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| 2005 CRD Low Power Black Smoke scanner readings? http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=5&t=83896 |
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| Author: | exira [ Thu Jan 21, 2016 8:19 pm ] |
| Post subject: | 2005 CRD Low Power Black Smoke scanner readings? |
So, these are a little harder to diagnose since my scanner wont pick up this ecm other than global. starts good, runs smooth black smoke, cant hardly hear turbo codes according to my scanner are p1263 p1267 CAC Tubes are ok I cleaned MAP sensor, it was caked. --with my scanner it reads 29inhg, im 1400 above sea level. WOT it will bump up to 37.5 and thats it. Are these VGT Turbo? --Does vgt/wastegate give issues? how do i check Does the throttle plate give problems? maybe its stuck half shut? Would stuck open EGR cause this? -- i unplugged MAF and nothing changed thanks,Willy |
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| Author: | LazyK [ Thu Jan 21, 2016 9:05 pm ] |
| Post subject: | Re: 2005 CRD Low Power Black Smoke scanner readings? |
P1259 - glow plug module control over-current condition P1260 - glow plug #1 control circuit open P1261 - glow plug #1 control circuit low P1262 - glow plug #2 control circuit open P1263 - glow plug #2 control circuit low P1264 - glow plug #3 control circuit open P1265 - glow plug #3 control circuit low P1266 - glow plug #4 control circuit open P1267 - glow plug #4 control circuit low |
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| Author: | exira [ Thu Jan 21, 2016 10:03 pm ] |
| Post subject: | Re: 2005 CRD Low Power Black Smoke scanner readings? |
I'm not sure which codes to believe, but I'm almost positive it's not a glow plug code Manufacturer controlled air metering is what makes more sense, seems how it's over fueling, or "under airing" |
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| Author: | mass-hole [ Thu Jan 21, 2016 10:19 pm ] |
| Post subject: | Re: 2005 CRD Low Power Black Smoke scanner readings? |
exira wrote: So, these are a little harder to diagnose since my scanner wont pick up this ecm other than global. starts good, runs smooth black smoke, cant hardly hear turbo codes according to my scanner are p1263 p1267 CAC Tubes are ok I cleaned MAP sensor, it was caked. --with my scanner it reads 29inhg, im 1400 above sea level. WOT it will bump up to 37.5 and thats it. Are these VGT Turbo? --Does vgt/wastegate give issues? how do i check Does the throttle plate give problems? maybe its stuck half shut? Would stuck open EGR cause this? -- i unplugged MAF and nothing changed thanks,Willy They are VGT and yes people have had issues with the vanes getting stuck. Its also possible for the vacuum actuator to fail or spring a leak causing to not be able to control the vanes. A stuck EGR could cause this by dumping exhaust pressure to the intake. |
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| Author: | flash7210 [ Fri Jan 22, 2016 9:14 am ] |
| Post subject: | Re: 2005 CRD Low Power Black Smoke scanner readings? |
exira wrote: --with my scanner it reads 29inhg, im 1400 above sea level. Is that reading at idle or while driving? Possible problems include: MAP sensor boost control solenoid (large vacuum solenoid behind air filter box) vacuum leak boost leak (hoses or intercooler) stuck open EGR valve stuck turbo vanes worn or damaged rocker arms Start with the easy items first. Also, you may want to remove and inspect the turbo inlet hose for holes. And while the inlet hose is off, stick you fingers into the turbo and try to wiggle the shaft to see if there is excessive movement (front to back and side to side). The codes may be totally unrelated to the low power/black smoke problem. And if you have never replaced your glow plugs its probably time to do so. While you are at it, find a way to disable, block, or delete your EGR valve. |
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| Author: | exira [ Fri Jan 22, 2016 11:31 am ] |
| Post subject: | Re: 2005 CRD Low Power Black Smoke scanner readings? |
ok the 29inhg is at idle, 37.5 is max wide open throttle ive pulled inake tube off and it is ok, little oily around, but the inlet of turbo and compressor wheel are clean, spins freely, no in and out play and common up and down litttle wiggle it could be the rockers, i have replaced the whole shabang on another along with cams if it were he rockers, i wouldnt think the engine would run and smooth and quiet as it does. The map i think i have eliminated, 29inhg is around 14 psi which would be correct for where im at. I believe im boosting about 4 psi ha how do i check the boost solenoid? is there a way to move vanes open and closed or hear them functioning. this would be much easier with a starscan ha |
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| Author: | flash7210 [ Fri Jan 22, 2016 1:50 pm ] |
| Post subject: | Re: 2005 CRD Low Power Black Smoke scanner readings? |
The vanes on the turbo are moved by a vacuum actuator. High vacuum = high boost low vacuum = low boost At idle, vacuum is high. With the engine idling, pull the vacuum line off the turbo actuator. Can you feel vacuum from the line? If yes, reconnect the vacuum line while looking down on the turbo and watching the actuator lever/arm on the turbo move. Disconnect and reconnect this line to ensure there is adequate movement of the lever. If little to no movement, then the vanes are stuck and should be cleaned. If there is no vacuum at the line then the problem is with one of the two vacuum solenoids. The small solenoid is just a on/off function that opens and closes the vacuum supply to the vacuum reservoir. It can be bypassed to restore turbo function if not working properly. The larger solenoid actually controls vacuum to the turbo. It cannot be bypassed and usually makes a loud buzzing noise when going bad. It also has a little filter dangling from it that should be replaced if noticeably dirty. |
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| Author: | exira [ Fri Jan 22, 2016 5:25 pm ] |
| Post subject: | Re: 2005 CRD Low Power Black Smoke scanner readings? |
Well I'm hoping that it's as simple as no vacuum, thanks! I know on cummins vgt turbo there is a cleaning port, any such thing on these? |
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| Author: | exira [ Fri Jan 22, 2016 6:09 pm ] |
| Post subject: | Re: 2005 CRD Low Power Black Smoke scanner readings? |
Thanks again guys, this site has been great! will hopefully look at it again beginning of the week and let you know the outcome |
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