AE Scanner need help P1670
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
I think you're typing to fast Adam. 1278 & 1278 are the same code.Are you having problems with your van, or just learning to play with the new scanner? If the other code is 1273 and you've got the new gray CPS installed in your van, the codes might just be from the CPS. If that's the case, and everything else runs fine, I'd ignore the problem.
If you are chasing down a problem, the next step would be to ohm those 2 injectors from the connector on the valve cover and see if you get a reading below 5 ohms. 1271 is cylinder #1 and 1278 is the #8 cylinder. The codes and cylinder numbers are in order, so whatever the last digit is, that's what cylinder to look at. Drivers side has cylinders 2, 4, 6 & 8. Passenger side is 1, 3, 5 & 7.
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Senior User
Joined: Nov 2008
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Yes sory mistake this is p1272 and 1278 i been today on junk yard and i can buy burned engine international 7.3 1999 year injector looking good on that engine but i dont now if this is same engine i write information from this engine my is 2000 i dont i should buy.im working on second one van too i read this center pin on DC show 3.2 wire is not broken from i conect 23 on idm trhu center truck dont start i try warm truck should start Thank you ADAM
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Have you ohmed the injectors yet? Disconnect the plug on the valve cover and place on lead on a good ground and check the forward 2 pins and rear 2 pins against the ground looking for a reading lower than 2 ohms. Then place one lead on the center pin and check it against the 3rd, 4th, 6th, & 7th pins looking for a reading below 5 ohms. This is sounding more like a loose connector under the valve cover than bad injectors or a shorted wire.
That or just pull the drivers valve cover and look at the connector inside. See if it looks loose like this
I can only imagine how difficult it will be to pull the valve cover out of a van, hopefully it's not too bad. If you take the valve cover off, write down what the numbers are on top of your injectors. Check at least 2 of them since the back injector on the drivers side may have a different number. I'm not sure I'd put in a used injector from another truck unless it is all you can afford. I would think a rebuilt injector from one of our sponsors would be cheaper than a junkyard motor.
That or just pull the drivers valve cover and look at the connector inside. See if it looks loose like this
I can only imagine how difficult it will be to pull the valve cover out of a van, hopefully it's not too bad. If you take the valve cover off, write down what the numbers are on top of your injectors. Check at least 2 of them since the back injector on the drivers side may have a different number. I'm not sure I'd put in a used injector from another truck unless it is all you can afford. I would think a rebuilt injector from one of our sponsors would be cheaper than a junkyard motor.
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Senior User
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Thank you for respond ok i try like this i have number from this engine and injector number is AD1831551C1 and lower number is 55108268046 on the passenger side valve cover is year the engine is 1999 model B225F ADV 2250@2700 7.3 DIT ENGINE FAMILY XNVXH07.3FNH on that engine i see is navistar my is 2000 from mont 09 and not navisatar price is 200$ its the same injector
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On this truck i have code P0470 exhaust presure sensor and p1294 bank open 2. Can you help me on second truck i should change injector if i have P0272 and P0276 when truck is warm or i can repair this too.I think toomorow in the morning i go and buy this engine.Thank you Adam
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
0272 could mean a bad injector at #4. 0276 might be the same issue with a loose connector or wiring issue we just chased on the other van. Since both of these are on the same side (drivers) the harness might be suspect on this one too. If you run a cylinder contribution test, do any other codes show up? Does the #4 injector sound weaker if you run the injector buzz test?
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Senior User
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Yes i itjink buzz test past sucesuful no problem on buzz test just contribution test show this two codes i think i have too replace this two injector truck driving loose power like without turbo white emision. FIRST truck i put togeteher today on one post i saw this trick with 25 cents so i dothe same i can do some more on this side. THank you ADAm