luvS2000

it's not burnt, if i pull any of sensor it will light up. iac map cam and ckp tps n etc.,

sometimes it stays lean or 0 at idle
but if i fiddle the alarm system it will read negative
wires were all tangled up close to ecu area

ill try to get a service manual asap
but today i fiddled a little more the bark reads 30.4inhg KOEO which is exactly the same as what weather boardcast showed
then i started the engine it drops from 12-10 then stays at 10 for few sec as the engine bogging like crazy sounded like multiple misfire
then it drops down to 9.0 to 8 and STFT started to drop

slalom44

Try cleaning your engine ground contacts. It probably isn't the issue but you need to rule it out.

luvS2000

i'll clean it tmr ,
i found a service maunal for (00-03) on a random website
i tested sensor ground map and tps vss ftp air pump elect detect sensor
following page 11-82
i hook up my ground to door hook thing, there no resistance or continuity for MAP vcc1 C connector 31p
but there is resistance at vcc2 (yel/blu) 8.10ohm , but when i turn to continuity it showed OL and no buzzing.
and i started pulling sensor but idk if i was doing correctly i pulled tps and ohm stays the same with no buzz
So i plugged it back then i tested vss
but when i pulled the vss it showed 588.* ohm but OL in continuity test.

am i doing right?
am i suppose to leave it unplugged one at a time?

luvS2000

i cleaned everything
chcked everything from the manual there is nothing wrong but i haven't check the resistances of sensors
such as ftp and vss ( forgot to check..)
but i'm concern if i did it right or not
like the vvs i disconnected and shows 588 ohm in wire

luvS2000

i tested everything on the service manual
found nothing wrong,
the only thing sensor reading fluctuate sometimes if i touch the alarm system area and tangled wires
i have untaped some of wires and some of wires are not even tapped or soldered they r tied lol..
i'm afraid of taking whole thing out and i don't have much of time.
some of them have butt connector.

those wires are close to behind the starter button and hood opener latch and to the fuse box (12v source?)
and a light blue connector under the steering column

idk what/which wire could cause those sensors to fluctuate
​​​​​​​

luvS2000

does anyone have same problem i'm having?
i went to stealership and couldn't find the problem
they said replace ecu and harness and some sensors lol..

luvS2000

can i use backprobe or short finder on ecu's tps signal?
im thinking if it won't damage the ecu then ill do it and maybe i can trace where the problem is.
i disconnected ECU's C connector and tps fluctuate 0 to 0.4% with KOEO.
i plugged C connector back and disconnect tps sensor
still fluctuates even with engine running and throws tps code with tps disconnected.

i read some thing about c102 junction connector so i took it out and it checks out fine, no cut or exposed wire.

luvS2000

update: just wanted to share. no good news.
i went to dealer and changed engine harness, cuz thats what they told me it will FIX the problem. but it is still doing the same thing! they have not figured out what is causing the problem.
if cant be fixed for under 1k im going to part out and sell this car.