so this happened very randomly and wont go away i thought it might have been my battery or alt but i changed my battery and my alt seems good.

when i have the tps plugged in the car runs great until i put some electronics on like heat,stereo,and headlights. then the car starts bogging, and wont allow me to go past 3k unless i floor it

this only happens when electronics are on either hids and stereo or heat and stereo, whatever

when i disconnect the tps, its fine other than cel 7(tps sensor), the idle fluctuated a bit but it runs good and doesnt bog while electronics are on. i just changed the tps too but same thing, and i calibrated it, to .50 at idle


what could be wrong
thankyou in advance I need this car running its my daily


EDIT
now when i unplug the tps engine runs good, but also when i unplug the o2 sensor the engine runs good too, but engine light shows
still have no idea, tps was changed
i want to change o2 but have no idea if i should or not

 

sounds like you may have a IACV or FITV problem. I would try cleaning them and see if the problem persist. I had the same problem but my fix was the dizzy. Someone had clocked it all the forward(retarded timing), turned it all the way back to advance and run 93 through it and now she runs great

 

yeah but
how come i take of my sensor it runs fine and oly runs bad when sensor is plugged in under load

 

Anyway your tps and map sensor could be switched up.

 

no the wiring seems to be good, and the voltages are pretty close to the tps sensor being tps

never mind, they are not switched up

 

Mine did the same thing. I havent got the slightest Idea why. It could be, because the ecu uses a default reading to the TPS sensor when unplugged.

 

kinda in the same boat. my idle bounces on cold start. i unplug the tps and it idles high but doesnt bounce. i plug it back in and it doesnt bounce. once the motor warms up it idles perfect. kinda weird.

also, if i dont unplug the tps on cold starts it will bounce until motor is warmed then it idles perfect also.

i cleaned the iacv and have no leaks. also, i'm running an obd2 TB so it has no fitv. i'm stumped...

 

Bingo.

 

well any luck guys i dont want to ride all ghetto with no tps plugged in
cars parked now till i get it fixed

 

ok i guiess i might have a good sign
when i plug the tps in and unplug the o2 the car seems good, so tps is good to go

now
im assuming o2 is bad

 

Bingo!

 

THEIR Not i checked and switched them

it was running for a month fine

 

did you check all your grounds? 3 main grounds. tranny to chasis, head to chasis, and thermostat ground

 

yeah but ill double check tommarow
just incase

the main thing is o2 unplugged or tps unplugged, runs fine

 

bump chcked everyhting, again
if i plug a spare o2 into the plug of the o2 sensor, than the car runs good also, could it be a bad o2 sensor
also the stereo works alot better when the o2 or tps is disconnected, once i connect them the cd player skips like crazy

 

bump

 

bump anyone can help
goign to get alt rechecked today

 

hey guys just tested and this only happens when engine is hot, or i think when thermostat opens up

this morning i started it and held it at 3k with headlights and heat on and it was good until the engine temp went up to normal operating temp

 

This is a good argument to troubleshoot the (primary) O2 sensor. Have you tried unplugging it?

I still think that the charging system may be one problem, so I also agree with the idea of rechecking the alternator.

 

yeah i tried unplugging and its fine because it goes into open loop
but yeah ones it warms it does it, not like starts to do it but like an on off switch, turns on

ill get the alt off and check it, damn thing is in the worst spot
but ive been busy putting the interior in today so ill get it checked tmmarow

 

With the O2 sensor unplugged, the engine no longer has the problem even when hot, right? If so, this is a very strong argument for replacing the O2 sensor.

 

yes no problem hot or cold, and yes i thpought that too with my tps, when unplugged it never caused a preoblem so i changed it and same thing

when the car goes into open loop i dont think it used any sensors
so it could any of the many sensors that are bad

 

i have a spare o2 but its got diff colors and came off my prelude
its a 4 wire but diff colors will it work or not

 

The difference is that the TPS is needed whether the engine is cold and hot whereas the O2 sensor is ONLY needed when the engine is hot. Do you see the distinction?

 

hmm i see
still confusing me as how this only happens when theirs a electrical load on engine but
today i took the alt out and what i found were wired hand twisted together which were very ghetto, this alone coul have caused a problem but when i checked the wiring it was hooked up wrong also

it was obdI harness to obdII alternator plug and it was hooked up wrong from what i can see so far

i might assume this could have been the problem maybe


o2 ensor was checked though today and its doing the same thing lol


and tps is not realy needed at all, i unplug it and theirs no difference when plugged or unplugged, dont know why but i guiess its there