2018 GT idle issues

[IsabellePinto03]

Recently got a 2018 GT at 44k miles and after about 2 weeks I noticed when I’m idling it ya know stoped at a stop light my cars rpms get up to 2000 and from time to time the engine with cut off and I’ll have to put the car in park and turn it back on. Just need advice what to do, tune up, new spark plugs. I’m not sure…

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[Cobra Jet]

Search on here for threads about:
VCT
IMRC
Throttle Body cleaning
O2 sensor failure

Have you tired to pull codes?

 

[IsabellePinto03]

Not yet, I haven’t had time to get a sensor , but auto zone told my boyfriend and I that if there’s no lights on the dash then there’s no point. But I’ll for sure look at those threads!

 

[Ramairetransam]

could be as simple as bad gas but probably not .

 

[IsabellePinto03]

That’s what I thought, I only pump 93 and I’ve done fuel injector and all system cleaner

 

[KingKona]

Recently got a 2018 GT at 44k miles and after about 2 weeks I noticed....

Take it back to where you bought it, and tell them to fix it.

If they're a good place, they'll take care of it.

 

[ORRadtech]

First, it doesn't have to set a code/turn on the CEL to have pending or historic codes stored.
In addition to Cobra Jets list check your evaporative emissions purge valve. They can be sensitive to "topping off" the fuel tank and can cause various problems.

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