14 replies to this topic

[daz_ep2]

well brought a jperformance mani and fitted it today i reset ecu after fittin it just been for a drive and at the end the cel light came on i connected my scannor and the code came up as p0131 02 sensor low voltage

ive reset the cel light but im hopin it dont come on agen but if it does then does anyone have any advice

[martinj46]

Perhaps the sensor hasn't been put back in correctly?

[daz_ep2]

Perhaps the sensor hasn't been put back in correctly?

thats the think i never touch the senser cus u dont have to touch it the put a mani on

[flyinsoloEU8]

is it just souly the manifold you have on , if so could just be coincedence taht the light has come on just keep an eye on it , sometimes they light comes on for a slight difference in either fueliing voltage etc

[daz_ep2]

is it just souly the manifold you have on , if so could just be coincedence taht the light has come on just keep an eye on it , sometimes they light comes on for a slight difference in either fueliing voltage etc

well i reset agen earlier then went for a drive and on the way home it came on agen

i used alot of wd40 on the nuts and bolts near the sensor maybe some got on the sensor
i will have to wait and see if it sorts it self out

[ETcivic]

Thought i,ll revive an old topick rather than get ok every ones tits buy makeing a new one lol. i thought it 'll be a good idea to reset my ecu because ive got a toyo manni didi it yday all going well took fuse out left for half hour repace idleed till fan came on nd off cople of times all cooshdey turnt it off 5 min later started her up nd cel light came on intantly any help what shall i do ? Gona check the sensors when i get home from work but i dont see why it came on after nd not during the lerning prosedure ?

[BassKicksDan]

I'm guessing the O2 sensor is working out the ammount of oxygen coming out of the engine to adjust the fuelling?

So the more oxygen coming out of the engine shows a higher voltage output from the sensor? And the car will increase the ammount of fuelled burnt in the engine.

If thats the case then your performance manifold with a bigger bore will decrease the exhaust pressure and probably decrease the voltage from the sensor too.

(Might be talking out of my ass but just a thought )

Have you noticed any drop in power?

[ETcivic]

I felt a lil gain in the mid to high range a lil loss when i put it on a lil wile ago since i reset ecu it runs just the same was idleing fine last night and was all good during the lerning /idleing perioud no light swiched it of for just a cople of min the as soon as i started her up had cel light it runs ok even feels a lil beter just duno what could have changed in the cople of min it was off thanks for the help dan any more thoughts would be grate

[BassKicksDan]

I might be fuelling fine and you are still getting the gains. It's just the decreased pressure is probably confusing the sensor a little bit (Fuel in, air in....hardly anything out?! What?!).

[ETcivic]

yeah i exspect so im just confused as to why it never came on befor or during ecu reset only after i turnt it off nd back on again nothink had changed nothink when it was off have you reset your ecu bud?

[Magnificent_One]

I have the same problem... DOn't know what it is tho...
Dealer couldn't help me eighter
I have the P0135 o2 sensor heater circuit malfunction. Car runs fine to so it's only the light that wo'nt go off...

[ETcivic]

would it be a good i dea to try and reset it again iv also bypassed the throtle coolant lines that would efect it wouldent it just remembered shal i put it back and try again any thoughts ?

[ETcivic]

iv fixed it reconected the cooling lines nd reset again light off

[daz_ep2]

well brought a jperformance mani and fitted it today i reset ecu after fittin it just been for a drive and at the end the cel light came on i connected my scannor and the code came up as p0131 02 sensor low voltage http://epcivic.com/forums/public/style_emoticons/default/icon_redface.gif

ive reset the cel light but im hopin it dont come on agen but if it does then does anyone have any advice

well goin bck to my original post all i did was reset it agen and voila it work the cel light didnt come bk on http://epcivic.com/f...tyle_emoticons/default/icon_thumbup.gif so if it comes on for u just reset it agen

[ETcivic]

yeah all good now