttle position sensor) does not match what the MAF (mass air flow sensor) reads
the two leading causes for this are the TP or the PCM (powertrain control module)
you will need a professional scan tool to diagnose in detail
Posted on Mar 27, 2010
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