That sounds about right for a IAC failure.
Yeah, try replacing the IAC, also check the wiring from the IAC as well.

 

Parts stores are closed tonight but I'm gonna give them a yell in the morning.

I got bored and dusted off my voltage meter. The 4-pronged connector for the IAC doesn't appear to have any voltage when the key is turned on. I checked for continuity and it gives a reading but nothing happens when I check the voltage.

 

There should be two wires that are getting 12 volts on there. Reset the pcm (disconnect the battery for a few minutes), and with the IAC motor where you can see it, turn the key to On, and see if the pintle extends. It's possible it will push it right out..... It's better if you can check it while installed, but, that requires a second warm body to turn the key. (less likely to trash the IAC.)

There are service manuals available for download in the FAQ section. Might wanna grab one appropriate for your truck.

 

First things first... p1282 is not "Accelerator Pedal Pos Sens2 Low Voltage". p1282 is Fuel Pump Relay Control Circuit. This explains why it is not starting with the new computer (You have no fuel pressure).

As mentioned earlier in the thread, simply holding the gas pedal down will get around a faulty IAC motor to get the truck started... just may not idle that well haha.

Also p0601 is the internal fault code (I had it), so it will not be able to sense other codes. It is possible you really had other codes, but it wasn't attempting to detect them.

I've posted here before about my experience with autocomputerexchange.com, and it certainly was not a good one. There is no customer service... if/when you call them back, ask for a manager for fun. you'll get passed around, or the same person will pick back up and say there are none available. I said i'd hold lol, and they put me on hold for a few minutes. Same lady picks up and ask me what my problem is. I asked is she the manager and again... you never actually get one. "Why do you need a manager?" My first pcm from them was DOA, my second one gave the same p0601 code I had to start with. The holiday weekend was coming up, so I paid more to have the second one overnighted, and it did not arrive the next business day. It wasn't until I opened a case with ebay did I actually got a response from "the boss". I did get my refund, but I did not get the extra $ for the overnight service I never received. I should have challenged it, but I chalked it up as a learning experience. Check kbb.com for auto computer exchange too btw, it is interesting. Price point attracted me to them, but just remember... you get what you pay for.

All in all, you probably got a bad pcm as much as I would hate to say it. If it primes with the old comp (possibly that sound you heard), try holding the pedal down to see if the truck will start (to rule out IAC).

 

Thanks for the response!

The only consistent codes I get now are the 0505 with the new PCM and 0601 with the old PCM. The IAC doesn't work at all with the new PCM. I understand now that shouldn't cause the engine to not start; it just won't stay idle without giving gas.

This morning I put my old PCM back in (again) and it started up like nothing was ever wrong. I'm sure it will still occasionally not start on me like it has been doing for the past few months but at least I can drive to work and drive home.

I'll be sending this new PCM back today. Do you think I should just ask for a refund and try another vendor or see if they send me a good one next time? Also, where did you end up getting your replacement?

 

If it runs on the old pcm as if nothing were wrong, something is obviously not correct with the new pcm. You would know if you had an IAC problem with the old pcm. I received 2 bad computers from them, and then got my refund. It is your call on what you want to do. I went local, but you can order from a reliable vendor too online. Mine was reman from "cardone" who re-manufactures a lot of stuff. It wasn't the first time i had heard the name before I ordered it. Try your local stores such as autozone etc. Rockauto also carry's remans from cardone. What are the numbers on your old pcm?

 

I called ACE yesterday. The guy sounded reasonable and said he'd send me another right away. Later in the day, I got a 2nd Day air confirmation from UPS. We'll see if this one actually works. If not, I'm going to fight for a refund. From what I can tell by reading reviews of ACE, it's not easy getting a refund from them.

Thanks for the heads up on some other options. My number on the old PCM is 56028550AB. I found one on the rockauto site but it's near $400. That's still half the price of the dealer and rockauto actually has a BBB rating so I might give them a shot if the next PCM doesn't work.

Thanks again!

 

Sounds like a good plan. For some reason yours is more expensive than my 01 was. Mine was mid 2's I believe. Summit Racing also sells the pcm for the same price/core. I have never had a bad experience with summit, so if it was between summit and rockauto, I know who my top choice would be. Customer Service is top notch!

http://www.summitracing.com/parts/AAZ-79-8550V/

Good luck!

 

UPDATE!

I'm furious with these people. After the second computer did not work, I called them and the guy was very nice and asked me to return the 2 bad computers with a note stating that I wanted a refund. I sent the 2 back and waited for a fund/call/email/something.

I didn't hear anything back from them so I called today. I talked to one guy who told me I could only get an in-store credit but I could not get a cash refund. So I asked to speak to someone to dispute the matter. He puts me on hold and a "different" guy answers the phone (it's really the same guy trying to use a different accent; later in the conversation he turned back to his old accent...). After speaking with this guy, he informs me that the reason I can't get the cash refund is because my truck "blew up" the computers they sent (keep in mind my original computer still works; it just has the 0601 code). So finally I give in and I ask how can I use the in-store credit to get a 3rd computer to see if it will work. He then tells me, "oh wait, I see that you cannot get in-store credit now". So then I ask him to return the computer that I bought since I'm paying for it anyways but he says he can't.

In the middle of all this he tells me that I'm scamming him by burning up his computers and I should be thankful that they aren't charging me a core fee since I didn't return my original computer with the new ones that didn't work....

What a load of crap!

 

You should have filed a complaint with your states Attorney General's office of consumer protection. Some states word this differently. You might be surprised as to how fast they refund your money!