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How to change the VSS (Vehilce Speed Sensor)

 
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Old 08-13-2008, 12:23 PM
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How to change the VSS (Vehilce Speed Sensor)

Hi,

How can I change the Vehicle Speed Sensor (VSS)? I get CEL: #17 (VSS). Speedo is working like it should but the prelude is idling like hell! :S

I got a 1993 prelude vtec (h22a2)
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Old 08-13-2008, 12:36 PM
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Re: How to change the VSS (Vehilce Speed Sensor)

Speedo should not be working along with your trip meter and odometer...try reseting the ECU to see if it comes back or not...

Nevertheless, the VSS is on top of the transmission, in an, "ultra-hard" to reach area. Try searching, we have covered this topic a few times...my best advice is to get angled ratchets and remove as much intake tubing as possible to squeeze your hand in that area...


good luck!
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Old 08-13-2008, 12:39 PM
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Re: How to change the VSS (Vehilce Speed Sensor)

Quote:
Originally Posted by Prelude13 View Post
Speedo should not be working along with your trip meter and odometer...try reseting the ECU to see if it comes back or not...

Nevertheless, the VSS is on top of the transmission, in an, "ultra-hard" to reach area. Try searching, we have covered this topic a few times...my best advice is to get angled ratchets and remove as much intake tubing as possible to squeeze your hand in that area...


good luck!
I have reset the ecu several times.. but no use.. the cel still comes up
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Old 08-13-2008, 12:56 PM
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Re: How to change the VSS (Vehilce Speed Sensor)

When I check the CEL light it first blinks 1 time (about 2 seconds) and then 0,5 sec later it blinks 7 times rapidly.

That means #17 right? Or just #7 (throttle position sensor (TP sensor)?

Sorry for my bad english :)
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Old 08-13-2008, 02:15 PM
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Re: How to change the VSS (Vehilce Speed Sensor)

http://preludezone.com/showthread.php?t=2363

1 blink = heated o2 sensor
7 blinks = TPS

Like I said, if your VSS did go bad, your speedo would be completely dead along with what i said in post #2 Since you said your idle is bad, TPS can be the culprit...a faulty TPS can cause a host of trouble, including erratic idling...


an no worries, your English is just fine. Isn't English the 2nd language in the Nederlands?
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Old 08-13-2008, 02:49 PM
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Re: How to change the VSS (Vehilce Speed Sensor)

Thanks man.. But the first blink is a long one.. after that it blinks 7 times (short blinks).

Haha no man, we only speak dutch here in Holland. I used to live in the UK in the past (for 2 years), but anyway.. Shall I record a vid so you can check the 'cel blinks'? I don't understand em 100%
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Old 08-13-2008, 09:38 PM
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Re: How to change the VSS (Vehilce Speed Sensor)

remove the intake and look for a sensor that looks like this on the back of the tranny

http://www.1aauto.com/scripts/view_f...tion_id=582725
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Old 08-13-2008, 11:53 PM
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Re: How to change the VSS (Vehilce Speed Sensor)

I have a 1993 Prelude with the H22.

If your VSS went out then you would have no Odometer or Speedometer. Also a Check Engine light after a few miles of driving.
(No VTEC aswell)


Looking from the passenger side.







2 bolts.
I think either 10mm or 12mm
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Old 08-14-2008, 12:33 AM
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Re: How to change the VSS (Vehilce Speed Sensor)

when you change your vss just change the top part of it...the bottom half doesnt usually go bad and is harder to get out.
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Old 08-14-2008, 12:39 AM
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Re: How to change the VSS (Vehilce Speed Sensor)

o yea, some of my heritage is dutch. Amsterdam is the city where my ancestor(s?) came from to be specific lol

yea do a video of your cel
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Old 08-14-2008, 01:16 PM
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Re: How to change the VSS (Vehilce Speed Sensor)

here's the vid:
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Old 08-14-2008, 02:58 PM
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Re: How to change the VSS (Vehilce Speed Sensor)

Have you gone through the flowchart in the service manual? If the speedo is still working it could be your ECU.

Also, looks like your getting a code 60 from the 4ws system, any problems with that?

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Old 08-14-2008, 05:59 PM
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Re: How to change the VSS (Vehilce Speed Sensor)

Did not checked the service manual.. Im not such a technician and don't think I can fix it myself i guess :s

But I never have problems with the 4ws system. Sometimes when I start the lude, the 4ws light stays on. I then turn off the engine and start it again after a couple of seconds. It doesn't stays on then
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Old 08-14-2008, 06:24 PM
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Re: How to change the VSS (Vehilce Speed Sensor)

oh and the vtec also kicks in at the right rpm... so no prob with vtec also..

this all started when I raced a crx... after the race i started to get this cel.. and the coupel of hours later it started to idle like hell..
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Old 08-16-2008, 01:50 PM
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Re: How to change the VSS (Vehilce Speed Sensor)

Went to the dealer and a local garage. The dealer said that it could be the elect intake valve (cel nr 14) because I am using a lpg system. It is a known problem.

