Question about 1993 Chevrolet C/K 3500

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Transmissions won't stay in overdrive - 1993 Chevrolet C/K 3500

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Its the throttle positioning sensor,Its located on the throttle linkage on the thottle body.

Posted on Dec 31, 2010

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It wont shift into overdrive the transmission has pressure I changed to fluids when I go to pass it wont shift into overdrive


strange as it may sound, transmissions do not shift into overdrive to pass
they down shift a ratio to get extra torque from the motor and will stay down shifted until the vacuum actuator shifts it back and only then when the VSS reports to the TCM that a ratio change up is needed will the overdrive click in
If you cannot get OD under any circumstances run the fault codes and check for a problem overdrive servo/ solenoid , TCM unit

Apr 24, 2016 | 2007 Dodge Ram Truck

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If the overdrive on my 05 Pontiac aztec is out... does that mean the transmission is going out and it all needs to be replaced or is it something simpler?? Harder?? Is it worth fixing???


the over drive is controlled by a servo/solenoid that sometimes fails
It could be a TCM problem
It is not an indication of a failing transmission unless you have more indications you have not mentioned and if diagnosed by an accredited transmission shop should be fairly cheap to fix.
It is worth fixing

Aug 22, 2015 | Pontiac Cars & Trucks

1 Answer

I have a 1992 ford ranger that will not shift into overdrive unless you do it manually in or out so I changed transmissions & this one is doing the same thing


The problem is most likely not in the transmission. Since it is doing the same thing with both of them. I would start with checking speed sensor circuit. The speed sensor send signal to the processor and the processor in turn controls shift point etc. You need a really good scanner and monitor PIDS. Watch what the speed sensor is reading and look at fuel trim to make sure the vehicle is seeing what the vehicle is really doing. Your OBD is very primitive compared to todays OBDII, which holds and keeps information. Therefore you have to monitor while driving and situation happens. If you can, try a KNOWN GOOD PCM first. However, don't go out and buy a new one without verifying that it is the PCM

Aug 24, 2017 | 1992 Ford Ranger

1 Answer

2001 montana won,t runs about 2800rpms @70 don,t seen to be going into overdrive on adown hill slope when in overdrive with the shifter it drops the rpms down to 700rpms , and when you put the shifter into...


I think I understand the question. These transmissions are known for the 4th speed shaft shearing off the splines. 4th being overdrive. This won't let it shift into overdrive and also no engine breaking when you are coasting. In other words, when you are coasting your engine rpms will drop down to idle speed. So when in 3rd or drive manual, you do have engine breaking and the rpms fall slowly. The transmission is gonna have to come out to be repaired. I hope this helps.

Apr 01, 2011 | 2001 Pontiac Montana

1 Answer

I replaced my auto transmission with overdrive in 1987 ford ranger now it will not shift into overdrive all other gears work fine how do i fix it


switch to a manuel transmission...
The ford A4LD transmissions are one of the worst transmissions ever manufactured...

When you did the swap , did you flush the lines and use a rebilt torque converter?

Sep 28, 2010 | 1987 Ford Ranger

1 Answer

Where is the speed sensor located on a 2000 jeep Grand cherokee v6 4.0 L?


Since you have the die hard, can not kill 4.0, I believe this mated with the 42RE transmission. My understanding It use's a single sensor (located on the overdrive gear case, over the park gear).The 42RE transmissions use a single sensor (located on the overdrive gear case, over the park gear). The 42RE transmissions use a single sensor (located on the overdrive gear case, over the park gear).

Oct 02, 2009 | Jeep Grand Cherokee Cars & Trucks

1 Answer

1993 grand cherokeeoverdrive button light stays on ,no overdrive


The button itself may be bad. If the button is ok, then the problem could be in the transmission control module located behind the dash or worse, it could be an internal problem with the transmission itself. I would start small by checking or replacing the panel that includes the overdrive button. The easiest and cheapest place to get one is a salvage or junk yard. If this doesn't solve the problem then it is best to take your Jeep to certified mechanic. When it comes to the Grand Cherokee, they used around 5 or 6 different transmissions and several different transmission control modules. I wouldn't recommend the do-it-yourself guy try working on those systems. I Just recently replaced the transmission in my 93 Cherokee and finding a used one that was actually the right model was like looking for a needle in a haystack

Jul 14, 2009 | 1993 Jeep Grand Cherokee

2 Answers

Transmission fault,7800 miles


WELL ITS RECOMMENDED TO ALWAYS REMOVE FROM OVERDRIVE WHEN TOWING TO PREVENT TRANS DAMAGE. POSSIBLY HAD A PROBLEM ALREADY AND THIS WAS THE FINAL STRAW,SORRY DUDE. USUALLY THERE 4R70 TRANSMISSIONS ARE GOOD TRANSMISSIONS. POSSIBLY A BAD SOLENOID OR ISSUE IN VALVE BODY,DON'T CONDEMN INTERNALS YET UNTIL HAVE A TRANS TECH INSPECTS IT. THEY HAVE A FEW UPDATED FOR THESE TRANSMISSIONS ALSO

Jul 12, 2009 | 2008 Ford F 150 2WD

1 Answer

Transmission temp light comes on and kicks o/d off? any suggestions


i suggest to have the transmission fluid and filter changed and also have a Transmission cooler installed because transmissions and heat are not a good combination. Heat is the reason over 75% of the transmissions fail and the reason it is shutting your overdrive off is because it is a safty feature in the transmission. see your overdrive is the weakest spot in a transmission due to the size of the clutches and the drums so this is usually the first spot the transmissions have problems and also the reason you never ever pull anything while you are in overdrive if you pull a boat or any trailer make sure you shut your over drive offf while pulling.

Apr 26, 2009 | 2003 Dodge Durango

1 Answer

Won't stay running


do you have an overdrive trans, the overdrive solenoid might be sticking locking the trans in overdrive
causing the no start

Jul 09, 2008 | 1989 Chevrolet Celebrity

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