97 Accord 2.2L 150k miles
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Honda-Tech Member
Joined: Nov 2011
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From: Tampa, FL
97 Accord 2.2L 150k miles
this morning i went to take my brother to school and my accord doesnt want to go pass third gear and it's hesitating real bad it's an automatic, about half way to where i was going the check engine light came on i stopped at advance auto shop and they did an obd scan it came up with the speed sensor my question is could the speed sensor be causing this issue?
Also the oil light has been flashing for a week when i stop at a light the rpms drop below 500 and the oil light starts flashing ive already cleaned the IACV and replaced the oil conrol switch any suggestions?
Also the oil light has been flashing for a week when i stop at a light the rpms drop below 500 and the oil light starts flashing ive already cleaned the IACV and replaced the oil conrol switch any suggestions?
Last edited by Roger5; Dec 9, 2011 at 01:27 PM.
Honda-Tech Member
Joined: May 2010
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From: Youngsville NC
Re: 97 Accord 2.2L 150k miles
Well, I'd want the actual code so you are sure of which sensor on the trans (NC, NM, VSS) is throwing the code.....then I'd test, then replace if bad...look online, I bet you can find a VSS - if that is what it is - for less than $100
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From: 94577/Gaillimh
Re: 97 Accord 2.2L 150k miles
Do not put any fluids other than Honda ATF in the transmission.
You need to tell us the exact code that is showing up. 'Speed sensor' means diddly squat when the transmission has three 'speed sensors'.
The VSS signals the speedometer, so unless it is acting strange I highly doubt its the VSS. More than likely one of the two shaft speeds sensors are coated in crud.
Get the code, post it, and we can then help you.
You need to tell us the exact code that is showing up. 'Speed sensor' means diddly squat when the transmission has three 'speed sensors'.
The VSS signals the speedometer, so unless it is acting strange I highly doubt its the VSS. More than likely one of the two shaft speeds sensors are coated in crud.
Get the code, post it, and we can then help you.
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MM Gruppe B
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From: 94577/Gaillimh
Re: 97 Accord 2.2L 150k miles
In this drawing of the right side cover the two sensors are labeled NM and NC. Although I believe the labeling is backwards as the counter shaft is the 'NM' and the main shaft is the 'NC'. Check both with a voltmeter for correct resistance, if that is good then remove both sensors and clean them off. If one is fouled with shavings the other is probably pretty close as well.
You will need a 10mm wrench to remove/reinstall and two new O-rings to reseal them(they will leak after removal).
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.
http://techautorepairs.com/images/nc.gif
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.
http://techautorepairs.com/images/nc.gif
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.
Honda-Tech Member
Joined: May 2010
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From: Youngsville NC
Re: 97 Accord 2.2L 150k miles
B*a*n*n*e*d
Joined: Dec 2008
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MM Gruppe B
Joined: Feb 2009
Posts: 7,028
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From: 94577/Gaillimh
Re: 97 Accord 2.2L 150k miles
If your car has over 100Kmiles and you feel a misfire while at part throttle then but fine at idle and WOT then it is most likely clogged EGR ports.
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