Pulled the truck into the garage to replace some lights. When I tried to start it the WTS light was flashing and the truck would only crank and not fire. I tried pulling codes and got nothing. I disconnected the batteries for a few minutes and nothing changed. I unplugged the Quadzilla and the WTS light functioned as normal. The truck started right up but instantly idled at 1200rpm and then went into 3cyl idle mode. I checked my idle control switch and it’s in the off position. My throttle is also unresponsive(Timbo). Thanks to my low stall converter I was able to get the truck out of the garage and back into its parking spot. When I parked it the idle dropped to 900rpm and still no response from pedal. I assume I need to do an apps reset due to disconnecting the batteries. Could the quad really be the cause of all this? I plan on doing the reset tomorrow and completely unplug the quad just to see if it runs stock.

Don't have any answers, just waiting to see what the APPS reset offers.

It will be interesting to see if the Quadzilla is the culprit.

• John

I went out and completely disconnected the Quad, and did the apps reset. Truck is back to flashing WTS light even with no Quad and still does the crank no fire. I feel as though I’m looking at an ECM rebuild? I did check the little bit of live data I get with my scanner and it showed TPS at 93% while not running obviously.

Edited June 1Jun 1 by Sycostang67

I have not experienced your situation, but from what I have read from related past postings on this site, you are in need of a rebuilt ECM. The ECM basically will not boot up, or won't finish booting up, so no engine start.

• John

Edited June 1Jun 1 by Tractorman

The ECM is the computer bolted to the driver side of the block, correct?

YES, go to the Vendor Directory here on the site and find Auto Computer Specialist. They have a good reputation with good results.

Ok, I found the ACS website and should get the ecm pulled today and hopefully in the mail tomorrow.

Pulled the computer and realized I forgot to get the mileage from the dash. Would it be safe to hook the batteries back up and to get the mileage without the computer installed?

Yes. The cluster will work without the PCM or ECM.

Still sitting on my thumbs with the truck. Not totally impressed with ACS, they’ve had my ecm at a work station for 2 weeks with no updates. I finally shot them an email today and was told it should ship out today. I’m going to assume that since I didn’t get an email with a tracking number that it wasn’t shipped. Even if it ships Monday, with the holiday next week I doubt I’ll see it for another week or two. Quadzilla has my tuner, or at least I assume they do. I shipped that to them a week and a half ago and haven’t heard anything from them. I sent them an email 2 days ago and haven’t gotten a response. My truck has been sitting for about a month now and I really have some stuff to do that I can’t do with a mustang.