F150 Higher Idle 1100-1200 rpm

[cousinabe]

Port 2006 LF150TXR starts,1200, then kicks down to 700.

Stbd 2005 F150TXRD idling at 1100-1200 rpms.

ISC looks ok. Clicking. Also swapped with port motor. No change.
t-stat not stuck open. Cleaned and tested. ok.
thermo switch had frayed wiring, cleaned and taped. wires could have been crossed at times. tested variations of connected, disconnected and jumped. No change.
cleaned throttle body area. disconnected linkage. everything looks seated correctly.
Noticed fuel rail schrader valve had a slight drip, tighten cap.

I have a multimeter, an older winky blinky (90890-06865) that I used on my 1997 S225V/L225V motors.
I plugged wb into both F150 motors and got nothing. The F150A manual calls for winky blinky diagnostic flash 90890-06873) Is there a way to make this work?
Do I need to get YDS 1.33?

[fairdeal]

an older winky blinky (90890-06865) that I used on my 1997 S225V/L225V motors.
I plugged wb into both F150 motors and got nothing. The F150A manual calls for winky blinky diagnostic flash 90890-06873) Is there a way to make this work?

Do I need to get YDS 1.33?

I would think a light bulb is a light bulb,
and that you just need to have it connected to the correct wire (and ground)

But I would also (did) spring for the eBay YDS software/cable

[TownsendsFJR1300]

The ISC is clicking when turning OFF correct?

That cold idle is pretty high too..(60F water on mine, cold idle is about 800 for 2-3 minutes, then down to 700)

* Also, is the boat (engines) "new" to you? Maybe a little prior history, work done, maintenance?

[cousinabe]

Motors are on a friends boat. I have maintained all fuel filters, vst, plugs, etc. I have exp with OX66 motors.
Def a switch or sensor problem keeping stbd motor at 1200 rpm. Was working fine last season.

Thinking problem is related to:
A stuck or open t-stat. (no)
ISC valve.(no, is clicking when turning off and also swapped with port motor to test)
Thermo switch. (wires were frayed, but it's just an on/off switch.)
TPS
A stuck or sticking throttle valve. (no, cleaned and looked ok).

wondering if my winky blinky was not setup right. Gray connector and blue wire to motor.
The black couplers are joined. wondering if they should be disconnected?

[TownsendsFJR1300]

I'd swap out that thermo-switch just to rule that out.

If it continues to think the engine is cold, perhaps(guessing now) it's holding the idle high(same RPMs) just like the other motor when COLD..

*My Winky Blinky" (my F150) is the V1.33 version and has ONLY 3 wires to the plug that plugs into the engine, nothing else. It is made by BRP Diagnostic's...

[pstephens46]

Motors are on a friends boat. I have maintained all fuel filters, vst, plugs, etc. I have exp with OX66 motors.
Def a switch or sensor problem keeping stbd motor at 1200 rpm. Was working fine last season.

Thinking problem is related to:
A stuck or open t-stat. (no)
ISC valve.(no, is clicking when turning off and also swapped with port motor to test)
Thermo switch. (wires were frayed, but it's just an on/off switch.)
TPS
A stuck or sticking throttle valve. (no, cleaned and looked ok).

wondering if my winky blinky was not setup right. Gray connector and blue wire to motor.
The black couplers are joined. wondering if they should be disconnected?

Winky Blinky is not what is needed. Get a copy of YDIS and a laptop and it will provide a starting point. I guess you could test each and every sensor looking for proper values, etc.

Edit....apparently the correct one will work properly....

[pstephens46]

Motors are on a friends boat. I have maintained all fuel filters, vst, plugs, etc. I have exp with OX66 motors.
Def a switch or sensor problem keeping stbd motor at 1200 rpm. Was working fine last season.

Thinking problem is related to:
A stuck or open t-stat. (no)
ISC valve.(no, is clicking when turning off and also swapped with port motor to test)
Thermo switch. (wires were frayed, but it's just an on/off switch.)
TPS
A stuck or sticking throttle valve. (no, cleaned and looked ok).

wondering if my winky blinky was not setup right. Gray connector and blue wire to motor.
The black couplers are joined. wondering if they should be disconnected?

Looking over the SM a little more.

It also appears the thermo switch is part of the list of items that could place the motor in fail safe mode (high rpm).

Learned something new today.... Can you try swapping the thermostat covers (includes the switch of course)?

[cousinabe]

Thanks.
The boat is 45min away from me. When I tested using my wb 90890-06865, the black (male/female) connectors were joined. Wondering of they should have been disconnected.

SIM has these part numbers as superseded.
90890-06865 & YB-06795. I have an email into him as well.

[pstephens46]

Where are you located? You might find someone to loan or assist with YDIS? Or your buddy might consider buying it for $100.00.

[cousinabe]

Just bought off ebay.

[pstephens46]

Come back when you receive it and Fairdeal will help you select the correct port setting....

[rodbolt17]

hahahahahaah
the amount of mis-information is stupidly high on this thread.
just like the OX66 the ECU is seeing a value out of range and is trying to alert the operator of a malfunction.
the ECU DOES NOT monitor thermoswitch's.
the ECU does not and cannot monitor the ISC valve.
leave the IAT unplugged after maint and it will idle about 1100 RPM.
but it is the same basic stupidly simple speed density system as the OX66.

[cousinabe]

Thanks Rodbolt. Any thoughts on the winky blinky? Should the black connectors be joined or not? Should this wb work on this motor?

[rodbolt17]

dunno. as I have the correct tools I have never tried the winky on an F motor.
the correct winky plugs into the gray 3 prong diagnostic connector and the capped blue female connector.
the older version simply wont work with an F motor.

[pstephens46]

hahahahahaah
the amount of mis-information is stupidly high on this thread.
just like the OX66 the ECU is seeing a value out of range and is trying to alert the operator of a malfunction.
the ECU DOES NOT monitor thermoswitch's.
the ECU does not and cannot monitor the ISC valve.
leave the IAT unplugged after maint and it will idle about 1100 RPM.
but it is the same basic stupidly simple speed density system as the OX66.

Please tell us about fail safe mode in relation to the thermoswitch as shown in the above attachment.