hayesfamily Report post Posted January 11, 2019 58 minutes ago, WILDEBILL308 said: Is that the long lost Keon Hayes'? Welcome back. Bill Shuuuu dont tell anyone! Especially that JLeamont GUY LOL! Share this post Link to post Share on other sites
TTRV Report post Posted January 11, 2019 Caterpillar tested the ECM today and it is dead as suspected, $80 for the test. The good news is they gave me a 6 page printout of my ECM settings that were captured in 2017. To come out to my RV 50 miles one way and replace and program with a new Caterpillar ECM is $4,598. And that is after the core refund. The two that helped me were very nice. They didn't say it but pretty much agreed I should try the one in the other junker RV I mentioned. They felt there may be some differences but no show stoppers. My engine serial number is a CKM6123, the junker is 7AS76282. Then I could drive it to them and the changes would be made to match my ECM configuration. Option 1 -- I will try the ECM out of the junker. In parallel I am googling for aftermarket, used whatever that would be willing to take the 6 pages of configuration and flash the ECM that I would purchase from them. I feel CAT wanted to work with me however policy inhibits caterpillar to flash an ECM that is not in the vehicle. Go figure. It will be probably 4-5 days before I can get this accomplished. Share this post Link to post Share on other sites
TTRV Report post Posted January 11, 2019 15 minutes ago, TTRV said: Caterpillar tested the ECM today and it is dead as suspected, $80 for the test. The good news is they gave me a 6 page printout of my ECM settings that were captured in 2017. To come out to my RV 50 miles one way and replace and program with a new Caterpillar ECM is $4,598. And that is after the core refund. The two that helped me were very nice. They didn't say it but pretty much agreed I should try the one in the other junker RV I mentioned. They felt there may be some differences but no show stoppers. My engine serial number is a CKM6123, the junker is 7AS76282. Then I could drive it to them and the changes would be made to match my ECM configuration. Option 1 -- I will try the ECM out of the junker. In parallel I am googling for aftermarket, used whatever that would be willing to take the 6 pages of configuration and flash the ECM that I would purchase from them. I feel CAT wanted to work with me however policy inhibits caterpillar to flash an ECM that is not in the vehicle. Go figure. It will be probably 4-5 days before I can get this accomplished. Sorry one last thing the superceded part number is 10R-3571. Share this post Link to post Share on other sites
wildebill308 Report post Posted January 12, 2019 Keep us updated. Bill Share this post Link to post Share on other sites
jleamont Report post Posted January 12, 2019 TTRV, see if there is a place that you can mail yours to and have it repaired. Probably just the injector driver portion that has failed. Fairly common on CAT due to heat, couple that with an RV application and low air circulation around it to keep it cool and failures become more common. It would save you from any programming also. Share this post Link to post Share on other sites
manholt Report post Posted January 12, 2019 They want a arm/leg and first born! That's steep labor cost. Share this post Link to post Share on other sites
TTRV Report post Posted January 26, 2019 Removed 1999 Junker ECM part# 157-3708-00, it was a little warped and looked like it may have been repaired in the past... Installed in Winnie and it immediately started up. All dash instrumentation working ok, test drove, cruise, air brake, shift points appear the same and power. It was a knuckle buster to install for my brother and I. Not sure if I will take it now to CAT and have them modify the ECM to match my engine serial number, mileage difference is only 16K more than winnie had , and then check settings. What do you'll think? Appreciate the help in this matter. Share this post Link to post Share on other sites
wolfe10 Report post Posted January 26, 2019 Yes, ECM should be flashed with specs for YOUR engine. A good time to make decisions on "pre-select" gear for exhaust brake. Should not be over 30 minutes of actual labor time. I would consider even one hour of labor a good investment. Share this post Link to post Share on other sites
TTRV Report post Posted January 27, 2019 Sir, I have the six page printout of the flash settings for my ECM. Do you know the parameter name for the setting you are referring to? I can scan all six pages if this might help? I did try the exhaust brake on my initial run and it executed I think as expected? I am right now leaning toward the CAT review. What pre-select gear do you feel it should be? Thank-you Tom Share this post Link to post Share on other sites
wolfe10 Report post Posted January 27, 2019 Two separate choices for exhaust brake with the Caterpillar 3126: What gear it "shifts toward" when the brake is engaged-- this gear will appear in the shift pad window on single window units and in the left window on two window units. 2nd and 4th are popular choices. My personal preference is 5th, as it allows more driver choices. It is ideal for those long, not too steep grades where a lower gear would over-brake, but does require the driver to use the down arrow to select lower gears. So, not as good for coming to a stop. Strictly personal choice. The other choice is whether the exhaust brake is in "manual mode" or "latch mode". Most are set to manual-- when the throttle is closed and switch turned on, the exhaust brake comes on. the BIG negative is you can't coast! In latch mode (my preference) you leave the switch on. It only comes on when the service brake is applied. It stays on even if you have your foot off the service brake until you hit the throttle. The only Caterpillar 3126 programming book I have is for 2005, so you will need to discuss these things with either Caterpillar Corp (877 777-3126) or with a Caterpillar dealer who will have specific info on your year model. Share this post Link to post Share on other sites
TTRV Report post Posted January 28, 2019 Thank-you for that advice. Just an FYI, a few options I see, Exhaust Brake Switch = Installed, Exhaust Brake Mode = Manual. I like your ideas. Appreciate the time. I am going to have CAT check/flash any changes -- this week I hope. If I understand what you are saying I will check that out this week. That I should see the gear in the shift pad window when i switch on the exhaust brake. And I know if my brake switch is on and I let off the accelerator it immediately engages -- I definitely would prefer the latch mode. TTRV Share this post Link to post Share on other sites
TTRV Report post Posted January 31, 2019 Just to wrap up. CAT Only changed what I would call cosmetic stuff, serial numbers, basically engine serial and chassis. Maybe a few other things. Most or all the options and values matched. $258.00. 2001 3126 most current part # for the (ECM is 10R-3571) (2001 blown Part #192-7896-01 ) replaced by (1999 157-3708-00) Symptoms -- (engine won't fire up but will crank) (While cranking RPM needle does not move) (ALT gauge does not move) (Through cruise control stick -- Cannot display Diagnostic codes) Check ECM fuse or fuses -- if they are good -- start kicking the tires. 🙂 CAT price for ECM $3,099.00 + programming plus plus plus, truckecm.com programming included around $2,000. Both carry a 1 year warranty. Share this post Link to post Share on other sites
manholt Report post Posted January 31, 2019 Confused, are you saying that you engine will not fire up after visit with CAT ? Share this post Link to post Share on other sites
TTRV Report post Posted January 31, 2019 No after CAT everything is still A-OK. I was just trying to relay initial symptoms that led to diagnosing a BAD ECM. Share this post Link to post Share on other sites
manholt Report post Posted January 31, 2019 Good, thanks...now you can keep camping, with peace of mind. Share this post Link to post Share on other sites
kaypsmith Report post Posted February 1, 2019 I'm glad it's going now and you did not have to give up the gold crowns. Way to go! Share this post Link to post Share on other sites
