LT1 PCM problem
LT1 PCM problem Just got my motor together and got a tune from PCM for less, its sat. at 7 oclock and i cant call any one and im trying to get this thing to run right. I am getting a "Interp: cksum err" has anyone heard of this? What could be wrong. Before i did not get that error. I did relocate the computer. Maybe something is not tight?
FormerVendor
Joined: Apr 2007
Posts: 165
Likes: 0
From: Seattle, WA
Hard to say, since I didn't write PCMCOMM. Each packet transmitted from the PCM contains a checksum, and maybe PCMCOMM is detecting checksum errors. It could be a bad ground or a wiring issue between the diagnostic connector and the PCM. Or it might be a problem with your data cable. Sorry, I wish I could provide better details.
And also it says Comm Err: -10 something to that effect.. when i connect to the computer it doesnt say that but when i turn the key to on, it comes up with errors.. then when i open the throttle blades sometimes it throws an error. i verified all the plugs were giving the correct voltage all sensors are reading correctly.. the only thing i can think of is the computer got fudged up sitting in my tool box? I even went as far as reflashing the old tune and it did the same thing... im lost now and its VERY AGGRIVATING..
FormerVendor
Joined: Apr 2007
Posts: 165
Likes: 0
From: Seattle, WA
I do have a cable tester app that might help us track this down. If you want to try it, send me email at vince@trifectaperformance.com, and I'll send you a link and instructions.
