strange problem-intermittent throttle problem

[stroked outlaw]

I have a 2002 f 350 and today while driving along when i let off the throttle and tried to step on it again there was no responce. It was dead, even if i pushed it to the floor, but if i let it up all the way and stepped down again, it would work normally. It also did it in park if I pressed it slowly. any ideas? maybe a pedal assy.? It seems to be getting worse. (sorry posted in the wrong spot this is a 7.3 question)

[obryap]

I have a 2004 F350 powerstroke with 55,000 miles. I have had that happen to me only twice in the last 20,000 miles, but i would like to know whats going on.

[rrrr]

I have an 04psd with the same problem. Tired the fuel filters, egr etc. read on another post a guy disconnected the electrical connection above the gas pedal and reconnected, took care of his problem. I will do mine tomorrow. Oh, i also have adjustable pedals.

[rankroddin250]

sounds like the throtle position sensor on the accelerator pedal... out trucks dont have any throtle cable just electronics so the sensor directly atatched to your accelerator pedal should be your problem

[NOVAJOE105]

Did the CEL come on when this was going on?? If not, it may still be a good idea to have it hooked up to a good scanner and check for any codes. You can also look at a live data stream of the TPS and see wht the voltage reading is. I am not sure what the spec is on the PSD but most veh start out at around .5-1.0v at idle and got to 4.5-5.0v at wide open throttle. as you go from idle to wide open throttle, go very slowly and watch to see that the voltage climbs at a steady rate and not real jumpy of has spots where it drops way off. If you have these, replace the sensor. Hope this helps a little. I spend most of my time working on gassers.

[rrrr]

Originally Posted by rankroddin250

sounds like the throtle position sensor on the accelerator pedal... out trucks dont have any throtle cable just electronics so the sensor directly atatched to your accelerator pedal should be your problem

I thought about the tps also. If this doesn't work then off to the dealer to see if I can't get them to install a new one.

[rrrr]

well had the same problem again. Not spitting out any codes and the problem is very intermittent. Does anyone know if the throttle position sensor, tps, is covered by the power train warranty? How much do they cost?

[rus462]

Is it stock?

[rus462]

Our company has a 2004 F250 that has 174000 miles on it Since Day ONE it has been a TURD. The dealership replaced harnesses, EGR valves, Filters, updated pcm and NOTHING has stopped the same problem you are describing. It will run great for 30,000 miles and then 3 times over a 30 mile stretch it will DUUURRRRRRRRRR and then come alive again. I have replaced FOUR (4) Motorcraft alternators in a 9 month period. But Ford does not think it is a ground issue. Yeah right. FORD has no idea what the problem is they just prey
you hit warranty and they don't have to answer your calls anymore

[rrrr]

Originally Posted by rrrr

well had the same problem again. Not spitting out any codes and the problem is very intermittent. Does anyone know if the throttle position sensor, tps, is covered by the power train warranty? How much do they cost?

Well I cleaned the connector on the throttle body and I havn't had the problem for 2 days of driving. We'll see what happens. Talked to my friend who was a Ford technician and he said to take it in and make sure that they have the latest ecm flash and that the service bulletins have been done, especially the chaffing wiring harness. Been on a business trip the last two weeks so no chance to take it in yet.