Went to the local garage and changed that part, but the problem is still there.

There was also something happening with the cooling fluid. When I shutdown the engine, there was cooling liquid coming out of the reservoir. The local garage told me that it could be the headgasket which is leaking air out, which can cause air going into the radiator.. he told me something like that.

Also there is leaking a lot of oil out of the oil pan (bottom of the block). Should I buy a full gasket kit and replace everything or could it be that the problem is not in the headgasket?

link to ebay full gasket kit: http://cgi.ebay.com/ebaymotors/HONDA...9177QQtcZphoto
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Old 08-17-2008, 04:15 AM
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Re: How to change the VSS (Vehilce Speed Sensor)

Weird problem. Check to see if it's plugged in or not. And does the speedo and odo work?
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Old 08-17-2008, 10:07 AM
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Re: How to change the VSS (Vehilce Speed Sensor)

speedo, odo, everything works as its supposed to work.. vtec also works..
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Old 08-18-2008, 08:02 AM
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Re: How to change the VSS (Vehilce Speed Sensor)

Use that flowchart that was posted earlier and if all those steps don't fix it then there would probably be a problem in the wiring harness. If you aren't able to do those things bring them to someone that can. GL

p.s. I have had a VSS go out on me and I lost everything, 4WS, Speedo, Vtec, Transmission shift points (AT). Your problem sounds a little more difficult than mine. The speed sensor off a 5 speed accord works in a pinch also, just have to remove a piece of plastic from inside of the plug.
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Old 08-02-2009, 01:17 PM
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Re: How to change the VSS (Vehilce Speed Sensor)

Greetings, Colleagues,

RE: 1990 Prelude 2.1 Si 5MT speed sensor removal and replacement

I have replaced this speed sensor and I am happy to share my experience and annotated photos with you. While other applications are likely to be similar, this information applies to the above vehicle configuration ONLY.

The Honda OEM replacement part is 78410-SF1-505 which includes a keyed drive shaft spindle. NOTE: the original part is flatter than the replacement.

The photos with annotations serve to locate the speed sensor which is found lying horizontally on the superior surface of the transmission case, deep to the coolant inverted-T connector, just to the left, facing front, of the lower radiator hose and deep to the approximately 1-1/2" diameter wiring harness.

Suggested approach, modify according to your experience and good judgment:

1. Disconnect battery negative terminal

2. Lift off and secure vacuum tubing from the top of the rubber air intake connector which connect the top of the air filter to the throttle body

3. Remove remaining vacuum tubing from the rubber air intake connector, remove the screw clamp at the throttle body and remove the rubber air intake connector

4. Disconnect and plug the power steering hose at the power steering pump, detach the hose from securing mounts and secure the hose away from the area of interest

5. Detach the 1-1/2" diameter wiring harness from its mounting points and secure it away from the area of interest - a bungee or rubber strap secured to the underside of the hood works nicely

6. Remove the cotter pin from each of the two transmission linkage cables and disconnect each linkage from its transmission attachment points

7. Remove transmission cable bracket retaining clips from each of the two transmission linkage cables and disinsert both transmission linkage cables from the bracket

8. Remove the three nuts from the transmission cable bracket, remove the bracket and secure the transmission linkage cables away from the area of interest

9. Inspect the heater coolant tubing and replace if worn. You may wish to disconnect the heater coolant tubing in the area of the speed sensor to gain working room; if so, cap the tubing or capture the coolant. NOTE: if you remove the heater tubing then replace the tension spring clamp with a screw-driven clamp - you do not want to have to undo everything to replace a leaking connection

10. Examine the wiring connector of the replacement speed sensor to determine the location and mechanism of the connector locking points. Carefully disconnect the wiring connector and also the plastic wiring stay located approximately 2" from the connector

11. Remove the two bolts that secure the feet of the speed sensor to the transmission case

12. Carefully lift the speed sensor vertically taking care to identify and to keep track of the keyed drive shaft spindle and its orientation, noting that the keyed side is inserted vertically and downwards into the transmission case

13. Inspect and clean the area

13. Orient, insert and verify proper seating of the new keyed drive shaft spindle

14. Carefully seat the replacement speed sensor and secure

15. Assembly is essentially the reverse of disassembly

16. Be sure to verify proper coolant level and replace to specifications as needed

Start to finish for an experienced technician is about 60 minutes


My lawyer made me add the following:

DISCLAIMER
Proper service and repair procedures are vital to the safe, reliable operation of all motor vehicles as well as the personal safety of those performing the repairs. Prudence and care utilizing standard safety procedures and precautions (including but not limited to the use of safety goggles and proper tools and equipment) should be followed at all times to eliminate the possibility of potentially serious personal injury, both during and/or after service. Improper service could damage the vehicle and/or compromise its safety.

