Hesitation during acceleration

[AdamWest436]

I get it in my 19 XLT if I don't turn off TC in drive. I always assumed it was the same as when the wheel slips or when you try to drive off too fast after going from reverse to drive.

 

[Doraemon0825]

My 3.5L v6 stutter before, done transmission oil change, flush 3.6L, then run 1 hour then fill up again. All the stutter was removed. Now, I have issues going uphill. Seems that it’s accelerating slowly and engine revs so high and slow

 

[Mikeflynn79]

I have a 4WD 2014 XLT Explorer that occasionally "drags" when I try to accelerate. It can be bad, almost dangerous, if I start to accelerate then back off briefly before accelerating again. It feels like something is purposefully attenuating the throttle response.

I suspect a sensor because I can't seem to make it happen when it's in the Sand Mode.

I've shut-off traction control and trailer sway control and it seems to help some but not completely.

Any thoughts?

Did you ever figure this out? I have a 2013 doing the exact same thing. Replaced plugs, coil packs and O2 sensors. Nothing helps.

 

[peterk9]

Did you ever figure this out? I have a 2013 doing the exact same thing. Replaced plugs, coil packs and O2 sensors. Nothing helps.

Welcome to the Forum Mike.
Throttle body?

Peter

 

[Mikeflynn79]

Welcome to the Forum Mike.
Throttle body?

Peter

It just threw a P0430 code so now I am thinking Catalytic converter. I am getting tired of guessing and throwing money at it though.

 

[peterk9]

The Forum has a handy 'Search' feature. Not sure if the following threads will help.

Fix P0420 P0430 for only 10$

Hello all Before two weeks ago my engine warning light turn on and after check by (torque app) it show me this code warning P0420 and P0430 some mechanics told me i need to change the oxigen sensores and the other told me i need to replace the catalyst! But after many searching in google and...

www.explorerforum.com

P0430 code data and diagnosis

I started getting the dreaded P0430 code about three weeks ago. I have cleared the code a couple times, and it is usually several days before it comes back. Most recently, it went off on its own and has been off a couple days. Nevertheless, I need to figure what the problem is. I have...

www.explorerforum.com

Need help with OBD code P0430

2011 Explorer, 108k. The check engine light recently came on my Explorer, code P0430 - Catalyst System Efficiency Below Threshold (Bank 2). After some online the research the easy signs pointed to the downstream O2 sensor on bank two. I replaced both downstream sensors and reset the codes. It...

www.explorerforum.com

P0420 and P0430 Codes

I have purchased a 2015 Explorer Limited 3.5L V6 that did not pass smog check. Batter was replaced just before i bought it so figured the vehicle had not made its way through the drive cycle. Engine light then came on while driving around during drive cycle. I have reset the light with an...

www.explorerforum.com

Peter

 

[mguy13sport]

It just threw a P0430 code so now I am thinking Catalytic converter. I am getting tired of guessing and throwing money at it though.

Tap the cat converter when its cold and see if anything bounces inside

If you are techy it is possible to graph timing and other data using forscan on ur phone/laptop

 

[chememp]

I have a 4WD 2014 XLT Explorer that occasionally "drags" when I try to accelerate. It can be bad, almost dangerous, if I start to accelerate then back off briefly before accelerating again. It feels like something is purposefully attenuating the throttle response.

I suspect a sensor because I can't seem to make it happen when it's in the Sand Mode.

I've shut-off traction control and trailer sway control and it seems to help some but not completely.

Any thoughts?

Same issue on 2017 explorer, transmission flush fixed it. Sounds like it’s a normal issue

 

[peterk9]

Same issue on 2017 explorer, transmission flush fixed it. Sounds like it’s a normal issue

Welcome to the Forum.

Peter