Bluebulldog Posted November 29, 2021 Share Posted November 29, 2021 This thing needed to stay in a warm climate I guess. Everything works great till it gets to 30 degrees then it’s all over just like clock work! 2000 Ch613 having 1-1 an 2-3 codes every morning till it gets warm. 1-1 is oil pressure sending unit I guess haven’t changed it yet but it’s ordered. 2-3 is manifold temp changed it many times with no avail so just live with that. But it will shut down few times before it gets warm enough to shut off the light. Any ideas? Quote Link to comment https://www.bigmacktrucks.com/topic/68848-blink-codes/ Share on other sites More sharing options...
Onyx610 Posted November 29, 2021 Share Posted November 29, 2021 See what happens once the oil pressure sending unit is changed. With those two codes that would be the one to shut it down. Something must change with heat to make it happy. Quote Link to comment https://www.bigmacktrucks.com/topic/68848-blink-codes/#findComment-483689 Share on other sites More sharing options...
fjh Posted November 29, 2021 Share Posted November 29, 2021 1 hour ago, Onyx610 said: See what happens once the oil pressure sending unit is changed. With those two codes that would be the one to shut it down. Something must change with heat to make it happy. yup we just did one of these! get the sensor! make sure your inlet boot is sealing on the hood just something to try for the other code 1 Quote Link to comment https://www.bigmacktrucks.com/topic/68848-blink-codes/#findComment-483695 Share on other sites More sharing options...
Onyx610 Posted November 30, 2021 Share Posted November 30, 2021 10 hours ago, fjh said: yup we just did one of these! get the sensor! make sure your inlet boot is sealing on the hood just something to try for the other code Doesn’t Mack suggest checking this by applying grease to the boot and closing the hood, then lift it up and check the print? Quote Link to comment https://www.bigmacktrucks.com/topic/68848-blink-codes/#findComment-483732 Share on other sites More sharing options...
Bluebulldog Posted December 1, 2021 Author Share Posted December 1, 2021 What would the air intake on the hood have to do with air intake sensor? It comes on immediately when you turn the key on with out engine running and stays on until it gets up to operating temp. I can see the hood warming the air coming in but not right as it starts. Quote Link to comment https://www.bigmacktrucks.com/topic/68848-blink-codes/#findComment-483767 Share on other sites More sharing options...
Onyx610 Posted December 1, 2021 Share Posted December 1, 2021 You never said it was as soon as you turned the key on, if it was when it was running and the boot was leaking it would pry be because of the cold outside air and warm engine air mixing and throwing the sensor all over the map. That’s my guess anyway. fjh has a good reason for suggesting that, he really knows his stuff. Anyway sounds like a bad sensor to me. I’ll check the book tomorrow morning for a ohm test or something. Quote Link to comment https://www.bigmacktrucks.com/topic/68848-blink-codes/#findComment-483769 Share on other sites More sharing options...
Bluebulldog Posted December 1, 2021 Author Share Posted December 1, 2021 Had it plugged in this morning and all was well about 35 degrees outside. Sensor is in I just need to go get it. Thanks for the help guys. Quote Link to comment https://www.bigmacktrucks.com/topic/68848-blink-codes/#findComment-483781 Share on other sites More sharing options...
Onyx610 Posted December 1, 2021 Share Posted December 1, 2021 Awesome. Let us know how you make out. Quote Link to comment https://www.bigmacktrucks.com/topic/68848-blink-codes/#findComment-483782 Share on other sites More sharing options...
Bluebulldog Posted December 6, 2021 Author Share Posted December 6, 2021 Finally got the right oil pressure sensor. It’s 30degrees the malfunction light is on when the key is turned on stays on about 1 min with the engine running then goes out. Blink code still says 1-1 while it’s on. Guess we’ll see when it gets cold. As for the 2-3 the boot on the filter had a loose clamp and could just slide away from the hood haven’t seen that code sense 🤷. Suppose to get cold here later this week if I get it back out of the shop from fixing a air leak we’ll see what happens. Quote Link to comment https://www.bigmacktrucks.com/topic/68848-blink-codes/#findComment-484241 Share on other sites More sharing options...
Onyx610 Posted December 6, 2021 Share Posted December 6, 2021 Curious to see what happens, I wonder if the code just needs cleared or will go out with so many key cycles. Not sure, I’m sure someone will have that answer. Quote Link to comment https://www.bigmacktrucks.com/topic/68848-blink-codes/#findComment-484255 Share on other sites More sharing options...
Bluebulldog Posted December 8, 2021 Author Share Posted December 8, 2021 Finally got the right oil pressure sensor. It’s 30degrees the malfunction light is on when the key is turned on stays on about 1 min with the engine running then goes out. Blink code still says 1-1 while it’s on. Guess we’ll see when it gets cold. As for the 2-3 the boot on the filter had a loose clamp and could just slide away from the hood haven’t seen that code sense 🤷. Suppose to get cold here later this week if I get it back out of the shop from fixing a air leak we’ll see what happens. Quote Link to comment https://www.bigmacktrucks.com/topic/68848-blink-codes/#findComment-484487 Share on other sites More sharing options...
