99 turbo troubles
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99 turbo troubles
Hi all,
new to the site. I have an early 99 that I've owned for about 1yr. Love the truck but I think there's something wrong with either my waste gate or exhaust backpressure valve. The exhaust hisses like a jet engine when held at a steady throttle. If I accelerate or slow down the noise dissappears but comes back once I maintain a steady rpm. It used to do this only when the engine was cold but now it seems much more inconsistent, as the noise comes and goes even after it has been running for quite a while. Some days I don't hear the noise at all but lately it has been getting worse. I have noticed a loss in power when the noise is present. I have a bullydog programmer that gave me the following code
0236- Turbocharger Boost Sensor A Ckt Range/Performance
Is this a common problem, or is there anything in particular that I should be checking? I'm fairly mechanically inclined but new to diesels so I'm not too familiar with the inner workings of a turbo.
Thanks I appreciate any help you can give me...
Matt
new to the site. I have an early 99 that I've owned for about 1yr. Love the truck but I think there's something wrong with either my waste gate or exhaust backpressure valve. The exhaust hisses like a jet engine when held at a steady throttle. If I accelerate or slow down the noise dissappears but comes back once I maintain a steady rpm. It used to do this only when the engine was cold but now it seems much more inconsistent, as the noise comes and goes even after it has been running for quite a while. Some days I don't hear the noise at all but lately it has been getting worse. I have noticed a loss in power when the noise is present. I have a bullydog programmer that gave me the following code
0236- Turbocharger Boost Sensor A Ckt Range/Performance
Is this a common problem, or is there anything in particular that I should be checking? I'm fairly mechanically inclined but new to diesels so I'm not too familiar with the inner workings of a turbo.
Thanks I appreciate any help you can give me...
Matt
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
Welcome to FTE. 
It sounds like you may have a temperature sender that is failing and the PCM thinks the engine is still cold or that you are driving in arctic conditions.
The one sender that I know, (personal experience) influences the opening and closing of the EBPV is the temp sender that is mounted in the bottom half of the air cleaner housing. Unplug it and the EBPV defaults to always open and it also disables the high warm-up idle.
But that's not really fixing the problem. It would be good to start testing the senders and/or just replace them.
It sounds like you may have a temperature sender that is failing and the PCM thinks the engine is still cold or that you are driving in arctic conditions.
The one sender that I know, (personal experience) influences the opening and closing of the EBPV is the temp sender that is mounted in the bottom half of the air cleaner housing. Unplug it and the EBPV defaults to always open and it also disables the high warm-up idle.
But that's not really fixing the problem. It would be good to start testing the senders and/or just replace them.
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Joined: Oct 2007
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Thanks for the info. I unplugged the airbox sender and it did just like you said. I'll have to start testing senders, it's not getting any warmer up here in Manitoba these days, the sooner I can get my high idle back the better. Appreciate the help...
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Visseroth
1999 - 2003 7.3L Power Stroke Diesel
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Dec 27, 2009 11:13 AM
