Erratic RPM's
#1
Erratic RPM's
2007 MDX with about 145K miles. My wife has been driving on the highway and she said a few times the RPM's have been going up to 5000 while doing 70-75 mph (usually 2000-2500). She said the engine sounded normal and no codes are present. Has only happened a few times in the last few weeks.
Anyone else seen this?
Thanks,
Anyone else seen this?
Thanks,
#4
#5
Not having any messages or codes is not helping. I was thinking maybe the transmission pressure switches but doing some searches it looks like they throw a code.
#7
Null and proud of it
No engine rev, according to wife, could tach be acting up on it's own, seems unlikely...
Tell her to drive a littke fast, or drive it yourself... Try all different combinations of throttle/gear to see if problem can be replicated...
Tell her to drive a littke fast, or drive it yourself... Try all different combinations of throttle/gear to see if problem can be replicated...
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#8
I will probably try 3 x 3 trans oil change and try to get as much fresh fluid in the system to see if this helps.
#9
Senior Moderator
maybe she bumped into Manual mode accidently by knocking the gear shift over? Replacing pressure switches is also a good idea along with the 3x3. Be sure to check the color of the fluid too! If the radiator fails, coolant and ATF can mix spelling disaster for the trans!!!
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