Rough Idle, maybe?

[LightningBlue]

After a cold start while idling my engine appears to have a rough idle, I can feel it in the cab. It's kind of like a rumble/shake. It's not constant, but it is frequent. It's not making a noticeable noise or rpm fluctuation. I'm wondering if anyone is feeling this or if I'm just being overly paranoid. Currently 450 Miles on the odo. Running 91 octane.

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[j0shm1lls]

After a cold start while idling my engine appears to have a rough idle, I can feel it in the cab. It's kind of like a rumble/shake. It's not constant, but it is frequent. It's not making a noticeable noise or rpm fluctuation. I'm wondering if anyone is feeling this or if I'm just being overly paranoid. Currently 450 Miles on the odo. Running 91 octane.

No sweet smelling exhaust fumes on startup are there?

Focus RS Headgasket all over again if so

 

[LightningBlue]

No sweet smelling exhaust fumes on startup are there?

Focus RS Headgasket all over again if so

No, nothing out of the ordinary aside from the rumbling.

 

[earsmccoy]

No, nothing out of the ordinary aside from the rumbling.

What's your production date? There is a TSB (TSB 19-2052) on certain early production Rangers. It specifically mentions rough idle cold starts as one of the issues. I will see if I can get a copy of it....

 

[earsmccoy]

Here is the TSB.

 

[j0shm1lls]

After a cold start while idling my engine appears to have a rough idle, I can feel it in the cab. It's kind of like a rumble/shake. It's not constant, but it is frequent. It's not making a noticeable noise or rpm fluctuation. I'm wondering if anyone is feeling this or if I'm just being overly paranoid. Currently 450 Miles on the odo. Running 91 octane.

I honestly haven't paid attention I guess, but with the TSB being a thing, I definitely will in a bit when I head home from work.

 

[LightningBlue]

Here is the TSB.

Yeah, my build date is 12/18

 

[earsmccoy]

Yeah, my build date is 12/18

Should be an easy fix, take it to the dealer and ask them to reprogram it in accordance to that tsb and you should be good to go. I have noticed some harsh shifts and what I thought was a slight rough idle so I am going to have them reprogram mine under warranty at my first oil change.

 

[LightningBlue]

Should be an easy fix, take it to the dealer and ask them to reprogram it in accordance to that tsb and you should be good to go. I have noticed some harsh shifts and what I thought was a slight rough idle so I am going to have them reprogram mine under warranty at my first oil change.

I just figured out that I have one of only a few members with their Ranger being built in 2018. Kinda cool, I hate to be the guinea pig though lol

 

[@zzzziegler]

Yeah, my build date is 12/18

Mine is also 12/18

 

[Akshon]

December build here too. Vin in the 2500’s

 

[rangerdanger]

This TSB addresses rough idle issues: https://www.ranger5g.com/forum/thre...-runs-rough-rough-shifting-transmission.2135/

 

[Gary Marquard]

After a cold start while idling my engine appears to have a rough idle, I can feel it in the cab. It's kind of like a rumble/shake. It's not constant, but it is frequent. It's not making a noticeable noise or rpm fluctuation. I'm wondering if anyone is feeling this or if I'm just being overly paranoid. Currently 450 Miles on the odo. Running 91 octane.

Just picked up my 2019 Ranger idle surging, and engine revving by it self, cold start up and in gear idle runs 1000-1500 surge, now have 100 mi. and coming off highway ramp engine rpm went to 6000 rpm slipped in to neutral and goosed the pedal, and it calmed down but i didn't, going to dealer. View attachment 20671

 

[DavidR]

Just picked up my 2019 Ranger idle surging, and engine revving by it self, cold start up and in gear idle runs 1000-1500 surge, now have 100 mi. and coming off highway ramp engine rpm went to 6000 rpm slipped in to neutral and goosed the pedal, and it calmed down but i didn't, going to dealer. View attachment 20671

Sounds like it should be looked at. On rare occasions, mine will rev the engine up to 2000-3000 RPM or so for a few seconds when I put it into neutral, but it's been so seldom I haven't worried about it yet. I'll be curious what they find out with yours in case mine is just a less serious version of the same issue.

 

[Caluke]

My truck has a small miss on cold start. Definitely noticeable if I put it into gear right away. Need to take it to the dealer for reflash just haven’t had the time. I just remote start it and let it drop off high idle for now lol.

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