IDM issue... I Think???
Thread Starter
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Tuned
Joined: Feb 2008
Posts: 445
Likes: 1
From: Forest Grove, BC
Hey Hussler. Thanks for the link That's Great!!! I have done some of these checks already.. I will redo today just to verify.
The test to determine if wire harness to IDM plug has open circuit on the high and low sides , I took that test a step further, by connecting the gasket and UVC harnesses and tested between the injector plug and the IDM plug.. I got 0.2 -0.4 ohms.
Please correct me if im wrong, but that test tells me I have a GOOD connection through the harness form Inj. plug to IDM plug. With nothing OPEN in that harness
I tested all injectors ( 2, 4 ,6, 8) for resistance from high to low and got 2.6 - 2.7 ohms.
That tells me they are good.
So.... The question I have is where else could there be a problem for me to get all these codes, 1272, 74, 76, 78. 1296, 0276
????????????????????????/
The test to determine if wire harness to IDM plug has open circuit on the high and low sides , I took that test a step further, by connecting the gasket and UVC harnesses and tested between the injector plug and the IDM plug.. I got 0.2 -0.4 ohms.
Please correct me if im wrong, but that test tells me I have a GOOD connection through the harness form Inj. plug to IDM plug. With nothing OPEN in that harness
I tested all injectors ( 2, 4 ,6, 8) for resistance from high to low and got 2.6 - 2.7 ohms.
That tells me they are good.
So.... The question I have is where else could there be a problem for me to get all these codes, 1272, 74, 76, 78. 1296, 0276
????????????????????????/
Lead Driver
Joined: Oct 2003
Posts: 8,476
Likes: 37
From: Madison, WI
Are you working from a diagram or the EVTM, doing the ohm checks from the IDM connector to the injector terminals, to determine that you were checking at the correct terminal positions/ numbers on the IDM connector?
IDMs are interchangeable from '94.5 to '03; not specific by tranny, year, etc. So you should be able to find a used one as a spare for $100-ish. And +1 on having a spare as a good measure.
IDMs are interchangeable from '94.5 to '03; not specific by tranny, year, etc. So you should be able to find a used one as a spare for $100-ish. And +1 on having a spare as a good measure.
Lead Driver
Joined: Oct 2003
Posts: 8,476
Likes: 37
From: Madison, WI
Do the buzz test again, with your buddy helping, and as it buzzes each one, listen under the hood and make sure it does it in order. I'm pretty sure it goes 1-8, with 1 being the passenger side front, 2 is the driver side front, 3 is passenger side next one, etc. up to 8 being driver side rear. The buzz test can check each injector solenoid, but it has no idea if they're in the right positions. If you've got two injectors switched with one another, it'll pass the buzz test, but the truck won't start.
Thread Starter
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Tuned
Joined: Feb 2008
Posts: 445
Likes: 1
From: Forest Grove, BC
I will do another Buzz in the morning and confirm the sequence is correct.
If still no codes Im going to look at rpm's when cranking.. Im thinking about changing the CPS as I did have a stall at a light before the thing died on me
If still no codes Im going to look at rpm's when cranking.. Im thinking about changing the CPS as I did have a stall at a light before the thing died on me
Thread Starter
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Tuned
Joined: Feb 2008
Posts: 445
Likes: 1
From: Forest Grove, BC
OK Did Buzz test again and confirmed that the sequence is correct. Test passed and a P1111 came up
Then did a KOEO test with my AE and got theses codes:
-p1280
-p0113
-p0236
-p1781
While cranking I have watched the ICP and it seems good around 2200 psi
I still have a No start condition
I installed a new CPS and tried to start.. Same thing NO Start
When cranking I have NO smoke coming fro exhaust, so that means No fuel...
I know injector circuit is now good and Buzz passed.
I have confirmed fuel at filter and reg, but have Not been able to rig up a guage yet.
Will my AE read fuel preasure???
Then did a KOEO test with my AE and got theses codes:
-p1280
-p0113
-p0236
-p1781
While cranking I have watched the ICP and it seems good around 2200 psi
I still have a No start condition
I installed a new CPS and tried to start.. Same thing NO Start
When cranking I have NO smoke coming fro exhaust, so that means No fuel...
I know injector circuit is now good and Buzz passed.
I have confirmed fuel at filter and reg, but have Not been able to rig up a guage yet.
Will my AE read fuel preasure???
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Lead Driver
Joined: Jun 2004
Posts: 6,334
Likes: 587
From: Amarillo, TEXAS!
Is your ICP sensor disconnected? 2200 psi is the default value while cranking. You also have an ICP sensor related code, so it would make sense that the PCM is using a default while cranking if it isn't getting a signal from the sensor. Do you have a mechanical gauge, or a spare ICP sensor?
Thread Starter
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Tuned
Joined: Feb 2008
Posts: 445
Likes: 1
From: Forest Grove, BC
while cranking on my AE im getting :
-ICP 2460
-ICP Duty cycle 35.94%
-FI pulse width 0.32 ms
I removed my HPO X-over and installed a guage and Getting ZERO PSI.....
WTF is going on with this thing??
-ICP 2460
-ICP Duty cycle 35.94%
-FI pulse width 0.32 ms
I removed my HPO X-over and installed a guage and Getting ZERO PSI.....
WTF is going on with this thing??
Thread Starter
|
Tuned
Joined: Feb 2008
Posts: 445
Likes: 1
From: Forest Grove, BC
Pretty sure there is oil.. Every time I loosen or remove oil line from rail there is oil coming out.
Is the IRP similar to the one in the 6L, with the screen that needs cleaning periodically??
Is the IRP similar to the one in the 6L, with the screen that needs cleaning periodically??