Bluebulldog Posted December 8, 2021 Author Share Posted December 8, 2021 19 degrees this morning. I have 1-1,2-3,1-3, blink codes. Truck is sitting running idle. All I know is take it to dealer an let them plug into it an see if they see something that isn’t right. Quote Link to comment https://www.bigmacktrucks.com/topic/68848-blink-codes/#findComment-484488 Share on other sites More sharing options...
Onyx610 Posted December 8, 2021 Share Posted December 8, 2021 Damn…atleast it’s running I guess. Somehow all those codes must be tied into eachother. Low voltage at the sensors. Let us know what you find out. Quote Link to comment https://www.bigmacktrucks.com/topic/68848-blink-codes/#findComment-484493 Share on other sites More sharing options...
Bluebulldog Posted December 8, 2021 Author Share Posted December 8, 2021 Odd thing is it has that malfunction light on with those codes will set an run normally you leave with it an out of the blue it will kick the shut down light on and shut it off. May have to stop and restart it may come back 🤷. what does that ambient temp sensor have to do with anything? Quote Link to comment https://www.bigmacktrucks.com/topic/68848-blink-codes/#findComment-484498 Share on other sites More sharing options...
Bluebulldog Posted December 8, 2021 Author Share Posted December 8, 2021 (edited) So what is this telling me that the three have in common ground? What does the ej1 stand for? Edited December 8, 2021 by Bluebulldog Quote Link to comment https://www.bigmacktrucks.com/topic/68848-blink-codes/#findComment-484511 Share on other sites More sharing options...
Onyx610 Posted December 8, 2021 Share Posted December 8, 2021 I believe J1 and J2 are the connectors to the EECU. EJ1 connector at the front end of the EECU. The “E” is pry for engine Quote Link to comment https://www.bigmacktrucks.com/topic/68848-blink-codes/#findComment-484516 Share on other sites More sharing options...
Joey Mack Posted December 8, 2021 Share Posted December 8, 2021 its the J1 connector on the engine computer.. the printing on the wires is Identification. ie: EJ1-26-0.5 means ' plug J1, wire #26, 0.5 is the wire size.. this is likely the ground circuit.. notice other wires have different wire #'s. they too are associated with the pin location in the plug. very hard to see the numbers on the plug. I need a magnifying glass, now that I'm older... keep in mind when you read a schematic, generally , the top is power in and the bottom of the diagram is the negatives.. this particular diagram is a bit different, jojo Quote Link to comment https://www.bigmacktrucks.com/topic/68848-blink-codes/#findComment-484519 Share on other sites More sharing options...
Joey Mack Posted December 8, 2021 Share Posted December 8, 2021 Just in case you chase wires in the cab. They will say VJ1-2or3, then wire # then a letter, (a,b,c) for example.. those represent intersections in the wires, and then the wire size will be the last #.. The V stands for V.E.C.U. jojo Quote Link to comment https://www.bigmacktrucks.com/topic/68848-blink-codes/#findComment-484520 Share on other sites More sharing options...
Onyx610 Posted December 8, 2021 Share Posted December 8, 2021 Interesting, thanks Joey. Possible VECU? Clearly do a bunch of tests before jumping to that. I’d say make sure the connector is all the way in and also the pins look good. Then check voltages at the pins and after the sensor. Quote Link to comment https://www.bigmacktrucks.com/topic/68848-blink-codes/#findComment-484521 Share on other sites More sharing options...
Bluebulldog Posted December 8, 2021 Author Share Posted December 8, 2021 I think this is going to get over my head in a hurry 😄 Quote Link to comment https://www.bigmacktrucks.com/topic/68848-blink-codes/#findComment-484524 Share on other sites More sharing options...
Onyx610 Posted December 8, 2021 Share Posted December 8, 2021 I think you can do it, there’s only one way to learn and it doesn’t hurt to try! If you decide to tackle it there are some really good guys on here to help you. I can also look in the book tomorrow for tests and post pictures of it for you. Quote Link to comment https://www.bigmacktrucks.com/topic/68848-blink-codes/#findComment-484525 Share on other sites More sharing options...
Joey Mack Posted December 8, 2021 Share Posted December 8, 2021 no sweat.. if you have questions, post pics with them when possible.. The reason I posted about wire I.D. is to show you how helpful it is to follow the circuit. jojo Quote Link to comment https://www.bigmacktrucks.com/topic/68848-blink-codes/#findComment-484526 Share on other sites More sharing options...
Joey Mack Posted December 8, 2021 Share Posted December 8, 2021 have you removed the J1 plug and inspect the pins? #26 specifically..do you have a helper who can watch the light, while you gently move the J1 plug while running ,without unplugging it? Quote Link to comment https://www.bigmacktrucks.com/topic/68848-blink-codes/#findComment-484528 Share on other sites More sharing options...
Joey Mack Posted December 8, 2021 Share Posted December 8, 2021 i forgot... the J1 plug is the one on the right. Quote Link to comment https://www.bigmacktrucks.com/topic/68848-blink-codes/#findComment-484529 Share on other sites More sharing options...
Bluebulldog Posted December 9, 2021 Author Share Posted December 9, 2021 How do I find the j1 plug. It’s on the ecm on the right side of the engine? I seen there were two plugs out the top didn’t look any farther. I kinda thought that the rear plug was not completely latched into the ecm need to look closer. Quote Link to comment https://www.bigmacktrucks.com/topic/68848-blink-codes/#findComment-484531 Share on other sites More sharing options...
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