need help chip install gone wrong
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Senior User
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need help chip install gone wrong
Hello,
I recently purchased a early 99 f350 that had a chip that wasn't installed. the chip was hanging under the fuse panel. I think the dealers unhooked it when they were selling it. It is a diesel innovations chip. I popped the cover off of the pcm and installed the chip. Disconnecting the negitives on both batteries before, reconnecting them after. Now the truck will not start.
I disconnected the batteries took the chip out reconnected and the truck still won't start.
The wait to start light will not come on anymore.
What can I do just to get the truck up and going without the chip. I've learned my leason and will take it to a shop to have them install the chip. I really would just like to be able to start the truck and drive it to the shop
Bubba
I recently purchased a early 99 f350 that had a chip that wasn't installed. the chip was hanging under the fuse panel. I think the dealers unhooked it when they were selling it. It is a diesel innovations chip. I popped the cover off of the pcm and installed the chip. Disconnecting the negitives on both batteries before, reconnecting them after. Now the truck will not start.
I disconnected the batteries took the chip out reconnected and the truck still won't start.
The wait to start light will not come on anymore.
What can I do just to get the truck up and going without the chip. I've learned my leason and will take it to a shop to have them install the chip. I really would just like to be able to start the truck and drive it to the shop
Bubba
Posting Guru
Joined: Oct 2007
Posts: 2,225
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From: Farmington, Minnesota
Check your #30 fuse under the dash, if its blown unplug your fuel bowl heater element (plugged into the back of the fuel bowl, it has shorted and will continue to blow fuses. Reinstall new fuse.
Post Fiend
Joined: Feb 2006
Posts: 11,892
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From: Middle Tennessee
I hope you didn't have the key in the ignition at any point. If you did, the chip and PCM may be toast. I know you disconnected the batteries, 2 right? At any rate, disconnect both batteries again and pull the chip. Let it sit then try again. Hopefully you did not bend a PCM pin. How do you figure it's a DI chip?
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Senior User
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Thanks for the reply
I checked fuse 30 and its fine. I waited a while with the key on and then started but it just wont turn over it'll crank and that's it
The key was in my pocket the whole time. In fact in the install sheet for di this is what they tell you to do with the keys so I followed suit.
The chip has the website address at the bottom of it so that is how I knew where to look for the install
Should I fully discconnect them + and - and how long should I have them off before reconnecting everything?
I checked fuse 30 and its fine. I waited a while with the key on and then started but it just wont turn over it'll crank and that's it
The key was in my pocket the whole time. In fact in the install sheet for di this is what they tell you to do with the keys so I followed suit.
The chip has the website address at the bottom of it so that is how I knew where to look for the install
Should I fully discconnect them + and - and how long should I have them off before reconnecting everything?
Posting Guru
Joined: Oct 2007
Posts: 2,225
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From: Farmington, Minnesota
Check the plug to the PCM on the firewall to make sure it's seated and the bolt is tight.
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Senior User
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Would there be a problem if the screw was not tight.
I orginally tried to unscrew from the firewall and remove the connection that way to completely remove the pcm. It is sooo hard to get any tool down there to loosen the screw that I eventually gave up and realized that I can just pop the cover and install the chip that way. I figured the connection would be good being that the truck had the chip previously.
Also on the pcm. since it is an early 99 is it a xle4? are all early 99s the same pcm?
There is one on ebay with an update that I will get if so.
I orginally tried to unscrew from the firewall and remove the connection that way to completely remove the pcm. It is sooo hard to get any tool down there to loosen the screw that I eventually gave up and realized that I can just pop the cover and install the chip that way. I figured the connection would be good being that the truck had the chip previously.
Also on the pcm. since it is an early 99 is it a xle4? are all early 99s the same pcm?
There is one on ebay with an update that I will get if so.
Postmaster
Joined: Dec 2005
Posts: 3,405
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D/C the fuel heater in the fuel bowl, it worth a shot to try it before buying a PCM. You also might want to try scanning for codes before ponying up for a PCM.
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Not a liberal...
Joined: Jul 2006
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From: Cut & Shoot, Texas
Wondering if the chip was installed correctly the first time, before you bought the truck? Are the printed circuit board connnections whistle clean?
Just throwing out an idea.
Just throwing out an idea.
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Post Fiend
Joined: Feb 2006
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From: Middle Tennessee
Shouldn't matter Scott. The stock PCM should work without the chip in any situation.
Posting Guru
Joined: Oct 2007
Posts: 2,225
Likes: 1
From: Farmington, Minnesota
Would there be a problem if the screw was not tight.
I orginally tried to unscrew from the firewall and remove the connection that way to completely remove the pcm. It is sooo hard to get any tool down there to loosen the screw that I eventually gave up and realized that I can just pop the cover and install the chip that way. I figured the connection would be good being that the truck had the chip previously.
Also on the pcm. since it is an early 99 is it a xle4? are all early 99s the same pcm?
There is one on ebay with an update that I will get if so.
I orginally tried to unscrew from the firewall and remove the connection that way to completely remove the pcm. It is sooo hard to get any tool down there to loosen the screw that I eventually gave up and realized that I can just pop the cover and install the chip that way. I figured the connection would be good being that the truck had the chip previously.
Also on the pcm. since it is an early 99 is it a xle4? are all early 99s the same pcm?
There is one on ebay with an update that I will get if so.
Thread Starter
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Senior User
Joined: Mar 2007
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So i think xle is for all early 99's.
And yeah I just popped the black cove off, I unsrewed the screws that hold the computer in inside and then just popped the cover off.
Any ideas to "reset" the computer to have the truck start again.
And yeah I just popped the black cove off, I unsrewed the screws that hold the computer in inside and then just popped the cover off.
Any ideas to "reset" the computer to have the truck start again.
Post Fiend
Joined: Sep 2006
Posts: 5,584
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From: Millbrook Alabama
With batteries disconnected, do a load test on each battery seperatley. if they check good then reconnect cables making sure all connections are tight, and try again.
I know it sounds like a huge coincidence, but if the truck will turn over but wont crank more often than not its the batts.
I know it sounds like a huge coincidence, but if the truck will turn over but wont crank more often than not its the batts.
Thread Starter
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Senior User
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I will unhook the batteries, but I had both of them replaced last week so they are new and good. The battery gauge shows they have power also.
Is this the way to clear the pcm if the chip did trip anything.
I know on most cars unhooking the batteries sets everything back to normal mostly.
The truck will crank fine just not turn over, the wait to start light will not come on and the water in fuel is not on either which has been on since I got the truck. I've already had it checked and it is the sensor. just need to replace it
For disconnecting the batteries can I just disconnect the neg terminals or should I do everything
And seriously thanks to everyone that has helped out so far. I'm fairly new to the site but I appreciate the support of such a great community
Is this the way to clear the pcm if the chip did trip anything.
I know on most cars unhooking the batteries sets everything back to normal mostly.
The truck will crank fine just not turn over, the wait to start light will not come on and the water in fuel is not on either which has been on since I got the truck. I've already had it checked and it is the sensor. just need to replace it
For disconnecting the batteries can I just disconnect the neg terminals or should I do everything
And seriously thanks to everyone that has helped out so far. I'm fairly new to the site but I appreciate the support of such a great community