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cumminsdr
cumminsdr, Mechanic
Category: Medium and Heavy Trucks
Satisfied Customers: 3541
Experience:  All types of Cummins applications
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I have a 2001 isx engine that have the following faults

Customer Question

Hello I have a 2001 isx engine that have the following faults 121 and 731. I already replaced the crankshaft sensor but the truck still loosing power and smoking white time to time...not always...looking for pratical solution for this issue.
Tks
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  cumminsdr replied 1 year ago.
Hello and welcome to Just Answer! I would be more than happy to assist you today.What is the engine serial number and has there been any overhead work preformed recently like cam removal or gear train repair?
Customer: replied 1 year ago.
I dont have serial number right know but I believe that is K19333 and no never touched engine...just replaced the clutch disk a few months ago...sorry my about english im a portuguese living in mozambique
Expert:  cumminsdr replied 1 year ago.
ok the serial number will be on the engine data tag located on the valve cover or ecm data tag. and it is 8 digits long starting with either a 1 or a 7
Customer: replied 1 year ago.
The number i sent you is the last 6 digits that we use to buy spares
Expert:  cumminsdr replied 1 year ago.
That may be the VIN, I would need the entire VIN number or 8 Digit engine serial number. Not all ISX's are the same and this will also expidite this service. with the proper info. I don't guess the failure, I provide accurate troubleshooting information to repair
Customer: replied 1 year ago.
I will send to you as soon I get it. Thank you
Expert:  cumminsdr replied 1 year ago.
Great , just reply to this post and I will respond
Customer: replied 1 year ago.
1fujbbcg25lu96372
Customer: replied 1 year ago.
Right now I have the chassis number 1fujbbcg25lu96372. It is ok for you?
Customer: replied 1 year ago.
Im so sorry this number elongs to my detroit engine...will get back soon...
Customer: replied 1 year ago.
HiChassis number 1fuja613g12lk19333
Engine 14027542
Expert:  cumminsdr replied 1 year ago.
ok i'll look
Expert:  cumminsdr replied 1 year ago.
Do you have the old crank sensor? Id so swap it with the cam sensor. These sensors are the same. let me know
Customer: replied 1 year ago.
Ok. As soon I swap it I will let you know.
Expert:  cumminsdr replied 1 year ago.
ok thanks
Expert:  cumminsdr replied 1 year ago.
Hello just following up. Do you need more assistance?Please don't forget to rate my service
Expert:  cumminsdr replied 1 year ago.
Please don't forget to rate my service