ka24de TPS adjustment problem

[moso]

ok so i have a freshly built kade. 47 miles to be exact and im trying to adjust my tps. i started by checking its resistance and came up with some strange results. following the guide i checked the resistance between the first and seccond pins of the tps with the clip facing up. my multimeter is set on 20k ohms



throttle open pedal pressed



throttle closed pedal released



these results seem completely backwards to the guide or im reading something really wrong. either way im not so shure and could use a little help. another thing to keep in mind is this is a kade with a manual ecu harness and ecu with a auto tps. it runs and idles fine for the most part with a small hesitation arround 3krpms.
Modified by moso at 12:57 PM 9/21/2009

[liquid_cool]

this will be a fun one for you and blow your mind a bit...its not the TPS..its the throttle cable bracket...its probly bent as they are week..if you slightly bend it up..then reajust idle screws, it should fix your issue..if your allways mashing on the throttle then it will sometimes bend that bracket..those brackets are junk..lots of guys make new one out of there garage that are beefy and wont bend out like the OEM ones do..try this..and if still no luck..then we can work ya throu it..good luck...ohh dont fear..the idle will be high untill you re-adjust it..

[moso]

oh no. the idle is not high. on the contrary, its low. not to mention i just installed the bracket, cable, tps, throttle body, and everything else. every nut and bolt on this motor has been removed, cleaned, and replaced in its correct position just like it was when it came from the factory. unless it had to do with the emissions all thats gone. you couldent even tell it was ever there. the issue isnt with the adjustment so much as i cant figure out why when every guide and the fsm says that it should show 2k ohms closed and 10k ohms open and mine says 8.5k ohms CLOSED and 2k ohms OPEN? truthfully i will probably replace the tps tomorrow just to see what the new one reads.

[moso]

so today i went out to the j/y and pulled a tps off of a maxima or altima. dunno. anyways it was a kade 5spd and had an identical tps. same results. what the he** am i doing wrong? the guide discribes the tps connector from the ecu side not the tps side. i had my multimeter in the wrong place

[liquid_cool]

did you remove the idle air controll valve too?...if so..you need to adjust the idle from under the throttle body now...but if you get a symptom of a minor fuel hesitation like i did when i had this issue..then its allso the bracket..try adjusting the idle with the throttle adjustment screw just under the pully area on the trottle...it takes a allen type driver and a 8mm wrench...get back to me when ya try that out.

[the converted]

I was looking at the guide, and it looks like IT is backwards, not yours. I wouldn't worry about checking the resistance numbers and just measure the voltage at idle and adjust it to between .45v-.55v.

[moso]

yea i got it adjusted today. i had to get another tps. i think it was off an altima. who knows. the point is the guide is right it just describes the pinout from the wire harness side not the tps harness side. quite confuseing. and i did end up checking the voltage and got it set at .51v now. very nice. also (liquid) the screws on the throttle body are for adjusting the throttle plate position at rest and there is also a stop for WOT. its not really for adjusting your idle speed. there is a guide in the FSM but long story short its the screw on the IACV at the back of the intake log that your supposed to use to adjust the idle.

[liquid_cool]

yea i got it adjusted today. i had to get another tps. i think it was off an altima. who knows. the point is the guide is right it just describes the pinout from the wire harness side not the tps harness side. quite confuseing. and i did end up checking the voltage and got it set at .51v now. very nice. also (liquid) the screws on the throttle body are for adjusting the throttle plate position at rest and there is also a stop for WOT. its not really for adjusting your idle speed. there is a guide in the FSM but long story short its the screw on the IACV at the back of the intake log that your supposed to use to adjust the idle.

moso......i no longer have a idle air controll valve..egr or any other crap on my intake many...and yes..you can adjust idle with that screw/nut under the throttle bodly's pully..thats the old school way ....

the way the idle air controll valve works ..is to let a slight amount of meterd air flow by holding said idle when the throttle is closed...

The now infamous screw under the throttle body can be used in the same manor, by holding the throttle plate slightly open letting in meterd air allso to controll idle..works the same way and has, ever since the invention of the throttle body!..the only real diference in the 2 methods is the (IAC) is controlled by the (ECU)..where as the now new idle screw under the throttle body is controlled by you.

hope this clears that up sire...man..nicco is such a learning experience..god nicco rules!

[moso]

in that case, yes your right. i havent stripped my intake down that far. i got my idle problem all sorted out. im really waiting for my morning drive tomorrow, usually in the morning if i dont let it warm ALL the way up it will try to die when i apply power in seccond gear. if i blip the throttle a few times with the clutch in it usually clears right up and is smooth sailing from then on out, but you can still tell that its cold. once it warms up it runs super nice, maybe a slight lag arround 3500rpm. but i havent cleaned my maf yet, i will do that tomorrow. 78 miles when i shut it down this evening.

[moso]

83 miles. ran fine this morning no stumble, first time i have seen high idle. i believe the hesitation at 3500rpms is gone but i rarely go past there so im not sure, going to clean my mafs later.

[liquid_cool]

83 miles. ran fine this morning no stumble, first time i have seen high idle. i believe the hesitation at 3500rpms is gone but i rarely go past there so im not sure, going to clean my mafs later.

you rarely go past 3800 rpm?..your missing the intire fun band of this motor sire..rev a little higher..like inbetween 4500 and 5500 rpm..its a sweet spot!..have fun man..glad its comin together for you.

[moso]

it only has 86 miles. it had its hard runs to seat the rings now im being quite nice to it until about 500mi. ocassionally it sees 4krpms but not often and never sustained, soon tho soon.

[liquid_cool]

it only has 86 miles. it had its hard runs to seat the rings now im being quite nice to it until about 500mi. ocassionally it sees 4krpms but not often and never sustained, soon tho soon.

depending on your rings..you may have to wait till 2000 miles before they fully seat sire..there are a few exceptions thou..but im shure your not running nitrided rings or some off the shelf crommoly ones....dont be afraid to break them in proper like..you can rev no problem..it might actually help seat them...just let the car warm up to operating temp first..so you make your best seal possible..then have fun..at the track!lol

[moso]

accually im running wiseco pistons with black pro cut rings. im reving it out a little more now that its got 200mi on it but i wanted to make sure i got a few good oil changes before i started really running it.