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fancy forte

fancy ... 11/8/2019

2014 Kia Forte EX 4 Cyl 2.00L

Transmissions & Drivetrains

delayed shifting at high rpm/ speed

4cylinder 2.0 shifts good at low speed/ rpm, when at highway speed and try a pass, rpm spikes and no shift. sport shift cycles gears without problem, no codes, no lights. was thinking throttle position sensor or tcm?

4 Answers


Jimm

Jimm 11/8/2019

First question - how many miles are on the vehicle? How many miles are on the transmission? What is the transmission fluid level? Has the fluid level been checked and refilled as necessary? I recommend scanning for codes with at TCM-capable reader (even if the CEL - check engine light- is not on).

There are several possibilities; low or incorrect fluid level, faulty transmission fluid temperature sensor,

BTW - there is a TSB (Technical Service Bulletin) for the failing transmission fluid sensor - in fact, the OE temp sensor, part # 46386 3B000 has been replaced by 46386 3B900.

Reference the TSB: 'PCM Upgrade - Shift Hesitation and Shift Delay Improvement with 2.0L and 4 Speed A/T (SA020) (Trans - 030)'

Also reference TSB - TRANS 043: SUBJECT: 6-speed AUTOMATIC TRANSAXLE OIL TEMPERATURE SENSOR DTC P0711, P0712 & P0713

This bulletin provides information related to replacing the transaxle oil temperature sensor on 6-speed automatic transaxles with DTC P0711, P0712 and/or P0713. Replace the oil temperature sensor if current or history code is present; Do not replace the transaxle. To reduce vehicle repair time, this procedure can be performed with the transaxle installed in the vehicle. Photos shown are on-bench to increase the clarity and understanding of this procedure. This is a generic procedure and does not account for minor variations between models.

DTC P0711, P0712, and P0713 can be set due to a faulty PCM, an open circuit, or a bad transaxle oil temperature sensor. When either of these codes is set, the default value for the transaxle oil temperature sensor is 176°F (80° C). Prior to replacing the temperature sensor, perform a component and wire harness inspection as shown in the KGIS DTC diagnostics. Only proceed with sensor R&R after confirming proper connections, circuits, and PCM simulation checks.

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Jimm

fancy forte 11/8/2019

112,000 on engine and tranny, fluid levels good and good color and smell. Was hoping a quick sensor swap but it looks like simulation tests needed for sure and checking out your suggested references. Thanks

fancy forte

fancy forte 11/9/2019

Ok, I have seen many threads with same issues. It turns out my problem is the drive by wire, the accelerator pedal sensor. There are threads on fixing the one in the car or can be replaced for 75 to 150 for th part on line. Just thought I would add my findings because I have read a lot of threads that never had a final answer.

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fancy forte

fancy forte 11/11/2019

Spoke too soon, it's all back. Not sure what it is.

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fancy forte

fancy forte 11/11/2019

Spoke too soon, it's all back. Not sure what it is.

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