destey Posted April 16, 2008 Report Share Posted April 16, 2008 I've got the accelerator sensor instead of the cable on a 5spd, does anyone else experience this: 1. Pedal travels 1/5 of the way before the motor responds, then its slugish until about 2/5. Then the entire engine power adjustment is in the next tiny bit. 2. If I hit bumps, i bounce up and down in the seat pushing the accelerator up and down, bucking the vehicle. I've never owned an automatic vehicle, so I've "been around the block" with shifting... Is it clogged injectors, or is this just how GM made these things? If that's the case, how can I fix it, its driving me nuts! Thx! Quote Link to comment Share on other sites More sharing options...
drclaw5 Posted April 16, 2008 Report Share Posted April 16, 2008 do you have a truck? what are the specs? motor? etc. Quote Link to comment Share on other sites More sharing options...
destey Posted April 16, 2008 Author Report Share Posted April 16, 2008 do you have a truck? what are the specs? motor? etc. Not an SS Its a 2003 Silverado 2500 with the LQ4. Quote Link to comment Share on other sites More sharing options...
Turbocoop Posted April 16, 2008 Report Share Posted April 16, 2008 sounds like the pedal needs to be adjusted, if you can. Ive never messed with one Quote Link to comment Share on other sites More sharing options...
Fireman31 Posted April 16, 2008 Report Share Posted April 16, 2008 The throttle is electronic I believe, and the pedal/controller are one entire assembly.....there is a good chance that it may have to be replaced. Quote Link to comment Share on other sites More sharing options...
destey Posted April 16, 2008 Author Report Share Posted April 16, 2008 sounds like the pedal needs to be adjusted, if you can. Ive never messed with one I'll see what I can do. Thanks!! Quote Link to comment Share on other sites More sharing options...
destey Posted April 16, 2008 Author Report Share Posted April 16, 2008 The throttle is electronic I believe, and the pedal/controller are one entire assembly.....there is a good chance that it may have to be replaced. I did a search and it seems quite a few people experience something similar. Would this be a good check: backprobe the connector and see if the voltage or resistance response is linear? Quote Link to comment Share on other sites More sharing options...
desrtrat Posted April 16, 2008 Report Share Posted April 16, 2008 the pedal acts like a rheostat don't know if the connection inside can be cleaned. as for the bouncing, if you remove the pedal assembly, look behind it and there is a spring that holds the pedal up. you can remove that spring and replace it with a little stiffer one. you don't need much to correct the ease in which the pedal moves.. Quote Link to comment Share on other sites More sharing options...
rholbrook Posted April 17, 2008 Report Share Posted April 17, 2008 try cleaning ur throttle body... i get similar problems with customers almost every day, a can of good brake clean and a soft brush. just try not to use too much cleaner and wipe off the residue when you r done not positive if this is ur problem but it may be... good luck with ur truck Quote Link to comment Share on other sites More sharing options...
destey Posted April 17, 2008 Author Report Share Posted April 17, 2008 try cleaning ur throttle body... I just installed a CAI last night and the throttle body did have some gunk in it. I think you might be on to something here! I'll keep the thread updated on the progress. Thanks much! Quote Link to comment Share on other sites More sharing options...
destey Posted April 19, 2008 Author Report Share Posted April 19, 2008 There was some gunk in the throttle body, but after it was cleaned out the problem continues. Anyone have ohm or voltage numbers on what the accelerator position sensor should be spitting out. My haynes manual just says to take it to a dealer or certified repair shop for this problem (they tell you how to rebuild the motor, but probing a sensor is something for a shop ) Is anyone thinking it could be the injectors? Thanks for replying, Derek Quote Link to comment Share on other sites More sharing options...
wody Posted April 19, 2008 Report Share Posted April 19, 2008 throttle position sensor Quote Link to comment Share on other sites More sharing options...
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