New Gladiator misfire Issues

[khoality]

Just picked up a brand new 2024 Gladiator off the lot on Monday and started already received a CEL in less than 100 miles. Going to take it to the dealer on Tuesday to get it looked at. I don't know too much about the mechanic of cars so hoping I could get some insight here.

I started to notice a rough idle issue on cold start, but It would go away as soon as I start driving. Went to AutoZone to get the codes pulled and codes P1128, P0132, P0300 showed up, indicating o2 sensor and cylinder misfire issues.

I've only added a Warn Zeon 12-S Winch to the battery. Would this cause an issue with the O2 sensor at all?

Sponsored

 

[JTGuy]

I have used only 91 octane and have had no issues. I know that 87 should work ok .

 

[Hootbro]

I have used only 91 octane and have had no issues. I know that 87 should work ok .

Huh?

 

[JTGuy]

Use Premium fuel. It might help.

 

[khoality]

Use Premium fuel. It might help.

Still on the same tank of gas from the dealer. I don’t think it’s a fuel issue, unless the dealership filled it with bad gas.

I’ve used 87 in my 2020 wrangler with the 3.6 v6 and never had a misfire issue.

 

[Rocksalt]

shouldnt need to run anything other 87 octane. Something else is the issue

 

[WoolyKris]

Take it to the dealer, most likely you got a bad sensor from factory. Jeep quality control pretty much is non existent nowadays….

 

[Lunentucker]

Dealer.
Ask if there's a PCM update.
Ask to check the Upstream 02 sensor.
No. Adding the winch should have no effect at all.

 

[ShadowsPapa]

Use Premium fuel. It might help.

No, it won't.
Premium is only higher octane - resists self-ignition.

 

[ShadowsPapa]

Dealer.
Ask if there's a PCM update.
Ask to check the Upstream 02 sensor.
No. Adding the winch should have no effect at all.

Exactly.
And fuel has nothing to do with those codes.

 

[ShadowsPapa]

Still on the same tank of gas from the dealer. I don’t think it’s a fuel issue, unless the dealership filled it with bad gas.

I’ve used 87 in my 2020 wrangler with the 3.6 v6 and never had a misfire issue.

Yeah, none of us know why premium was mentioned - has nothing to do with anything here.
Misfires aren't due to octane issues.

 

[khoality]

Took it to the dealer today. Tech notes state that no output voltage was coming from the PCM and that it needs to be replaced. Part is on backorder so who knows when I'll get the Gladiator back.

Had good luck on my 2020 Wrangler with 0 issues, disappointed to have a fried PCM within a week of owning the Gladiator.

 

[Banned]

Go back to the dealer and tell them you want your truck fixed tomorrow, or you want a new truck, Insist on it. If that doesn't work, go fucking ape shit.

 

[Hootbro]

Go back to the dealer and tell them you want your truck fixed tomorrow, or you want a new truck, Insist on it. If that doesn't work, go fucking ape shit.

Yeah, it does not work like that in real life. One day, week or year driving off the lot, he has a warranty issue regardless and it seems like the dealership is trying to address it as such. Going ape shit will just get you a trespass order issued against you by the dealership if they so choose .

He would have quicker results waiting out a lemon law claim once that threshold is met than the dealership would trying to unwind the deal, especially if there is a bank loan involved and the title and registration process has already been started.

 

[ShadowsPapa]

Yeah, it does not work like that in real life. One day, week or year driving off the lot, he has a warranty issue regardless and it seems like the dealership is trying to address it as such. Going ape shit will just get you a trespass order issued against you by the dealership if they so choose .

He would have quicker results waiting out a lemon law once that threshold is met than the dealership would trying to unwind the deal, especially if there is a bank loan involved and the title and registration process has already been started.

Agreed - and they at least need a chance to fix it and make it right. Going in with demands will get them on the defensive from the word go. They are also subject to availability of parts and staffing.
It's not like this is a big ongoing thing with multiple visits taking days or weeks - so far.

Sponsored