Intermittent Code 41

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Aug 22, 2015 | 04:31 PM

Jetmechkc135r

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Intermittent Code 41

Hello Folks,

I'm looking for some guidance before I change my injectors. A little about my rig:

93 F-350 XLT 7.5L
crew cab truck
188,000 miles

trouble I'm having is with an Intermittent Code 41 (Lean) only visible during the engine running test and does not store, and I have not noticeable issues with it running

I have changed the follow:

PCV valve
EGR valve
Oxygen sensors

Doe any one have any guidance for me?

Aug 22, 2015 | 04:58 PM

rla2005

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From: Kentucky

You only have one oxygen sensor so I assume the above is a typo. Check your fuel pressure with the engine running at idle.

Aug 22, 2015 | 05:22 PM

Jetmechkc135r

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Yea Sorry just one O2 sensor

Just got back from getting a new pressure gauge and it was 19 not running and 34 running and produced about 3oz in 30 seconds thru the bleeder port.

I did fail to mention it has new plugs, wires cap, and rotor.

What sound does a leaking injector make?

Aug 22, 2015 | 06:15 PM

timbersteel

Logistics Pro

Joined: Mar 2005

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From: Mexico, Missouri

Vacuum leak.

Still have the original, brittle nylon vacuum lines? If so, start checking them.

Aug 22, 2015 | 06:17 PM

rla2005

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From: Kentucky

Quote:

Originally Posted by timbersteel

Vacuum leak.

Still have the original, brittle nylon vacuum lines? If so, start checking them.

I would lean more towards an exhaust leak.

Aug 22, 2015 | 06:49 PM

Jetmechkc135r

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I did have them but I replaced most of them. I guess I may need to see if I missed one. I can also look for exhaust leaks . I feel, hear or sense no issues with drive ability that is why I was thinking a week injector. More to follow

Thanks Guys