Has anyone found a replacement Knock Sensor for the 1985 F150 5.0L MFI EEC-IV?

E3AF-12A699-AA

5F 11A

TIA.......

 

Did you break it off or are you getting a code?

 

I think I found *one* OEM variant once, but that was over 5 years ago.

There is always the aftermarket:

More Information for AIRTEX/WELLS 5S2211

 

Applications: 1981/89 LTD/Crown Vic/Grand Marquis 351W; 1986/87 Mustang/Capri 5.0L; 1986/89 F150/250, Bronco & Econoline 302 EFI

 

Dave - Not broken…. We pulled the Knock Sensor (KS) out by accident thinking it was the ACT (Air Charge Temperature) Sensor location. It was about half way back at the bottom of the Intake on the driver’s side.

My 85’ EVTM did not have the sensor location page for the 302 EFI motor, but I knew where 3 sensors were located, just didn’t know which one was what, they all have the same connector. Maybe we could have cleaned the 0il/grease off the wires and tried to match the colors, which don’t always match the 85’ documents, but only thinking about this now.

So when we pulled the KS out I thought it was the ECT (Engine Coolant Temperature) Sensor, I knew it was not the ACT, seen that one before. When I ran the numbers, I found out it was the KS. I was aware of the existence of a Knock Sensor, but never had the occasion to remove one on purpose. It looks kind of like a Coolant Temp Sensor.

So we pulled out the next one over to the left, and that was the ACT. I wanted to look at the ATC and take some measurements. Assumed it may be 32 years old, and gummed up like the EGR System was. It was surprisingly clean, so maybe it’s not as old as I’m guessing. I have some measurements to check before I give it a passing grade.

Now; then we knew the 3 sensor location was the ECT (Engine Coolant Temperature) Sensor, up around the front. Since then, I found that my 86’ EVTM shows the location of these 3 Sensors on the 302… figures..

Dave – No codes these days, we cleared them all, but I think I remember a 25 Code once or twice months ago, but I will have to check my notes. We have cleared all the codes over the months, vacuum leaks, vacuum solenoid, Idle adjustment, timing, O2 wiring, Throttle Air Bypass cleaning, plugs, etc.

But now that I have had the KSensor in my hand, I want to test it. From my reading, it seems to be an accelerometer, which I worked with on a past job. I have some KS test procedures, and will perform them this month sometime. I’ll have to find a 4oz hammer…… I need to clean the connector as well.

I’m working a Cold Start Idle inconsistency at the moment, no codes, but many things to check, test, and verify before I come screaming for help.

Chris – Thanks, I’m just checking options in the case I need one. Since I had it in my hand, I jotted down the numbers that were on it and learned something. When I googled the numbers I had, I came across 2 dozen lads looking for obsolete Knock Sensors. There is one for a different model for $175, that was scary...

Bill – Thanks for the corrected Part Number, I’ve seen you refer to the Engineering Number vice Part Number a few times. I’ll make note of the other applicable models as well.

All- I will post my test results when I get to it again. Thanks for your input…… vinny

 

I see you said something about a hammer, so you know about the hammer trick during the goose test when pulling the codes?

 

Only recently, that's why I mention the hammer..., and I have not performed it, I missed that somewhere along the way. I'm out there tomorrow, so I will give it a go.. Thanks

 

Discontinued......

http://www.opticatonline.com/part/ai...or#engine:1773

 

Most everything for this vintage truck was discontinued long ago, Rock tends to have lots of NOS that the mainstream retailers no longer want.

That page lists some alternative part numbers, too....

Alternate/OEM Part Number(s): E3AF12A699AA, E3AZ12A699A, F3DF12A699A, SU250