Question about Cars & Trucks
My Engine races 4000 RPM on startup without touching the accelerator. It will not stop until I shut off the engine.I just installed a new fuel pump today and this is a new issue.
Run fault codes and check for accelerator position sensor problem Check for MAP/MAF sensor faults.
Posted on Nov 17, 2013
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Posted on Jan 02, 2017
Probably not the ECM. Have it scanned. IF is is a 93 it means you have a 4.9 motor. They have a solenoid idle cotroll that could be malfuntioning, there could be a problem with the throttle position sensor, or maf, egr,mass air flow, You get the picture. The light is on to tell you what is happening. Most Autozones and Advances will scan it for free. Good luck.
Posted on Aug 16, 2009
MAKE SURE YOU DID REPLACE FUEL PUMP WITH NEW SOCK.THE OLD PUMP SOCK IN THE TANK STOPPED UP.CHECK FUEL PUMP FUSE AND RELAY.
Posted on Mar 25, 2011
The Engine and Automatic Transmission (not applicable to manual transmissions) in this vehicles drive train are fully electronically controlled by a computer called the PCM and TCM (Power Train Control Module, Transmission Control Module). When a problem like this or other drive-ability related problems occurs the computer stores a record of the problem (there are of course some exceptions to this, like the fuel pump, engine coolant temperature sensor and MAF sensor for instance) in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL A TRAINED TECHNICAIN HAS DIAGNOSED THE PROBLEM TO AVOID SPENDING YOUR HARD EARNED MONEY ON PARTS THAT MAY NOT CORRECT THE PROBLEM. Also always check fuel pressure for correct spec for your make and engine type.
Posted on Sep 07, 2012
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