What's wrong with my tranny?
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What's wrong with my tranny?
I recently purchased a 1997 honda accord se for my wife. The car has 164k on it, but the engine is in great running condition. The problem we are having is that the transmission shifts pretty hard into every gear. Oh, and it is an auto. Does anyone have any idea if this is a serious problem and what could be wrong? Thanks for your time.
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From: BR, LA, USA
Re: What's wrong with my tranny?
What color is the tranny fluid? does it smell burn? and by shifting hard do you meant the whole car jerk when changing gears?
-possible need to check out motor/trans mounts
-possible need to check out motor/trans mounts
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Re: What's wrong with my tranny?
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Re: What's wrong with my tranny?
The fluid is red in color and doesn't seem to smell burnt at all. Yes, the car jerks while changing, but more so at a higher rate of speed.
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MM Gruppe B
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From: 94577/Gaillimh
Re: What's wrong with my tranny?
Originally Posted by techauto
NC/NM speed sensor, code 9/15
Symptoms of a faulty NM speed sensor: Located at the end (passenger side) of the transmission on some models, check for code 15 or transmission jerks hard when shifting. Symptoms of a faulty NC speed sensor is the lock-up clutch does not engage. The NM or NC speed sensor (code 9) should be within 400-600 Ohms at 20-degrees C. If they are not within spec replace them. If they are within spec check for a possible short to ground but first unplug the harnesses at the TCU.
How to replace the NC speed sensor:
To locate the NC speed sensor on the back of the transmission follow two wires connected to the sensor. The sensor is located on the transmission between the engine firewall and the transmission towards the tire's mud guard on the 90-93 Accord. The NC speed sensor appears to look like a fuel injector (not the best of description.)
Reach inside with a 10 mm socket wrench and unbolt 1 bolt that holds the speed sensor in place.
Carefully twist the speed sensor as you pull it out.
Replace the O-ring.
How to replace the NM speed sensor:
To locate the NM speed sensor on the front of the transmission follow two wires connected to the sensor. The sensor is located on the transmission between the engine radiator and the transmission towards the tire's mud guard on the 90-93 Accord. The NC speed sensor appears to look like a fuel injector (not the best of description.)
Reach inside with a 10 mm socket wrench and unbolt 1 bolt that holds the speed sensor in place.
Carefully twist the speed sensor as you pull it out.
Replace the O-ring.
Author's tip on the NM/NC sensors: Usually, these sensors can pick up a lot of metal particles or metal dusts which can magnetically pile on top of the sensor surroundings. On some vehicle, the control unit simply won't function properly and the car can jerk harshly. On these cases, I simply remove the sensor then wipe and wash out the metal debris and reinstall. I then reset the computer. Everything would work as it should. The buildup of materials simply won't let the sensor read.
Symptoms of a faulty NM speed sensor: Located at the end (passenger side) of the transmission on some models, check for code 15 or transmission jerks hard when shifting. Symptoms of a faulty NC speed sensor is the lock-up clutch does not engage. The NM or NC speed sensor (code 9) should be within 400-600 Ohms at 20-degrees C. If they are not within spec replace them. If they are within spec check for a possible short to ground but first unplug the harnesses at the TCU.
How to replace the NC speed sensor:
To locate the NC speed sensor on the back of the transmission follow two wires connected to the sensor. The sensor is located on the transmission between the engine firewall and the transmission towards the tire's mud guard on the 90-93 Accord. The NC speed sensor appears to look like a fuel injector (not the best of description.)
Reach inside with a 10 mm socket wrench and unbolt 1 bolt that holds the speed sensor in place.
Carefully twist the speed sensor as you pull it out.
Replace the O-ring.
How to replace the NM speed sensor:
To locate the NM speed sensor on the front of the transmission follow two wires connected to the sensor. The sensor is located on the transmission between the engine radiator and the transmission towards the tire's mud guard on the 90-93 Accord. The NC speed sensor appears to look like a fuel injector (not the best of description.)
Reach inside with a 10 mm socket wrench and unbolt 1 bolt that holds the speed sensor in place.
Carefully twist the speed sensor as you pull it out.
Replace the O-ring.
Author's tip on the NM/NC sensors: Usually, these sensors can pick up a lot of metal particles or metal dusts which can magnetically pile on top of the sensor surroundings. On some vehicle, the control unit simply won't function properly and the car can jerk harshly. On these cases, I simply remove the sensor then wipe and wash out the metal debris and reinstall. I then reset the computer. Everything would work as it should. The buildup of materials simply won't let the sensor read.
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