Oil Temp = 32F

[RaceCarRich]

Forgive lack of search as I’m out on the water.

2005 5.0L MPI

Getting check engine alert. Below about 750 rpm stalls. Going to Neutral stalls. If I feel it stalling, I can hit throttle and save it. Runs fine other than that. All vitals seem fine but oil temp reads 32 degree F on little tach screen. It’s like 75-80 degrees out.

Is it oil temp sender?

where is sender? Any pics/diagrams? Tips?

if not sender, any thoughts?

 

[alldodge]

oil temp reads 32 degree F

If your looking at smartcraft then the gauge is not present.

As far as you issue, I will need more info, but initial I'm thinking the IAC needs cleaned if not replaced

 

[RaceCarRich]

Yes Smartcraft. So it always reads 32F and has no sender? Would dirty IAC cause check engine warning? Seemed to happen all of a sudden. Light and stall at neutral.

 

[alldodge]

Would dirty IAC cause check engine warning? .

Yes, the dead give away of IAC is you can keep it running above idle, but soon as it goes to idle it dies

 

[RaceCarRich]

I would love to think it’s that easy. I’m guessing a can of MAF cleaner, remove arrestor, find throttle body, spray **** out of blades and into IAC holes?

 

[alldodge]

I would suggest, removing the IAC, clean it gently, then reinstall

 

[RaceCarRich]

Okay

What holds it on? T15? Security Torx? Any guesses?

Hoping to non-idle into my tight slip and show up w tools to clean first thing in am.

Thanks!!

 

[alldodge]

Unable to verify without a serial number, but should be just phillips head screws. I'm seeing 1/4x20 is the size and its mounted behind the TB on the manifold

http://www.mercruiserparts.com/bam/subassembly/31848/7585/80

 

[RaceCarRich]

Fixed!!! Thanks!!! As a reference, 3/16” Allen socket.

Cleaning didn’t work. Had to replace. Used
a $45 auto part for ‘02 Ford Windstar instead of $178 from marine dealer. Hopefully both are spark proof
as I assume.

Thanks again.

 

[Fun Times]

a$45 auto part for ‘02 Ford Windstar instead of $178 from marine dealer. Hopefully both are spark proof
as I assume.

You're good/safe to go with the auto IAC.

A 32 degree reading is normally just a default setting range a scanner system see when a sensor isn't connected. Your engine doesn't offer a oil temp sensor from new nor I don't believe there is one to buy and install that connects to the stock MPI/ECM component features.........Easily anyways!!

Glad you were able to get it running normal once again.

 

[RaceCarRich]

It was only my 3rd or 4th trip with this boat or any boat with Smartcraft gauge so I guess I never noticed the 32F reading before. Normally I would have thought of IAC but I assumed the 32 degree reading was definitely the smoking gun. This IAC was clean as new but simply failed. Working one minute, dead the next with a Check Engine alarm.

Glad and you guys were here to point me in the correct direction.

 

[achris]

... This IAC was clean as new but simply failed. Working one minute, dead the next with a Check Engine alarm......

That's the standard mode of failure for most electrical/electronic components... They either work, or they don't. (and yes, I have used the $45 IAC from a car shop too... it's the SAME part, without the 'marine tax')....

Chris.......