cde 44

[BigrobDog]

1990 suburban engine , 1991 1500 tbi harness.in 72 truck , i think the 91 harness has two o2 plugs. does my suburban have 2. one on each pipe, what would cause the 44 code. and how to fix.

[WIDESIDE72]

Wrong forum, imo
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[BigrobDog]

Originally Posted by WIDESIDE72

Wrong forum, imo
Posted via Mobile Device

why is that

[Lattimer]

Originally Posted by BigrobDog

why is that

Probably get more responses on the engine forum or on the 90's trucks forum.

[WIDESIDE72]

Originally Posted by Lattimer

Probably get more responses on the engine forum or on the 90's trucks forum.

X2
Posted via Mobile Device

[BigrobDog]

Originally Posted by WIDESIDE72

X2
Posted via Mobile Device

your on the wrong forum

[SS Tim]

Most of your questons and even double posts lately seem to be engine and drivetrain or pure electrical swap related.
From what I have read it does not seem like you have a factory service manual for the donor engine and electrics. A factory manual and a wire harness guide would be my first step in doing an update, not last, trying to solve "where does this go?".

[BigrobDog]

Originally Posted by SS Tim

Most of your questons and even double posts lately seem to be engine and drivetrain or pure electrical swap related.
From what I have read it does not seem like you have a factory service manual for the donor engine and electrics. A factory manual and a wire harness guide would be my first step in doing an update, not last, trying to solve "where does this go?".

i bought one for each truck , from orielly auto .but bouth were black and white and poor quality and no info , I have posted on more then one forum also electrical and sub 90 forum . thinking that i may have a better chance on the subject that nobody knows about or I am unable to find.you must be super bored cruising the forum looking for post that dont belong. But i thank u for all your help with that code 44.

people are on this site because of limited resource ,if I had all the right answers I wouldent be asking for help would I.

[SS Tim]

Originally Posted by BigrobDog

i bought one for each truck , from orielly auto .but bouth were black and white and poor quality and no info ,...

Please note I said "factory". Really doubt that you found those at O'Riellys. They will have complete wiring diagrams and diagnostic tables to help with code and wiring issues on stock vehicles (as a note my 99 Camaro set totals almost a foot thick). To sucessfully itegrate a late harness and controls into an earlier vehicle you need to have a good understanding of both vehicles and their systems.

In all fairness I was trying to answer your question "why is that" earlier. Having seen your posts/questions go unanswered and seemingly out of place I though it deserved an answer.

As far as DTC 44: Oxygen Sensor (HO2S) Circuit (Lean Exhaust Indicated) There can be many causes on a stock installation. You questions seem to idicate you are not sure what a stock installation even is, hence the recommendation to buy some documentation. As to what the stock installation is and the differences between a 90 and a 91 Chevy truck I don't know and can't help you. However a consumer Mitchell DIY subscription for a 92 C1500 will give you a great deal of information to help you sort through this.

But remember if the ECM is expecting a O2s signal that is out of limits or not there you are going to get code. In order for the system to run correctly it will need to see a feedback signal from the O2 sensor/s to correct the PWM of the injector for a given engine speed, load, temp and altitude.

[SS Tim]

This link should help you out.
http://67-72chevytrucks.com/vboard/s...d.php?t=545416

[BigrobDog]

Originally Posted by SS Tim

This link should help you out.
http://67-72chevytrucks.com/vboard/s...d.php?t=545416

thanks tim but when i click on link it says it cant be found .

[SS Tim]

Sorry something is wrong with the first link here try this.
http://67-72chevytrucks.com/vboard/s...d.php?t=545416