You will need; Oxygen Sensor Socket Anti-Seized Penetrating Oil Sometimes it will take 15 minutes or take a few hours it depends on your luck⦠Okay, here's something else to consider for an aging F150, maybe other Ford products too? When they break the linkage will just hang there. Over time this makes a hole in the tube causing a large vacuum leak. Water in a spray bottle can also be used to find cracked hoses just listen for the idle change. Check for a dirty fuel filter and proper fuel pressure. Cylinder numbers: 1 2 3 4 5 6 Front of Vehicle. It may get a P0171 with it for a 6 cylinder. My three catalyst converters had to be replaced.
If you don't have a scanner, skip this test. Check for shorts to ground, short to power, open circuits, etc. With a you can check for fault codes to find out why the light came on in the first place. During cold engine operation below 140°F 60°C , the thermowax is contracted enough to allow the valve to open. The problem is that another vac line leaves it and I was concerned about touching a relay or line I could not get a part number for.
The test fails when the fuel control system no longer detects switching for a calibrated amount of time. Both are causing a vacuum leak that is messing with the idle. Check for bubbles in radiator. The Expedition's Error Codes Easy to see and nice to have a print out of the codes. Just make sure you get the right one as they are Apple and Android specific.
Coolant should be reused unless it is contaminated or is several years old. Spray silicone on all exposed rubber elbows from time to time. The rubber was still good except for the cracked part. My computer is showing system too lean. It seems as though your Idle Air Controller isn't responding fast enough.
It detects the amount of oxygen in the exhaust gas compared to the outside air. Also remove the big 3 inch diameter hose from the throttle and clean out the throttle body, if dirty. Basically this means that an oxygen sensor in bank 1 detected a lean condition too much oxygen in the exhaust. Do what you can reach, gently! Trouble code P0171 means: Fuel System Too Lean Cylinder Bank 1. I reset the computer and the check egine light is off.
Look for cracked or dislodged vacuum hoses. Cracked Vacuum Line to Throttle Body On the passenger side of the throttle body a plastic line connects to a rubber boot to the throttle body. It's difficult to reach the rear bolts with the engine assembled. These things work together to deliver the correct amount of recirculation based on engine temperature, load, etc. Found out that I had a cracked head. I find it's best to take it off and spray it with electronics cleaner or brake cleaner.
You could hear this one with the engine running. It sounds like a problem that could be caused by a faulty idle air control valve, but getting the codes will eliminate the need for speculation and should narrow down cause of the problem. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. The gas cap seal appears to be intact. Causes A code P0171 may mean that one or more of the following has happened:.
Engine coolant is directed around the thermowax, which opens and closes the valve. If it matters, the van was taken out into a snowstorm the night before. It is part of the vehicle emmissions system, and is used to reduce combustion temperature and pressure to control Oxides of Nitrogen. I suggest you to click the help links shown below :---- Check Engine Light On car? Check this forum thread out:. When the valve is cold, blow through the air inlet and verify that air flows freely through the valve. Compare specs with manufacturers specifications. In this case i suggest you to click the link below :---- Check Engine Light On car? Sorry for your trouble and I hope this helped.
Plug it back in and it surges and d. The next test requires a scanner. As the coolant heats, the thermowax begins to expand. Trouble code P0174 means: Fuel System Too Lean Cylinder Bank 2. For now just the one hose was cracked. I chalked it up to me not changing the plugs yet.