1991 Montero Overdrive probs

Reply Subscribe

Thread Tools

Search this Thread

06-08-2009, 11:30 PM

raff1ut

Junior Member

Thread Starter

Join Date: Feb 2007

Location:

Posts: 10

1991 Montero Overdrive probs

Overall performance is fine other than it doesn't want to shift into overdrive. Which is okay for granny cruising around town but not very polite for highway usage. Any ideas or suggestions?

06-10-2009, 04:27 PM

Manybrews

Senior Member

Join Date: May 2003

Location: United States

Posts: 1,187

probably the coolant grounding switch.

the car is not going to shift into overdrive until the engine is at operating temp. Assuming it is (is it?), the terminal that gounds the relay is probably corroded or failing.

06-17-2009, 09:30 PM

jgbrules

Senior Member

Join Date: Feb 2008

Location: houma, louisianna

Posts: 346

seen a few coolant temp sensors for the a/c system fail and cause that same problem. been many years ago, those vehicle dont come back to the dealership anymore unless its a last resort!!