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Old 08-13-2019, 07:33 PM   #11
Zundfolge
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Default Re: 03 t1n 3500 no boost

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Originally Posted by sprinter 316 View Post
I think that the turbo has **** itself if you have checked the boost solenoid and thatís fine too then I would have a closer look at your turbo. The front of your turbo compressor may be fine and move freely like normal. But he shaft at the back of the turbo may have snapped. Take the exhaust off and have a look mate.
That's a large jump to make. Turbos have extremely tight tolerances, if something that major had happened one you'd hear it, and two there would be zero boost (there'd actually be negative boost, or vacuum) while driving, and he gets about 3 psi. You could triple check this by just turning the van on for a few seconds with the air intake tube disconnected and watch the compressor wheel spin.

Sounds like somehow the vanes are open full time?
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Old 08-13-2019, 07:35 PM   #12
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Default Re: 03 t1n 3500 no boost

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Originally Posted by Cheyenne View Post
A vacuum reservoir.
Could that reservoir be bad?


I donít think my shaft is broke seeing If I pinch my lower hose on the boost converter itíll move my vane actuator, I can take a drive and Iíll have 30+ psi of boost (able to monitor it with my scanner to make sure I donít over boost since itíll be full bore and wonít change the vanes..)
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Old 08-13-2019, 07:36 PM   #13
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Default Re: 03 t1n 3500 no boost

I have done that as well and yes she does spin.
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Old 08-13-2019, 07:38 PM   #14
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Default Re: 03 t1n 3500 no boost

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Originally Posted by Godzills14 View Post
Could that reservoir be bad?


I donít think my shaft is broke seeing If I pinch my lower hose on the boost converter itíll move my vane actuator, I can take a drive and Iíll have 30+ psi of boost (able to monitor it with my scanner to make sure I donít over boost since itíll be full bore and wonít change the vanes..)
Sounds to me like either your boost solenoid is not working or you have a vacuum leak.

It would really help if you could get scanned for codes. When my boost solenoid failed I did not get a CEL but the stored code gave the clue as to what was wrong.

Keith.
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Old 08-13-2019, 07:42 PM   #15
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Default Re: 03 t1n 3500 no boost

Maybe The boost solenoid is playing up mate. When I changed mine I bought it brand new and even that was faulty. I then returned it and got another one from the same place and then my van was perfect. The issue after changing my turbo was that when I put the new boost solenoid and then has turbo sorted the turbo had lag. Came on boost later in the Rev range. So swapped it and then it was perfect. If you was local to me I would have let you swap it with mine to check
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Old 08-13-2019, 07:44 PM   #16
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Default Re: 03 t1n 3500 no boost

I think when mine was playing up it came up as charge pressure being low throwing the code p1470.
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Old 08-13-2019, 07:46 PM   #17
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Default Re: 03 t1n 3500 no boost

Do you have a mighty vac? I'd start testing vac lines and boost solenoid with one first. That would tell you if the reservoir or any other thing wouldn't hold vacuum...

Edit: a decent scanner that speaks Sprintish is a must have if you own a Sprinter. If you're on a budget folks here are seeming to be impressed lately with the Autel AP200 dongle thingy. Connects to a smartphone and seems to have decent functionality...
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Old 08-13-2019, 07:54 PM   #18
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Default Re: 03 t1n 3500 no boost

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Originally Posted by Zundfolge View Post
Do you have a mighty vac? I'd start testing vac lines and boost solenoid with one first. That would tell you if the reservoir or any other thing wouldn't hold vacuum...

Edit: a decent scanner that speaks Sprintish is a must have if you own a Sprinter. If you're on a budget folks here are seeming to be impressed lately with the Autel AP200 dongle thingy. Connects to a smartphone and seems to have decent functionality...
Totally agree!!!

I have the slightly older Autel MD802 and have been very impressed with its ability to diagnose faults from multiple vehicle manufacturers including my UK spec Sprinter, which is NOT OBD compliant.

The only downside with the AP200 dongle is it is really only a one vehicle dongle.

Keith.
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Old 08-13-2019, 08:25 PM   #19
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Default Re: 03 t1n 3500 no boost

Yea I’ll look into I’ve never taken any of my rigs to a shop but this thing ... I want to just drop it off and pick it up working. I’ve replaced my boost converter twice now once when I did the turbo a year ago and just now, also checked ohms when I pulled my “old” one out and it was good (checked ohms via this forum compared the reading to the new one and were the same.) And it did not change a thing.

I have a mighty vac just realized it’s my brake bleeder... �� I’ll check some vac lines later and sprinter scanner is on my to buy list about to be on my purchased list cuz I need this thing back fully operational.

How would I check my boost converter...?

Last edited by Godzills14; 08-13-2019 at 08:28 PM. Reason: Added info
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Old 08-13-2019, 08:38 PM   #20
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Default Re: 03 t1n 3500 no boost

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Originally Posted by Zundfolge View Post
That's a large jump to make. Turbos have extremely tight tolerances, if something that major had happened one you'd hear it, and two there would be zero boost (there'd actually be negative boost, or vacuum) while driving, and he gets about 3 psi. You could triple check this by just turning the van on for a few seconds with the air intake tube disconnected and watch the compressor wheel spin.

Sounds like somehow the vanes are open full time?
Your right mate. I guess thereís more knowledgable people here I just assumed it because of my experience. I hope it ainít the turbo and just a cheap fix though
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