Jump forward when changing transmission to drive

FLAVIO FABIANI

MEMBER
2012 MITSUBISHI TRITON
3.5L
V6
4WD
AUTOMATIC
20,000 MILES

Initially I apologize for my English.
When I am with my vehicle stopped and with the change in the n position (in a traffic light for example) and change to the D position, the vehicle of a jump forward. It is not always that it occurs. I already verified the oil level of the change and is correct and within the validity period.
What could it be? Thank you very much.

2 Replies

HMAC300

MECHANIC
48,601 POSTS

Try cleaning throttle plate on both sides and IAC hole with choke cleaner then check your transmission fluid it may be low.

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Thursday, May 18th, 2017 AT 7:19 AM

STEVE W.

MECHANIC
13,449 POSTS

Normally you would not shift out of drive while setting still as that can cause the engine to rev higher as it is not loaded by the transmission, or if you have the air conditioning on the idle speed will be raised some due to the extra load of the compressor those are both normal.
However, it sounds like the idle speed may be a bit high. That could be caused by a vacuum leak or similar issue. One that may get overlooked would be if your foot was close enough to the fuel pedal and was causing it to be pressed just enough to cause the engine rpm to be higher. I would start by watching your feet for the last one first. If you can rule that out then have the others checked.