Bruces
Well-Known Member
- Messages
- 215
- Location
- Portland, TN
I purchased a used pcm and sent it off to get a tune added. Once it arrived I installed it. First issue I had was during case relearn I received an error saying the tech2 lost connections. I figured I must have accidentally bumped the connector as you must put one foot on brake and one on accelerator. Restarted process and completed with no issues.
i then took a long (200 mile) test drive to feel the performance improvements and give the obd a chance to run through self diagnostics. None of the test ran. Also while driving the radio turned itself off for a few seconds then back on several times. After the second time I kept an eye on the dash to see if anything else was going on. I noticed that when the radio, whether on local Channels or xm, went off it appeared to loose complete power (no clock). When it comes back on it always reverts to fm band. The radio also retained all of the channels programmed and correct time though.
Also while driving I left the actron scan tool on to watch live data and drive cycle monitors. Multiple times it would loose connection with obd requiring me to restart tool. It is powered by obd and never lost power, just connection with CAN bus.
When I got home I put the stock PCM back in and everything is back to normal. Poor performance, shift points and all. No gremlins.
I contacted tuner to talk about issue. I figured that I must have bought a bad second hand PCM (tried saving a few bucks) so I ordered one from tuner and he put the tune on theirs for me then mailed it out. Once it arrived I installed that one and same issues as before.
After driving several days of the obd self test have all run except the evap The only codes I have been getting are “U” codes. The more I drive the less codes I get but radio continues to appear to lose power. Any ideas on how to resolve. Anyone else run into this after pcm tune. 2007 h3 i5 and never had issues before and still have no issues with stock pcm installed.
Also so as an FYI I ran every test that tech2 has and everything on bcm, digital radio module and radio module show all good with no codes or issues.
i then took a long (200 mile) test drive to feel the performance improvements and give the obd a chance to run through self diagnostics. None of the test ran. Also while driving the radio turned itself off for a few seconds then back on several times. After the second time I kept an eye on the dash to see if anything else was going on. I noticed that when the radio, whether on local Channels or xm, went off it appeared to loose complete power (no clock). When it comes back on it always reverts to fm band. The radio also retained all of the channels programmed and correct time though.
Also while driving I left the actron scan tool on to watch live data and drive cycle monitors. Multiple times it would loose connection with obd requiring me to restart tool. It is powered by obd and never lost power, just connection with CAN bus.
When I got home I put the stock PCM back in and everything is back to normal. Poor performance, shift points and all. No gremlins.
I contacted tuner to talk about issue. I figured that I must have bought a bad second hand PCM (tried saving a few bucks) so I ordered one from tuner and he put the tune on theirs for me then mailed it out. Once it arrived I installed that one and same issues as before.
After driving several days of the obd self test have all run except the evap The only codes I have been getting are “U” codes. The more I drive the less codes I get but radio continues to appear to lose power. Any ideas on how to resolve. Anyone else run into this after pcm tune. 2007 h3 i5 and never had issues before and still have no issues with stock pcm installed.
Also so as an FYI I ran every test that tech2 has and everything on bcm, digital radio module and radio module show all good with no codes or issues.
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