Tony302600 Posted April 12, 2008 Share Posted April 12, 2008 Joy, I have an int. stalling 7.3L. Has 136,000 on the ticker, did the recall hoping it would help it out but no When it stall's the Glow plug light does not come on when trying to restart. I drove it around yesterday nothing, let it cool down then drove it again, nothing. Customer came to pick it up and as soon as i turned the corner it stalled, then restarted, then drove it to my bay, stalled, then restarted. He left it overnight. Today I drove it cold again, nothing, nothing at all, DTC's are p0605, Reprogrammed PCM for the po605, Now it wont start at all and no glow plug light/no communication. Pinpoint for the p0605 is replace PCM, checked power's and ground's ok. No RPM Gauge does not move. disconnected water heater, nothing, disconnected, ICP, IPR, MAP, CAM, still no wait to start light/no communication. On edit: Customer called me to tell me that he has a hypermax chip in the PCM, I guess I have to go to the older program, Anyone know how to do that? Quote Link to comment Share on other sites More sharing options...
Jeff_E Posted April 12, 2008 Share Posted April 12, 2008 Quote: I guess I have to go to the older program, Anyone know how to do that? If he has an actual chip plugged into the pcm - unplug it and make sure the pcm isn't wrecked. If he just programed the pcm with an aftermarket calibration, you may need to do a "blank path" reflash. This is done by starting a new ids session with the ign key in the off position. When the ids can't make communication it should give you the option to check for a blank pcm. leave the key off and choose yes. when It still cant communicate it should give you the option to type in the vin number to manually identify the vehicle. Once you do so, go into module programming and choose programmable module installation. It will go through a series of having you turn the key on and off to try to identify the pcm part number...IGNORE THESE PROMPTS. The IDS, upon failing to identify the pcm will ask you to manually enter the pcm tear tag or part number. At this point turn the key on and type in the pcm number. It should do a PMI at this point based on the information you manually typed in. With IDS software version changes the procedure may not be exactly like I stated, but it should be similar. You may also need to manually type in as built data after doing this too. Now there is an option for this under module programming, and you just need to get the data off of PTS to manually enter. As far as the no communication I have dealt with a few. The most recent was last week when I had one that the fusible link junction mounted on the drivers inner fender (near the air cleaner box) had corroded to the point where it lost continuity and EVERYTHING went dead. (This was an intermittent problem at first, but eventually became quite the hard fault). Other causes for no communication/glow plug light that I've experienced: EP sensors, MAT sensors, Fuel heaters(this one should blow a maxi fuse), but basically any VREF sensor has the ability to do this. If you back probe something with a voltmeter and find your VREF is something other than 5V, start unplugging VREF sensors according to the EVTM until you find your problem. If that still doesn't find it, look for a harness chafe (like the drivers valve cover). But don't forget the basics...battery connections, voltage drop test body/engine grounds, amp test the pcm power and ground circuits with a bulb or other actual load. check the dlc wiring ect, you know, the basics!!! I hope this gives you some ideas Tony Quote Link to comment Share on other sites More sharing options...
Mekanik Posted April 12, 2008 Share Posted April 12, 2008 Hey Tony, I had one a few years ago that would stall intermitently. It turned out to be the actual chip that the customer installed. There must have been a loose connection inside the chip. I coulg get it to stall by pulling the pcm down and tapping the pcm. I removed the chip and it was fine. I can't remember what dtc I got, but it led to a pcm or a idm. Good luck. Quote Link to comment Share on other sites More sharing options...
Jim Warman Posted April 12, 2008 Share Posted April 12, 2008 I had an ongoing battle with one fairly "influential" customer... We would unplug his chip and throw it in his cubby hole... All would be well until he looked in the cubbyhole and saw the chip and plugged it back in ... back to the intermittent stalling.... In desparation, I unplugged the chip and kept it.... End of story.... Quote Link to comment Share on other sites More sharing options...
Mekanik Posted April 13, 2008 Share Posted April 13, 2008 Yeah, not the first time I heard of a chip causing a stalling concern. Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted April 13, 2008 Share Posted April 13, 2008 I guess we have all run into this! I had a couple PCM's over the years that were damaged because of a chip installation. In the old PCM's where the plug is removed for the chip I have come across the circuit board scraped up (coated?) where the chip plugs in. One was scratched up so sloppily that the board was gouged beyond the chip connection. Quote Link to comment Share on other sites More sharing options...
Tony302600 Posted April 14, 2008 Author Share Posted April 14, 2008 Ok here's exactly what happened. Friday morning get the ticket. 07s57 recall, crank/no-start. I open the hood, check oil, ok. Truck start's right up. Run it and drive it into my stall. Get IDS, hook it up, no communication? hmm, that weird. Cycle key, has communication, peform DTC's, all diag with IDS, drive it for 10 min...ok doing nothing. Only DTC's it has is the wastegate solenoid disconnected. Let it sit for 4 hours, drive it again...ok not doing anything. It sit's another 4 hours waiting for the customer....i go to pull it around, stall's twice, start's up right away. Tell service writer, guy say's when it happened to him, "started truck, reversed, put it in gear, hit throttle, it stalls, no glow plug light upon key cycling. tow's it in." Next morning, i get in the truck, drive it around...nothing, hookup IDS, p0605, ok...reprogram ( has later calibration ) now i have what i have now. (no start/communication, all sensor's disconnected) Call customer... he say's "Oh yea, I have a chip IN THE PCM (not through the DLC), it need's to be calibrated to PM1 not PM2, because i have a performance, trans and aftermarket turbo." I said, I could have avoided all this hassle if you would have told me that it already had a chip. He says " Well i have had the chip in it for a while and hasn't acted up til now." I said i'll figure it out monday, but more than likely it's ure chip. Now i have the no start sitting in my stall. We have another 7.3L sitting out back, im going to swap PCM's. If it start's then i'll tell him it's his chip/pcm. Quote Link to comment Share on other sites More sharing options...
Mekanik Posted April 14, 2008 Share Posted April 14, 2008 Tony, Just pull the chip out to see if the problem goes away. Quote Link to comment Share on other sites More sharing options...
Tony302600 Posted April 14, 2008 Author Share Posted April 14, 2008 Removed the chip...everything is ok. Hotline said "It is illegal and wouldn't tell me how to go back to an older calibration due to emmision and safety standards. If an aftermarket company does it then he must take it to them for any calibration other then what I put in." Customer is slightly mad even though he didn't tell me he has a chip in it. Manager said stop there, put the chip on the passenger seat and ship it. Quote Link to comment Share on other sites More sharing options...
LARRY BRUDZYNSKI Posted April 15, 2008 Share Posted April 15, 2008 Quote: Customer is slightly mad even though he didn't tell me he has a chip in it. Manager said stop there, put the chip on the passenger seat and ship it. Bravo to your boss for doing the right thing!!!! /forums/images/%%GRAEMLIN_URL%%/thumbup.gif /forums/images/%%GRAEMLIN_URL%%/thumbup.gif /forums/images/%%GRAEMLIN_URL%%/thumbup.gif Quote Link to comment Share on other sites More sharing options...
BrunoWilimek Posted April 15, 2008 Share Posted April 15, 2008 I hope you got paid for you time. The last chipped 7.3 that I found the chip loose causing the driveability concern, the customer asked to take it for a road test to see if it was fixed. That was several years ago and he never made it back to pay his bill. /forums/images/%%GRAEMLIN_URL%%/crybaby2.gif Quote Link to comment Share on other sites More sharing options...
eastendpowerstroke Posted April 16, 2008 Share Posted April 16, 2008 I hope you got paid for you time. The last chipped 7.3 that I found the chip loose causing the driveability concern, the customer asked to take it for a road test to see if it was fixed. That was several years ago and he never made it back to pay his bill. /forums/images/%%GRAEMLIN_URL%%/crybaby2.gif /forums/images/%%GRAEMLIN_URL%%/rofl.gif I recently had a similar situation, the customer came in complaining about his "Automatic transmission is making a grinding noise". I went with him on a road test to verify his grinding and told him that it's not his trans it's his 4" exhaust hitting the floor. he says can't be cause it's not all the time ,the best mechanic in the world put the exhaust on,he's had diesel trucks for 200 years and never had this before, ect....... it gotta be the trans. I pulled the truck in and adjusted the exhaust and retested all fine. The SM let the customer verify that it was fixed and we haven't seen him since.. somebody once said "If you loan someone $20 and never see them again, it was probably worth it" Quote Link to comment Share on other sites More sharing options...
LARRY BRUDZYNSKI Posted April 16, 2008 Share Posted April 16, 2008 Quote: he says can't be cause it's not all the time ,the best mechanic in the world put the exhaust on,he's had diesel trucks for 200 years and never had this before, And just think....We all have been brain washed that the customer is always right.....Any takers???Jim???? Quote Link to comment Share on other sites More sharing options...
Jim Warman Posted April 16, 2008 Share Posted April 16, 2008 Leave it to Larry to ask a prickly question..... Of course the customer is always right... but only if you have him seeing things from your perspective.... Other than that, he is, most times, an abject idiot.... you just can't say that to his face.... DAMHIKT!!!! I know my customer base well.... many of them first started coming to me in the early 80s. Mine is a small town and you get a feel for those that have placed you last on the list of "places to try" for those problems the bargoon stores can't fix. You can road test it AFTER you pay the bill.... WTF goes through a SAs mind when they hand someone the keys saying "OK Mr. Absolute Stranger, sir.... Here's your keys.... You hurry back, now...". Like the song says.... "here's your f@cking sign...". This opens up other avenues of discussion.... maybe later.... Quote Link to comment Share on other sites More sharing options...
Tony302600 Posted April 16, 2008 Author Share Posted April 16, 2008 Anytime we work on something, We or the SA go on a test drive. We've NEVER let a customer go by themselves. That doesn't do any justice. Quote Link to comment Share on other sites More sharing options...
DamageINC Posted April 23, 2008 Share Posted April 23, 2008 This goes for gas engines too, chips that are installed IN the PCM will notoriously cause stalls and no-starts if they rattle even just a little bit. For our high-performance customers who insist on chips, we always electrical-tape the living hell out of the chip to make SURE that it doesn't move at all once installed. Any time there's a chipped (literally) vehicle with a stall concern, I always recommend disconnecting the battery, removing the chip, cleaning the contacts, and FULLY securing it back into the PCM with enough tape to restrain a horny pitbull. Dave Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.