Although this material has been prepared with the intent to provide reliable information, no warranty (express or implied) is made as to its accuracy or completeness. Neither is any liability assumed for loss or damage resulting from reliance on this material. SPECIFICALLY, NO WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR ANY OTHER WARRANTY IS MADE OR TO BE IMPLIED WITH RESPECT TO THIS MATERIAL. In no event will I be liable for any damages, direct or indirect, consequential or compensatory, arising out of the use of this material.
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Old 08-02-2009, 04:28 PM
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Re: How to change the VSS (Vehilce Speed Sensor)

that is quite the disclamer, did you really consult a lawyer about this?
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Old 08-02-2009, 05:19 PM
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Icon6 Re: How to change the VSS (Vehilce Speed Sensor)

Howdy, Friend and Colleague,

I took great care to write the suggested procedure as well as the "disclaimer".

Started out as an engineer. When not practicing law I am frequently called upon to tackle technology-related challenges, including automotive tech.

I am very thankful to so many others who participate in forums such as this one for their efforts to be helpful to others whom they don't know and who share their experience and talents.

I shared my after-the-fact experience with tackling this speed sensor to provide practical, step-by-step job details that I couldn't find anywhere else. I provided the disclaimer because, while intending to be helpful, and accurate, and knowing that each configuration may vary from the one I described, everyone needs to understand that he/she is on his/her own and should exercise care at all times.

As we all know, anybody who has been "in this business" for any length of time knows how easy it is to be injured or to injure, or worse, due to inexperience or inattention or both. Auto tech is serious business requiring skill, experience, good mechanical practice and good sense.

Incidentally, I have participated personally in the evaluation of well over 900 work-related injury adjudications.

The annotated PDF file is about 3.5MB and is too large to post here. If anyone would like to have it, provide me with an e-mail address and I would be happy to send it.

Thanks again to all for your kindness and sharing and for allowing me to participate with you.

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Old 08-03-2009, 12:02 AM
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Re: How to change the VSS (Vehilce Speed Sensor)

I agree with you and I wasnt knocking you, just wondering if a lawyer actually told you to add such an in-depth disclamer. Where are you from if you dont mind me asking?
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Old 08-03-2009, 12:42 AM
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Re: How to change the VSS (Vehilce Speed Sensor)

Quote:
Originally Posted by medlaw View Post
Start to finish for an experienced technician is about 60 miniutes.

did mine last week, took me a little under 20 miniutes, but that was also time to clean and put away my tools too, and i didn't move the power steering line though..

but i dont think he is going to need to pull his VSS, since his speedo, odometer and vtec is still working properly
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Old 09-29-2009, 06:21 PM
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Icon5 Re: How to change the VSS (Vehilce Speed Sensor)

Quote:
Originally Posted by BB1_ View Post
I have a 1993 Prelude with the H22.

If your VSS went out then you would have no Odometer or Speedometer. Also a Check Engine light after a few miles of driving.
(No VTEC aswell)


Looking from the passenger side.







2 bolts.
I think either 10mm or 12mm
where can i get this speed sensor vss i need the hole unit and do u have a part #
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Old 09-30-2009, 01:03 AM
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Re: How to change the VSS (Vehilce Speed Sensor)

Also there is leaking a lot of oil out of the oil pan (bottom of the block). Should I buy a full gasket kit and replace everything or could it be that the problem is not in the headgasket?

link to ebay full gasket kit: http://cgi.ebay.com/ebaymotors/HONDA...9177QQtcZphoto[/QUOTE]

that could be that the gasket is bad or was put on wrong, also could be leakin from ur rear seal which is in the carrier plate, or from ur front seal. try to find exactly where the leak is coming from.
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Old 08-14-2010, 05:59 PM
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Re: How to change the VSS (Vehilce Speed Sensor)

hi where do the 2 hoses go form the vss...
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Old 08-15-2010, 01:49 AM
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Re: How to change the VSS (Vehilce Speed Sensor)

Quote:
Originally Posted by koosh View Post
hi where do the 2 hoses go form the vss...
Why jumpstart this old of a thread to ask that? They are power steering hoses.
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Old 08-15-2010, 12:17 PM
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Re: How to change the VSS (Vehilce Speed Sensor)

was that so hard to ans dude dont be rude cuz maybe ppl do know as much has you.....
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Old 11-01-2010, 11:36 PM
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Re: How to change the VSS (Vehilce Speed Sensor)

The power steering is routed through 2 valves located in the speedometer assy, to support the speed sensitive power steering. The steering assist ratio increases at low speeds (city driving, parking) and decreases at highway speeds so high speed lane changes and curves don't feel twitchy or erratic. A malfunctioning VSS will also adjust the fuel program to a "default" setting, typically decreasing fuel mileage.

Cheers
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Old 09-13-2012, 06:40 PM
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Re: How to change the VSS (Vehilce Speed Sensor)

Just want to say thanks for posting this, even if it was a while ago. it really helped me.

cheers
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