Can't... overdrive is controlled by the computer. If you removed the computer I'm assuming you're building a hot rod. If this is the case, I suggest removing the overdrive tranny anyway and installing a turbo 350 (TH350). You can get them cheap, they're a workhorse and it'll bolt right up to any GM V8 and many older V6's. Shift performance kits are cheap for them... around a hundred bucks or less (chirps into every gear). They're also easy to find... all late 60's and 70's GM muscle cars had them (if they were automatics) and it was used on full size cars without overdrive right through the 80's.
There could be several reasons why your overdrive isn't working. Common issues include low transmission fluid levels, a malfunctioning overdrive switch, or problems with the transmission itself. Additionally, if the vehicle's computer detects any issues, it may disable overdrive to protect the transmission. It's best to have a mechanic diagnose the problem for a precise solution.
Get the transmission rebuilt.
The overdrive pan on a 4L30E transmission is located on the bottom of the transmission case. It is typically the larger of the two pans, with the other being the transmission fluid pan. To access the overdrive section, you would need to remove the transmission from the vehicle and then unbolt the overdrive pan to reach the internal components. Always ensure to follow proper procedures and safety measures when working on a transmission.
Overdrive in Subarus, like just about every car with an automatic transmission built in recent memory, is built into the routine working of the transmission. Your transmission selector, if it's like mine, has a "D" for drive then the next digit down is a "3". Choosing the "D" allows the vehicle to access overdrive when appropriate. Driving with "3" as your chioce does not allow the overdrive to work. --Ken
I was told that it is the temp sensor. The car needs to be at 150 degrees. I am working on the same problem.
overdrive is not working and it should be looked at by a transmission shop
If the overdrive function is not working in a Pajero 2.8, it could be due to several issues, such as a malfunctioning overdrive switch, problems with the transmission fluid, or internal transmission faults. It's also possible that the overdrive solenoid is not engaging properly. Checking the transmission fluid level and condition is a good first step, followed by inspection of the relevant electrical components. If the problem persists, it may require professional diagnosis and repair.
What about the overdrive needs reset? If it isn't working, then you need to have the computer checked for codes, you need to check trans fluid. etc...
lower fuel economy.the reason its not working is what u should be worrying about.could be a presighn of transmission failure.
If the overdrive switch on your 1988 Ford Econoline E350 is not working, it could be due to a faulty switch, a blown fuse, or an issue with the transmission itself. First, check the fuse associated with the overdrive system. If the fuse is fine, inspect the switch for any signs of damage or loose connections. If those components are functioning correctly, the issue may lie within the transmission or its wiring, and further diagnostic testing may be necessary.
Yes, you can replace just the overdrive solenoid in a 1991 Mazda MX-6 without overhauling the entire transmission. The solenoid controls the engagement of the overdrive function, and if it's malfunctioning, replacing it may resolve the issue. However, it's essential to diagnose the problem accurately, as other transmission issues could also affect overdrive functionality. Before proceeding, consider consulting a mechanic to confirm that the solenoid is the root cause of the problem.
if the speedo is also not working it could be a vss problem or an issue with the gear or square shaft where speedometer hooks to tranny/ if speedo works just no overdrive there is a temp sensor on the tranny that can keep od from working or may be wiring issue with factory od on/off switch