tattedlariat

So i was driving today, threw these 2 codes. Car wont idle with a/c on. Leads me to believe its the IAC. Well, the P1509. Pulled it off to clean it, and ended up stripping the screws. Whoops. I'll be getting a new one tomorrow or the next day hopefully.


BUT! The p1298 is the one that scares me. Guy at autozone says its probably a bad ECU, but after some research it shows that the ELD could be bad.

Should i replace the ELD first, and is it possible to just replace the ELD? Because i can't find one online, i'm not sure where to go from here.

tattedlariat

And does the standard transmission have an ELD?


I'm so lost lol

ezone

First I'd erase the code and see if it returns.

Then get the service manual and follow the troubleshooting info for this code.

Kinda odd to see the code on a 6th gen car. 7th gen had a ton of bad ones.
No, none of the transmissions have ELD.

The ELD is in the underhood fuse box.

If this has the IAC bolted to the back of the intake manifold, the screen gets clogged with carbon buildup and causes low idle speed.

Except you have the code below....

That's supposed to be a circuit code (electrical). I'd ohm test the valve first, then do wiring checks as per the service manual.

tattedlariat

Well, I cleaned the IAC. Not much better. Long as i don't run the a/c i don't have many issues.

However, occasionally, i'll be driving down the road and it'll die. Starts up after a key turn or two.


Think it may be the IAC or? I'm lost.. And not ready to throw it in the shop quite yet.

Stock 99

Just a couple thoughts.

Maybe try taking the AC (loosen) belt off and see if the compressor pulley spins freely.

I did some reading on ELD when you first posted...I have no first hand experience but seems if you need to replace it you'll have to replace the entire fuse box. Some car stereo guys messed with ELD because it was throttling alternator amps for the car. Did it have a big system in it that you're aware of? Fuse 15 was also mentioned...I'd have to look again as to why but it doesn't take much time to check a fuse.

My last though would be main fuel relay after checking the above. Do some reading on that one ...common issue for 6th gens. Pretty much a free fix if you have any solder skill at all.

HTH

ezone

Still have the IAC circuit code?
Take inventory of what quits and what is still working.
Does the dash go dead (gauges and warning lights all dead) as though someone turned the key off?

Does the tach drop to zero yet all other gauges keep working?