93 jeep grand cherokee overdrive working backwards
Asked by landonsdad2511 Apr 17, 2012 at 07:14 AM about the Jeep Grand Cherokee
Question type: Maintenance & Repair
i have a 93 jeep grand cherokee with a 4.0 straight 6. automatic. when i press the overdrive and the light comes on
my rpms will drop 250 rpms at 60+mph. when i press the od off switch and the light goes off then it raises the
rpms. either way its still not dropping enough rpms. was told at 65 i should be running 2000 rpms. any advise?
13 Answers
aztec626bf answered 12 years ago
From what your saying appears that your OD is working properly. A 250 RPM drop is about right.
landonsdad2511 answered 12 years ago
how many rpms am i supose to be running at 65 mph?
landonsdad2511 answered 12 years ago
ok my jeep runs lil over 3000 at 65
aztec626bf answered 12 years ago
That's pretty high are you shifting into all the gears?
aztec626bf answered 12 years ago
Check your tranny fluid for color and level. You can also do this check on tranny. Pull your tranny dipstick and with a very clean white cloth wipe the dipstick down. If you notice a lot if black colored residue you have excessive internal wear. If that is the case you'll need to look closer there. How many miles on your jeep?
aztec626bf answered 12 years ago
Perform the check for debris on the transmission dipstick. With that amount of miles you should not have any significant wear. You should be able to use some additive to the transmission to purge out any debris. Sea-Foam makes an awesome product that works well for these types of issues.
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