Trouble codes 44 and 94

[andymac0035]

KOER codes: (copy+paste from the sticky)

44) Secondary air injection system inoperative - right side (R)

94) Secondary air injection system inoperative (left side) (R)

1991 CV with stock 5.0 LOPO 90k miles

Is this because my A/C belt is off?

[marquisman]

probably lol but who cares about stupid emissions crap lol

[andymac0035]

probably lol but who cares about stupid emissions crap lol

Not me that's for sure.....but I thought it was said that these cars didn't give a crap about the air pump not being hooked up?

[gadget73]

yeah, its because the smog pump isn't turning. It sets codes, but it doesn't actually do anything else.

[pantera77]

Not me that's for sure.....but I thought it was said that these cars didn't give a crap about the air pump not being hooked up?

Those shouldn't cause a check engine light though. At least I didn't think so. My car had no problem with no smog pump.

[andymac0035]

Well this all does kinda' make sence to me.
If I let the car warm up it either doesn't flash the check engine much (or at all).
And that's what the pump if for right? (to warm the cats up)

There were a few times it flashed when the pump was hooked up....
but those were VERY cold days and the car wasn't fully warmed up.

[1990LTD]

there's nothing downstream of the cats to set of the check engine light, the 02 sensor is in the manifold IIRC

[andymac0035]

Smog pump heats heats things up upstream to if I remember right though.
Probably what is setting the light off (I think).

[gadget73]

it shuts off the air to the back of the heads within a few minutes of startup. It does help warm the O2 sensors a little bit quicker, but honestly if they aren't warmed up by the time the computer switches to them with their internal heater, they're probably shot anyway.

[andymac0035]

So my o2 sensors are suspect then?

I'm having no drivability issue's.
If not for the blinking light I'd have no indication that the computer wasn't happy.

[gadget73]

If its not causing you problems and your fuel mileage hasn't gone to shit, don't worry about it. If you happen to be replacing the exhaust and have an excuse to put new sensors in, do it but otherwise if its not broke, don't fix it.

[87gtVIC]

So bad o2 sensors can cause shitty mileage? Would bad o2's come up on a test? I really think something is wrong lately because the tank seems to empty strangely fast.

[gadget73]

yeah they can cause bad mileage. Last one I replaced didn't set any codes, but the fuel mileage was just horrible. Replaced it, and the gas guzzling went away. It was replaced mostly out of desperation, nothing else made sense and/or checked out OK.

[86GmLsCoupe]

44 and 94 are there because the belt is off like you were saying since the belt does the a/c and smog pump together. The codes are fine to have and have no negative impact on the car. My car has them since I have the pump off and run the smaller belt to run just the a/c alone. The only other thing is I think you won't get code 11 (system pass) since other codes are present. Someone please correct me if I'm wrong on that though. Bad o2 sensors will hurt you mpg numbers and I think should be replaced every 50k?

[sly]

I had to replace the O2 sensors on my 88 (they were caked with carbon build up) at around 110K... the 93 vic still has the original sensors on it and it's pushing 200K.