07-09-2019, 07:25 PM
Join Date: Jul 2019
Location: Fort Collins
2018 JL 4-cylinder turbo throttle lag - Any ideas?
I have a 2018 Jeep Wrangler Sport 2-door 4-cylinder turbo. I'm having an issue that I can't figure out. The Jeep has about a 2 second delay on the throttle when I push the gas pedal down. It's only noticeable when I'm moving. I have no issues from a dead stop. I put a full description of the behavior at the bottom of this message.
I know electric throttles have a delay. I expect it. This is not the old cable throttle system. However, none of the other cars I've owned ever had a delay like this.
I bought an iDrive hoping it would fix the issue. The iDrive works great, just as advertised, AFTER I'm past the throttle delay. It's a lot of fun to drive but does not address the initial throttle press delay issue.
This is also not the auto-stop/start function. The car is running and moving the whole time.
I brought the Jeep into the dealer to check the issue. They did a PCM software update but said they couldn't duplicate the issue (surprise, surprise...).
Has anyone else heard or or dealt with this? It really bugs me. All suggestions are appreciated.
Hereís the step by step description of what happens Ė
1 - Iím driving at normal street speeds. I press the gas pedal to accelerate. I can count to two, 1-2, before anything significant happens. It sounds like the engine is winding up (although the tach doesnít change) but no additional power is getting to the wheels. After a count of two, the power goes to the wheels and the car will accelerate. Depending how hard I was pushing the pedal, the Jeep will lurch forward or the acceleration may be gentle. Itís most noticeable when pushing down the pedal fairly far and fast to pass a car in a short space (not flooring it, just a good definitive push).
2 Ė The same scenario as above but this time Iím making a right-hand turn at a green light. This is where the issue is most troublesome. The car is moving the whole time. It never stopped. It never turned off. I press the gas, hear the engine rev up, count 1-2, then the car accelerates. This time though, Iím in a corner. When the car accelerates, the car will lurch when the real wheels start getting power and I have to keep the car from trying to fishtail (I never let it get bad enough to lose control.)