Hey I have a 99 ecsb with a 5.3L and when I get in the truck for the first time the gas peddel is extremely hard to press. After stomping on it once or twice it frees up and I have no more problems with it. Any body else ever have this happen?
Hey I have a 99 ecsb with a 5.3L and when I get in the truck for the first time the gas peddel is extremely hard to press. After stomping on it once or twice it frees up and I have no more problems with it. Any body else ever have this happen?
99 excab, Nelson Tune, k&n FIPKII, pacesetter long tubes, No Cats, Dual Magnaflows with turndowns,
1/4: 15.66@88.1 Before Nelson, headers, and de-cating
Also 69 camaro SS 350 4speed, 13.81@103.6, Ls1 swap planned
Isolate the problem. Open the hood and operate it by hand and see if it's the throttle body first. You could be having a problem with the cable or the pedal assembly if it's not the TB.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
If the throttle cable/pedal linkage stuff if fine, it's probably just carbon build-up in the throttle body causing the butterfly plate to stick when closed. 'Higher' mileage engines (I've seen this on motors as low as 60,000) tend to display this build-up. All you need to do is remove the throttle body and clean the carbon out of it. I use a diluted mix of a strong alkaline multi purpose cleaner called Eimann Fabrik Hi-Intensity Cleaner and a small brass bristled brush to get the carbon off. I'm sure other multi purpose cleaners will do the job too. Fantastik is another strong alkaline cleaner that is easy to find. Service/repair manuals discourage the use of carb cleaners - maybe they can ruin the TB sensors.
If you're careful, you won't need to replace the gasket behind the throttle body. Your biggest headache will probably be getting at the clamps on the coolant hoses on the bottom of the throttle body.
1999 Chevrolet Silverado C1500 ECSB
LR4 4.8L/4L60E
Mine was pretty gunked up. It's nice and pretty now
2000 Chevy Silverado 2500 ECLB w/6.0 , 4L80E auto, 4.10 G80, K&N, Nelson Dyno Tune, 02 PCM STS TURBO , 44# injectors, IC ,HPTuner and 160* thermo 348 rwhp, 394 rwtq @ 5 psi
60'=2.241
1/8=9.352@77.39
1/4=14.40@ 96.67
My 99' used to do this too. I just sprayed it down with some throttle body cleaner and it worked fine then.
New Truck on it's way: '07 Classic GMC 2500HD DuraMax LBZ
03' Silverado ECSB 4x4 Z71 LQ9, TR230, Patriot LS6, 31lbs, Trailblazer stall, Corvette servo, Corsa Touring,
HP Tuners
SOLD - 99' Silverado ECSB 4x4 5.3, Edelbrock RPM, Nitto Terra Grapplers, Texas-Speed Tuned 02' PCM, LT1 fans
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