When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I have this code on my 1989 E150 4.9. Says no HO2S switching detected. Engine idles smoothly. Comes on after about 15 minutes of idling. (I use van mainly for newspaper deliveries in town other local errands, with occasional out of town highway driving) When I shut it off and restart, the check engine light stays off for about 10 min, before coming back on.
I took it on a 50 mile round trip on the interstate @ 65 mph and the light never came on. Should I replace sensor? I saw no damaged wiring
The heater wire may just be burned out in the sensor. The code stays off at highspeed because the exhaust manages to get the sensor hot enough without the heating element.
At least, that's my take on it.
It's only a $20 sensor. I'd go ahead and replace it.
The heater wire may just be burned out in the sensor. The code stays off at highspeed because the exhaust manages to get the sensor hot enough without the heating element.
At least, that's my take on it.
It's only a $20 sensor. I'd go ahead and replace it.
That's kinda what I was thinking, the heating part isn't working at the lower speeds. I can get one for $30, is easy to get to
Spend a bit more and get a new Motorcraft one (ebay new old stock)
Yes, bitchy to get out on a 89
Use the special socket or cut the connector off and use a box end 7/8 wrench
Good luck
007
I just looked back and I paid $36.60 form RA on closeout in July 2020. Today they want $62 plus shipping. DY-605, FO3Z9F472A fits your van Jeff. if you can find a Motorcraft, for 30, grab it! RockA shows the orignal 1989 number to be E93F9F472AA
The black O2 sensor wire was completely broken in two. Replaced sensor and now check engine light is out. My gas mileage should improve now that the sensor is working as it should
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.
