I have been reading and searching for some time now on this forum and other places on the net.

I have a bone stock 00' Civic Si, and it has a hesitation around 2900 rpms. It's a brief hesitation and once the rpms are a little over 3000 everything is fine. From what I keep reading, I am thinking it might the TPS sensor???

I have already replaced; Plugs, Dist Cap, Rotor Button, Wires, fuel filter, air filter, and secondary O2 sensor...

If it is the TPS sensor, Where can I get this from? From what I understand the Dealership only sells this attached to a throttle body--?? I have looked some on ebay with no luck?

I know someone out there has to know somewhere to buy these things?

Thanks everyone,

George



Modified by George_ORH at 11:16 AM 6/22/2005

 

Have you checked your tps?

I have a spare that I know works.

 

If its the TPS, you must replace the throttle body. However i believe ppl do dremel out the rivets then add screws or something.

 

Have you checked the TPS first? Grab a multimeter and measure the voltage in the signal wire. Should be .5 volts with the thottle plate closed and around 5 volts at WOT.

 

have you checked the voltage reading at the TPS, it could just need adjustment. I'd check that before spending money on a TPS. if you want to buy one, get a used one froma junkyard.

 

Actually I have not checked the TPS. I'll have access to my multimeter tonight.
Can anyone be more specific on how to check it? Should just the switch be on, Should the car be running, Which wire is the signal wire,etc?

I'm just so tired of this hestitation everyone. I've become as easy going driver and rarely get above 4k rpm's and we all know how little torque this little engine has. UG.
Thanks!

 

Is # 13 the TPS ?

 

#13 is the MAP sensor, the TPS sensor is down and to the left from the MAP in that diagram, it's on the side of the throttle body directly across from the throttle cable quadrant.

 

Thanks, I went out to the car and found what you were talking about. I also found the below on another forum, Maybe it will help someone here.

The tps will throw a code if its bad, if its just off adjustment normally it wont throw a cel if you take a multimeter to the green and yellow wire on the tps sensor when your butterfly is closed your tps should give off .45 as its voltage and fully open should be 4.5 volts or 5.0.

Even if your car hasnt thrown a cell yet you can still short the maint wire down by the ecu to bring the cel code on just in case there might be something wrong. you will have to slice into the rivets with a dremmel or air saw enough to slide a flathead screwdriver into it and twist the rivets off like screws.

if you're getting a voltage reading other than .45 when the throttle is fully shut then your tps may be bad, if its close to .45 then do what I said with the rivets and loosen it slightly. Then have someone hold the multimeter to the green yellow wire and play with the position of the tps until it reads .45 at closed throttle. then tighten the rivets down.

Once you do that then manually open the throttle to wot with the car off but key in the ON position see if there are any abnormal spikes in the reading.

You might just have a vacumm leak somewhere, check where your cruise control hooks up