legacycentral bbs

hehe that sounds like a new reality show. Well my ECU still spitting out codes for the injectors, ALL 4!!!!! whyyyyyy whats wrong with it, i cleaned the injectors and every single connector in the engine bay, a whole weekend worth of work, and nothing still fu....g giving me codes. What'd you guys think? give me some opnionsp please. That not counting that i have reset the ecu countless times.

thanks in advance

here is the list of errors
14
15
16
17 all injectors what can possibly be wrong with all 4 injectors?
22 Knock sensor

23 Air flow sensor
31 Throttle sensor
42 Idle switch
45 Atmospheric pressure
sensor

All I know is that the last four are interrelated. If one of the sensors is screwy, the ecu doesn't knw which one is causing the problem so it'll throw codes for all four. I've never heard of anyone throwing a code for all four injectors at the same time, tho.

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So where would I find these Everythiing else i know where is

23 Air flow sensor (is this the one by the air box?)

42 Idle switch

45 Atmospheric pressure
sensor

nsantos23 wrote:So where would I find these Everythiing else i know where is

23 Air flow sensor (is this the one by the air box?)

42 Idle switch

45 Atmospheric pressure
sensor

Airflow sensor (silver metal thingie attached to airbox)
Idle switch (integrated into the throttle position sensor - that black sensor attached to the throttle body)
Atmo Pressure sensor (on the passenger side strut tower. It's a black rectangular sensor with a vaccum hose attached to it)

The idle switch can be checked as per a couple posts on this site. Do a search for idle switch and you'll find the procedure.

I can't remember the values for the MAP, but you'll be testing voltage from the sensor with the engine in the "on" position (0.00vaccum) and at idle. vrg3 knows the values.

Dunno how to check the MAF, tho.

Thanks bro, i'm gonna take a look at these, take'em apart and clean possibky change. I have a extra TPS so i'll just change it and clean the whole throtle body. as far as the injectors i may just go ahead and buy new ones.

thanks again

No problem.

Wait, are we talking about a turbo model or a non-turbo model?

If it's a turbo, code 45 is actually for the pressure sensor (which measures both atmospheric and manifold pressure) and the pressure exchange solenoid. Everything boostjunkie said is correct.

If it's a non-turbo, though, the airflow sensor has a black plastic housing and the atmospheric pressure sensor is built into the ECU.

its the 94 turbo

Ah, ok.

How did you reset the ECU?

vrg3 wrote:If it's a non-turbo, though, the airflow sensor has a black plastic housing

assuming the car is a 90-91 auto or 92-94 right?

Yeah, you're right, THAWA. My mistake.

Its a 94 SS Auto Sedan, and i did reset the ecu by connecting the plugs and drivin' till it blinked (several times), i even left the negatice battery out for 1 hour.

You connected both pairs of plugs and after a little driving the light started blinking steadily (i.e. it wasn't flashing out codes)? That's supposed to mean the ECU determined that all the faults were gone!

That's weird.

Does the engine run correctly?

The engine runs fine, other than when the engine light comes on i feel some hesitation and then when the light goes off the hesitation is gone, i got a new purge solenoid valve, new pcv valve, cleaned everything in the engine except for the throatle body.

I have no idea why its doing this, and the hesitation is annoying, usually i can beat a accord V6 off the line when my cel is off... but when its on it feels like i have an extra 800lbs in the car.

And all nine of those codes come back every time you do the read memory procedure?

I wonder if there's a power supply or grounding problem.

Yes all the codes are exactly the same everytime, nopw i have cleaned all ground and put in a new alternator to see if it would work. I guess it didnt.

I also changed spark plugs the ones i had were really bad, so i went and got Bosh one, i know those are not good, but the car runs better with them.

any reply will be helpfull, a special thanks to everyone

Neo

why not just get ngks? not trying to be rude but if you know the bosch aren't good why buy them?

I didnt know bosh's were bad till i started reading the postings, by then i had installed the plugs already, in which i'm getting rid of them this coming weekend.

ah, makes sense

Boschs shouldn't be causing these codes. I used them and while they weren't that great and didn't last very long compared to NGks or others, all they did was cause a little stumbling when they started to go - nothing to explain his problems. Of course, it won't hurt to replace them anyway.

Steve

Ok,
I just came in from your knock sensor thread. Those last four codes were being thrown by my Legacy when I was running without an O2 sensor. I didn't find this out until the day I went to sell the car. But I don't see how this could be related to the injector issues. Seems like you have multiple things going on here...

Maybe my O2 sensor is bad?

Let me replace it and see what happens

thanks

neo

Sorry to "revive" this post so late... but just out of curiosity, did all of the codes go away after you've replaced the O2 sensor?

If not, then what was the remedy?