Gas pedal "stalling"

[BioStroker]

So I got a DP Tuner about a month back, and have had an issue with my gas pedal "stalling." What happens is when I'm climbing (it has happened on flat ground as well) my gas pedal won't have any response. I can feather it all the way to the floor and back off of it. As soon as I let off the pedal completely and then re-apply pressure it works just fine. I feel like this is borderline dangerous as it has happened when I'm passing somebody uphill. It has Jody stumped. He gave me a new tune, but that didn't work either. He thought it was maybe the IPR or ICP-maybe even the throttle control sensor. I don't want to just start throwing parts at the problem and hope I get it right. Ultimately I need to get AutoEnginuity, but can't afford it right now. Any suggestions?

[Hoytster]

Just an idea......

I had the same problem after installing my DP Tuner. Turned out the chip was coming slighting unseated from the PCM during an uphill climb or a full throttle pass. Reason this was happening was because I didn't cut out enough of the plastic PCM holder to allow the chip to clear it properly. One side of the chip was catching on plastic holder and slowly working the opposite side loose. Then gravity or my right foot would cause it to unseat enough to break contact. Just something to think of.

[BioStroker]

Originally Posted by Hoytster

Just an idea......

I had the same problem after installing my DP Tuner. Turned out the chip was coming slighting unseated from the PCM during an uphill climb or a full throttle pass. Reason this was happening was because I didn't cut out enough of the plastic PCM holder to allow the chip to clear it properly. One side of the chip was catching on plastic holder and slowly working the opposite side loose. Then gravity or my right foot would cause it to unseat enough to break contact. Just something to think of.

Thanks-I'll give that a try. I didn't cut any of the plastic PCM housing, and it was a squeeze to get it in, so I'll do some trimming and see if that works.

[BioStroker]

I gave that a try-I cut out a hole in the plastic PCM housing for the tuner cables to come out, but still no luck. Any other ideas out there?

[Hoytster]

Darn, I was hoping you had the same problem I did. I got nothing else for ya, hopefully somone else will chime in. Good Luck!

[BioStroker]

I was hoping so too. Thanks for the input. Has this happened to anybody else?

[blanco]

It has happenend to me on occasion. It is so random though. I can't seem to peg it.

[BioStroker]

Originally Posted by blanco

It has happenend to me on occasion. It is so random though. I can't seem to peg it.

Do you have a tuner/chip? It doesn't happen to me in my stock setting, or before I installed the tuner. I'll let you know if I'm able to figure anything out, but I'm still at a loss.

[93PONY]

You can check your Throttle with a volt meter.
It's a standard Ford TPS sensor bolted to your throttle pedal.
3 wire setup.
1 12V input
1 Ground
1 Sensor output

Check the sensor output wire with a volt meter (5 volts max is all you'll see).
With the key in the 'ON' position (but motor OFF) you should see .6-.7V. Slowly push on the pedal and watch voltage, it should increase steadily and have no 'dead spots' (spots where voltage does not increase with increased pedal position). WOT Ideally should read 4.5ish volts...but most of the time they read under 4V. The main thing is that there are no dead spots and that voltage doesn't drop out at all during pedal transitions.

[ksolo81]

im having the same prob. in my 99. no mods. keep me informed!