Hey folks!
Today I did some routine maintenance on my 2000 4runner:
Changed plugs using OEM Denso's
Changed fuel filter using OEM filter
Drained Radiator, flushed with a garden hose, filled with yota red stuff and burped. (1 gallon of red stuff filled the radiator. After the first and second burp, it hardly went down, I only had to add a 1/4 gallon of water, then I filled the overflow to the top mark)
Everything went smooth until the two hour ride back to Philly from the Poconos. After about 20 minutes of driving, I got a P0125 (coolant temp too low for closed loop operation).
I pull over, turned car off, checked rad hoses - upper hose was hot and rock hard, lower hose was soft and not even warm. I opened the radiator and burped the system again, got a few more bubbles. I cleared the code and got back on the road.
20 minutes later...I get P0125 again, and P0171 (fuel trim - bank 1 - system too lean). I pull over and shut down. Upper rad hose a little softer than before and hot, lower hose is still cool and soft. Jacked up front end about 8", burped system again, cleared code, back to driving.
A few minutes later I get the same 2 codes again, but continued home. Car ran perfect, but it was sucking down a lot more fuel than usual. Once I got home, I checked hoses - upper one is hot and feeling normal (not rock hard), lower hose is again soft and not even warm. Burped the system another 2 times and still getting the same codes and the cool lower rad hose. Also, nothing got sucked from the overflow.
A little related info: A few months ago I had a bad A/F sensor (front sensor). I put in a new one from toyota, it's been good for over 1,000 miles now. So...not sure why i'm getting P0171.
Any ideas gentleman? The car was running perfect before I did all the work. I was trying to get the car ready for a trip to North Carolina, and figured I should take care of some maintenance I've been putting off, and now this! I know the usual issues with these codes (map sensor, a/f sensor, vac leak), but it's odd that they popped up after this maintenance.
Today I did some routine maintenance on my 2000 4runner:
Changed plugs using OEM Denso's
Changed fuel filter using OEM filter
Drained Radiator, flushed with a garden hose, filled with yota red stuff and burped. (1 gallon of red stuff filled the radiator. After the first and second burp, it hardly went down, I only had to add a 1/4 gallon of water, then I filled the overflow to the top mark)
Everything went smooth until the two hour ride back to Philly from the Poconos. After about 20 minutes of driving, I got a P0125 (coolant temp too low for closed loop operation).
I pull over, turned car off, checked rad hoses - upper hose was hot and rock hard, lower hose was soft and not even warm. I opened the radiator and burped the system again, got a few more bubbles. I cleared the code and got back on the road.
20 minutes later...I get P0125 again, and P0171 (fuel trim - bank 1 - system too lean). I pull over and shut down. Upper rad hose a little softer than before and hot, lower hose is still cool and soft. Jacked up front end about 8", burped system again, cleared code, back to driving.
A few minutes later I get the same 2 codes again, but continued home. Car ran perfect, but it was sucking down a lot more fuel than usual. Once I got home, I checked hoses - upper one is hot and feeling normal (not rock hard), lower hose is again soft and not even warm. Burped the system another 2 times and still getting the same codes and the cool lower rad hose. Also, nothing got sucked from the overflow.
A little related info: A few months ago I had a bad A/F sensor (front sensor). I put in a new one from toyota, it's been good for over 1,000 miles now. So...not sure why i'm getting P0171.
Any ideas gentleman? The car was running perfect before I did all the work. I was trying to get the car ready for a trip to North Carolina, and figured I should take care of some maintenance I've been putting off, and now this! I know the usual issues with these codes (map sensor, a/f sensor, vac leak), but it's odd that they popped up after this maintenance.
