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go-west..
go-west.., Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 1152
Experience:  Technican with 20 years experience focused on engines and electrical.
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I have an 2008 Peterbilt with an isx cummins. I could get

Customer Question

I have an 2008 Peterbilt with an isx cummins. I could get more info about if in the morning but the truck doesn't have much power it only will build about 31-32 pounds of boost and it normally builds 41-42. The check engine light is on and it says fuel shut off valve. I got a code spn 632 fmi 7 and it says engine fuel shutoff 1 control
Submitted: 4 months ago.
Category: Medium and Heavy Trucks
Expert:  go-west.. replied 4 months ago.
Good evening
Can I get your engine serial number please?
Customer: replied 4 months ago.
I don't have it on me right now, I can get it in a little while
Customer: replied 4 months ago.
I do have the vin of the truck but not the engine serial number
Customer: replied 4 months ago.
The engine number is- 79239758
Customer: replied 4 months ago.
Just to give you a little more info, the code is active and will not clear. Also we just recently got the truck and since we have had it, it always takes a few seconds to shit off, if you turn the key to the off position it will continue to run for about 5 seconds but the truck never had any running issues.now it doesn't have the power that it should
Expert:  go-west.. replied 4 months ago.
Interesting
The code is directly connected to your complaint the fuel shut off has a problemWith the engine running tell me what the voltage is at the shut down solenoid, then with the key off. Key off it should be zero. If it is the ts says to remove solenoid and inspect for debris if there is then replace if there isn't replace the solenoid
.let me know how you do
Customer: replied 4 months ago.
The voltage seems to be correct
Expert:  go-west.. replied 4 months ago.
Did you remove it?
Customer: replied 4 months ago.
I did remove it and didn't see anything that shouldn't be there
Expert:  go-west.. replied 4 months ago.
Sorry for the delay
Next step is the solenoid itself
Let me know how you do
Customer: replied 4 months ago.
Solenoid fix it
Expert:  go-west.. replied 4 months ago.
Niiice

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