My OBDI PR4 ECU was chipped with a kit from hyperducktuning. The kit consists of a 28pin socket, PYR EPROM, 74HC373N, resistor & jumper. When jumped (chipped mode) I get a CEL, the engine idles very high, and I have a rev limiter at 3000rpm. I know the programs are compatible with the ECU. What could be causing the problem?

 

could be some contact between pins during the install. Check all connections, it probably wont hurt to uninstall and reinstall the sockets. Just be careful. I am happy with one of my chips from him, the other one broke off one of the pins during shipping

 

Thanks brinks! If I posted some pics do you think you could maybe judge the solder job?

 

Here are some pics. They came out bad, but I'll take the ECU out and snap some more pics if you can't see anything. TIA

http://www.orbit3d.com/view.phtml?id=1290
http://www.orbit3d.com/view.phtml?id=1289

 

looks pretty good but you may have lifted one of the solder pads or broke the trace that goes to the pad during soldering. No way to see without a magnifying glass. You should go over all the connections using a magnifying glass. Remember there are connections on both the top and bottom of the board. You dont have to solder from the top, but thats why I sugested removing the socket so you can check to see if all is well underneath. A drop of solder didnt drop on any other part of the board right? Could also be a problem with one of the other components installed, did you check them out? And I assume the chip/socket face the proper direction?


[Modified by brinks, 9:58 PM 5/6/2002]

 

http://www.orbit3d.com/view.phtml?id=1294
http://www.orbit3d.com/view.phtml?id=1295
http://www.orbit3d.com/view.phtml?id=1296
http://www.orbit3d.com/view.phtml?id=1297


[Modified by teg92, 11:25 PM 5/6/2002]

 

the back is very easy to do. it seems it was soldered well but the connections which usually don't work are in the front, if the socket wasn't pushed in and didn't make a contact with the top pads then you will get the error code, remember that the PCB dual sided and padded with connections going to different places


brinks:
e-mail me and I'll send you a replecament chip, just send me a pic of the damaged part

thanks

 

My friend is having the same problem from gude. They chipped his ECU and it still doesn't work. I even desolder everything and resolder it but still doesn't work. I even switched out the chip with another programmed chip and still gets a check light. I wonder if I used the pre-OBD if it would work.

 

cool! your customer service rocks!