Throttle by wire, questions

[mellinman6]

Wow, here it is two years after the last thread in post and it's really useful info. I just bought an '04 Explorer with the 4.0 and I didn't really notice the crazy throttle tip in at first then I started noticing it more and more. It got the point where I was constantly worrying about what was wrong with the thing. Then I find this post, and I can sleep again. AWESOME!

 

[stuartr]

So I read through this and didn't see the answer. Will the dealer reflash the puter if you are under warr.? Does this affect a 08 4.0 also? How about my 02 out of warr.?

STU

 

[rumpledoll]

The 2002 and 2003 are not throttle by wire, they have a mechanical cable controlling the throttle so the issue and fix do not apply to them.

Rumple

How about my 02 out of warr.?

STU

 

[xTOM153x]

The 2002 and 2003 are not throttle by wire, they have a mechanical cable controlling the throttle so the issue and fix do not apply to them.

Rumple

I have an 03 and i have hesitation with the pedal response is there a fix for mine?

 

[rumpledoll]

Just the usual suspects in cases of a ODBII vehicle that hesitates on acceleration (in no particular order):

1) Dirty/bad MAF (mass airflow sensor)
solution - clean/replace MAF
2) Dirty fuel injectors
solution - clean injectors.
3) Low fuel pressure
solution - Replace the fuel filter
4) Vacuum leak
solution - Find it and fix it
5) Bad TPS (throttle position sensor)
solution - replace it
6) Worn or dirty spark plugs
solution - replace plugs
7) Bad plug wires
replace
8) Weak coil
replace
9) Leaky/bad EGR (exhaust gas recirculation)
replace

IIRC there is a transmission ECU update that may also effect this feeling of hesitation, but I've never had it done as my early run 2002 works fine as is.

Rumple

I have an 03 and i have hesitation with the pedal response is there a fix for mine?

 

[High_Order1]

you can also search my name and ebcornburner, he came up with an idea, and I shot pictures of it. You can pull a comb filter out and smooth a lot of it. Also, I am told that some of the higher end PCM flashers can edit the map to make this better. I'll know in a couple of months.

Shawn