Superchip gone bad?
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Joined: Sep 2009
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From: Athens, TN
Superchip gone bad?
How likely is it that my Superchip went bad? I have a 99 Expedition, 4.6, 225,000 miles with an old-skool Superchip 1100.
For the past few weeks, my mileage has gone way down (from just over 15 to just under 13). Yesterday, while driving, I noticed a low-speed miss that seemed to clear up with more driving.
Today, I was heading to the moves when it started missing terribly. No power at all, wouldn't keep idling. While it was running, the tack dropped to zero for a couple seconds, then came back up. About 30 seconds later, the speedometer did the same thing. The CEL came on briefly, but didn't store a code. After the movie, it started up and ran fine until I got it back home.
I removed the Superchip, and life seems to be better. I ran some errands and didn't notice any further problems. Has anyone else's chip gone bad? Is this maybe a bad connection between the chip and computer that can be fixed?
For the past few weeks, my mileage has gone way down (from just over 15 to just under 13). Yesterday, while driving, I noticed a low-speed miss that seemed to clear up with more driving.
Today, I was heading to the moves when it started missing terribly. No power at all, wouldn't keep idling. While it was running, the tack dropped to zero for a couple seconds, then came back up. About 30 seconds later, the speedometer did the same thing. The CEL came on briefly, but didn't store a code. After the movie, it started up and ran fine until I got it back home.
I removed the Superchip, and life seems to be better. I ran some errands and didn't notice any further problems. Has anyone else's chip gone bad? Is this maybe a bad connection between the chip and computer that can be fixed?
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Joined: Feb 2004
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^^ X2.
OP - it is possible that a connection problemm exists.
Here's an old post on how to clean it:
==> https://www.f150online.com/forums/1745104-post10.html
Less likely is a corrupted 'burn' (or internal failure of the device) - but still possible as well. If that's the case, you have no recourse but to send it to Superchips for R&R (on yer dime I'd imagine, after warranty expiration).
And that would liklely mean it would make more economic sense to just purchase a current-tech flash programmer.
MGD
OP - it is possible that a connection problemm exists.
Here's an old post on how to clean it:
==> https://www.f150online.com/forums/1745104-post10.html
Less likely is a corrupted 'burn' (or internal failure of the device) - but still possible as well. If that's the case, you have no recourse but to send it to Superchips for R&R (on yer dime I'd imagine, after warranty expiration).
And that would liklely mean it would make more economic sense to just purchase a current-tech flash programmer.
MGD
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Member
Joined: Sep 2009
Posts: 84
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From: Athens, TN
New plugs (motorcraft)
New plug wires
cleaned TB
Cleaned MAF sensor
Cleaned EGR ports
New DFPE sensor
New air filter (1 month ago)
I haven't changed O2 or fuel filter, but I don't see how those would cause an intermittent stalling with no codes. It's due for an oil change, so I'll probably have the fuel filter changed at the same time.
MGD-
Thanks for the post. We just got our first taste of cold weather here, and I guess its possible that the change in temperature caused a flakey connection. I bought the truck with the chip in it, with no documentation about who installed it or when the chip was installed. I only discovered it when I was chasing down a leak in the rear window washer line. It's probably worth taking it all apart, cleaning the contacts and reseating the chip.
I think I'll leave it out for a couple weeks anyway, to narrow down whether it's the chip or something else. It'll be nice to buy regular gas anyway.
I'm going to