Pressure? Positive or negative?
#1
#2
http://www.tomco-inc.com/techinfo.aspx
http://www.tomco-inc.com/Tech_Tips/ttt36.pdf <<This link should explain DPFE operation for you.
http://www.tomco-inc.com/Tech_Tips/ttt36.pdf <<This link should explain DPFE operation for you.
#3
Unless there is a severe blockage in the exhaust side of the EGR tube, there should never be anywhere near enough vacuum to collapse the factory DPFE hoses.
#4
Well I have removed the DPFE sensor and found that the two tubes going to the sensor are very soft just before they connect to the sensor. Thus having crap in the ports of the sensor. I will clean out the "crap" in the sensor replace the hoses and see what happens. I have had two codes time and time again. The codes are Bank 1 lean and Bank 2 lean. Also when under acceleration in gear my vents will go to the default position (defrost). Which I have not found any vacuum leaks. But here is what I have done.
Replaced O2 sensors, replaced vacuum canister (thought check valve might have been bad), replaced half collapsed line going to TPS, cleaned MAFS, replace air filter, cleaned and checked IAC, checked every vacuum line from engine to interior panels, clean the EGR solenoid filters, hooked vacuum tester to top of EGR valve and applied vacuum to it and had a slowed reaction from engine which is meaning the EGR valve is opening and closing. What am I missing for these codes?
And thanks Earl43P awesome site saved to favorites
rwenzing- I was thinking that is wasn't enough to collapse them but needed reassurance so thanks.
Replaced O2 sensors, replaced vacuum canister (thought check valve might have been bad), replaced half collapsed line going to TPS, cleaned MAFS, replace air filter, cleaned and checked IAC, checked every vacuum line from engine to interior panels, clean the EGR solenoid filters, hooked vacuum tester to top of EGR valve and applied vacuum to it and had a slowed reaction from engine which is meaning the EGR valve is opening and closing. What am I missing for these codes?
And thanks Earl43P awesome site saved to favorites
rwenzing- I was thinking that is wasn't enough to collapse them but needed reassurance so thanks.
#5
If everything under the hood seems OK, I would check the HVAC vacuum controls under the dash. There are probably 3 vacuum servos and several vacuum lines. Any leak there could give you both of the symptoms - lean codes and defrost default.
What year is your Ranger? Which engine?
#7
#8
#9
finally no check engine light! What I think was happening was the O2 sensors werent feeding correct results of my emission to the pcm and also the DPFE wasnt able to read correct information cause of the clogs I found. As a result of fixing both I have more response from the engine, a little lower idle and a bit better gas mileage. Now time to get more air intake for even better gas mileage. Thanks again for the help fellas.
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