Ford Mustang Forum - View Single Post - 02' V6 RPM's staying high while shifting
View Single Post
post #7 of (permalink) Old 04-28-2006
SHELBY GT 500 Member
V6 Member
kscoyote's Avatar
Joined: Aug 2002
Location: Topeka
Posts: 11,432
Re: 02' V6 RPM's staying high while shifting

Originally Posted by bgagnon127
I have a 2002 3.8L Mustang and the RPM's are staying high in between shifting. I have cleaned the intake, replaced the idle control valve, made sure the throttle linkage is freely moving. Anyone got any ideas on this one? Thanks

If it's staying high between shifts -it's a combination of 2 things NOT related to idle. Emissions and the flywheel. THe 6 has a GT flywheel which is really too heavy for the engine & compression, this causes the flywheel to retain the RPMs between shifts. Also the engines are programmed to do so because the emissions are cleaner that way. A chip or programmer can take care of the engine run-on (but you may not pass emissions - for the 1st part, you'd have to swap to a lighter flywheel.

Now this is different from high idle, if it's idling high, that's a separate issue usually MAF, Idle Air Control, or a Temperature Sensor. If someone put in a 160 degree thermostat, that can cause it, as the engine never knows to turn off the elec`tronic choke.

Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
kscoyote is offline  
For the best viewing experience please update your browser to Google Chrome