3rd gen running issues.

[4runner269]

3rd gen running issues Updated!!

Currently have a running condition. In the morning if i dont let my 4runner sit for about 5-10 mins to warm up, it has no power and runs like poo, can barley drive it as it falls on its face. But if i do let it warm up it runs like a champ and has power. Now ive noticed once or twice when it did act up it almost sounded as if it backfired threw the exhaust? Look on the local toyota dealership website and ran the vin, comes back as the engine was rebuilt at 180xxx and currently has 212xxx on it. Here are the codes.

PO120 TPS malfunction
PO125 Closed loop fuel control insuf coolant temp.
PO130 02 ckt malf.
PO133 02 ckt slow to respond.
PO440 Evap malf.

 

[theizzardking]

these don't really need "warm up time"

PO125 Closed loop fuel control insuf coolant temp.
PO130 02 ckt malf.
PO133 02 ckt slow to respond.

clean,test,replace o2 sensor

PO120 TPS malfunction

try cleaning, testing replacing

PO440 Evap malf.

could be related to the o2 sensors or Independent of and tied to the charcoal canister system or vsv...

start with o2 sensor and work your way through, find the fsm and these codes related to which 02 sensor it is, i believe the p013x's are the front ones, but double check as i'm talking from my butt now, all of your issues though seem to be centered around bad o2 sensors..

 

[4runner269]

these don't really need "warm up time"



clean,test,replace o2 sensor




try cleaning, testing replacing



could be related to the o2 sensors or Independent of and tied to the charcoal canister system or vsv...

start with o2 sensor and work your way through, find the fsm and these codes related to which 02 sensor it is, i believe the p013x's are the front ones, but double check as i'm talking from my butt now, all of your issues though seem to be centered around bad o2 sensors..

Thanks for your help, I'll get on rockauto and run some quotes. Any brand i should go with? You wouldnt think itd need warm up time but like i said, if i dont let it warm up and take off while its still cold it had no power and doesnt wanna move.

 

[Dan.3]

Always OEM with electronic parts. Always

 

[theizzardking]

Thanks for your help, I'll get on rockauto and run some quotes. Any brand i should go with? You wouldnt think itd need warm up time but like i said, if i dont let it warm up and take off while its still cold it had no power and doesnt wanna move.

OEM=denso , you don't need the dealer for this to be an OEM part.

 

[4runner269]

Sounds good, Looks like i'll start on getting those 02 sensors checked out and go from there:thumb:

 

[4runner269]

Heres an update. Replaced the TPS, Coolant temp sensor, ( in the front i believe its for the engine) Fuel filter so far. Got rid of majority of the codes execpt for the PO125. So now do i need to replace the Thermostat or 02 sensor? Reason i ask is the guy at the parts store was telling me a sticking thermostat would throw the 125 code??? Also ive noticed it runs a lil bit better but still has an issue with taking off and the rpms start to go down and engine feels powerless for roughly a minute or two and then will suddenly go back to normal operating and have full power?? 4Runner guru's help!!!

 

[4runner269]

Bump this back up, Just ran to the store and it did the same thing. Also as ive been driving it really feels like its lacking on power. Could really use some gear heads thoughts/comments/concerns/:frusty: