WTF? What would make this happen?

2000 Civic SI - (Taking off those white faced gauges :D iHATEthem)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mfoehrkolb &raquo;</TD></TR><TR><TD CLASS="quote">WTF? What would make this happen?
</TD></TR></TABLE> Extremely responsive turbo?

I wonder if you don't have damage to the teeth on your speed sensor. Pull that little bugger out of there and visually inspect it and inside the case. Maybe it's something obvious.

 

located on the gearbox i believe? what if it's something to do with the ECU side?

 

i have the same problem!!!
i think its the pins, the contacts are bad or somthing , try to spray it...

http://www.youtube.com/watch?v=qWYw-Qsvmb8

 

The speedo did get wet. it was a downpoor the other day here. Hit a puddle because i couldn't even see out my windows. (my house got flooded &gt;&lt The speedo stopped working. So the next day i disconnected it and tons of water on the plug. I since then dried it out and all, and it has been acting funny since. I am thinking the connectors might have a bit of corrosion built up on it. Dunno though.

Also, if im sitting still. It jumps whenever i shift, and not if im not touching the shift ****.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hatchling37 &raquo;</TD></TR><TR><TD CLASS="quote"> Extremely responsive turbo?

I wonder if you don't have damage to the teeth on your speed sensor. Pull that little bugger out of there and visually inspect it and inside the case. Maybe it's something obvious.</TD></TR></TABLE>

--- That wouldn't be a problem now would it?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mohsin &raquo;</TD></TR><TR><TD CLASS="quote">located on the gearbox i believe? what if it's something to do with the ECU side? </TD></TR></TABLE>

--- It is right on top of the trany, below the intake arm. It's not ECU side for sure, i checked the code it started throwing with my ECU reader thingy my dad has. It was throwing a VSS code.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by magefa &raquo;</TD></TR><TR><TD CLASS="quote">i have the same problem!!!
i think its the pins, the contacts are bad or somthing , try to spray it...

http://www.youtube.com/watch?v=qWYw-Qsvmb8</TD></TR></TABLE>

--- Spray it with what? WD40? Paint ?

 

its an alcohol spray , specially used for cleaning electronics contacts and electornic terminals...
u can find it in every store...

 

your VSS/alternator fuse might have blown -- although unlikely

 

i had a similar problem with my car, but a few weeks later i blew the head gasket so i just sold the whole car.

 

This is a very common problem with 96-00 Civics. I have the same problem with mine but found it that it's the ecu after changing the VSS 4 times, changed the pigtail on the engine harness, swapping clusters and swapping ECUs. The only time it doesn't jump around is when I put my Crome chipped p28 in.

It's caused when water/coolant/moisture gets in the plugs and corrodes the pins (most of the time).

I would start out with the alcohol spray that is mentioned above and then proceed from there with the cheaper replacements moving to the more expensive ones.

It's not going to be the fuse b/c if it was, the speedo wouldn't work at all...

Good luck...

 

It has been acting normal now. When i first start up the car it goes crazy, but the more i drive it the speedo gets normal. I am going out to buy some of the spray. Hopefully that works because it's lame not knowing your speed. If that doesn't work i have 2 extra VSS, and 3 SI computer's laying around i can play with. Hopefully one of those works.

 

I had the same problem check the #15 fuse on the driver kick panel.

 

had the same thing on my integra, clean out the plugs and made it worse, i just went to a junk yard and cop a vss off an eg and it works beautifully!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hatchling37 &raquo;</TD></TR><TR><TD CLASS="quote"> Extremely responsive turbo?
</TD></TR></TABLE>

Im thinking VTEC!

 

MAN i have this stupid problem.. I fix it by pressing the trip meter reset button the [freak]in things goes back normal again.. how does that work?

 

im got the same probelm too. its driving me carzy. whats this spary called and what do you spray it on?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mfoehrkolb &raquo;</TD></TR><TR><TD CLASS="quote">The speedo did get wet. it was a downpoor the other day here. Hit a puddle because i couldn't even see out my windows. (my house got flooded &gt;&lt The speedo stopped working. So the next day i disconnected it and tons of water on the plug. I since then dried it out and all, and it has been acting funny since. I am thinking the connectors might have a bit of corrosion built up on it. Dunno though.

Also, if im sitting still. It jumps whenever i shift, and not if im not touching the shift ****.</TD></TR></TABLE>


This happened to me before. I had blown a radiator hose and the coolant got all over the VSS. No amount of cleaning or drying would save it. It kept jumping like that untill it finally died. Replaced it with a new one and ALL PERFECT!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by andrew__g &raquo;</TD></TR><TR><TD CLASS="quote">whats this spray called and what do you spray it on?</TD></TR></TABLE>

Presumably the OP is talking about using contact cleaner. Essentially we're talking about alcohol or solvent-based cleaners designed for electrical contacts. There are lots of brands on the market. Here's the ones I've typically used over the years (I'm an aircraft mechanic by trade):

LPS Contact Cleaner

...but this particular brand is kinda expensive (like everything ELSE designed for aircraft). In the old days, I'd use a bottle of 1,1,1 tri-cloroethane and a Q-tip, but then again, I'm over my child-fathering years and my wife doesn't complain about the twitch

The key thing here is that you have to get the mating metal surfaces of the connector clean of all grease, oil, dust and oxides, and contact cleaner does that for you.

Any decent FLAPS should have something like this. DON'T use WD-40 or ANYTHING that leaves a residue - that WILL cause problems, potentially big ones. (Like an unlikely worst case, fire.)

And also, presumably the OP is talking about spraying all the electrical connections along the path of the signal, and probably means either the plug on the back of the cluster or the one on the speed sensor - I think I'd grab a wiring diagram, start at the speed sensor and follow the signal all the way back to the speedo, spraying every connector along the way.

Get dirty, have fun!

 

Do you guys think it has something to do with my cluster since it goes back to normal after hitting the trip meter reset button?

 

Yeah, and that would make me think it's a mechanical problem rather than an electrical one.

(I'm assuming you have a standard mechanical trip/odometer, right?)

I think that if it were me, I'd still do the cleaning procedure we were talking about above, but if you had no joy on that, I'd be looking for a new speedo...?