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NicksSticks
NicksSticks, ASE Certified Technician
Category: Car
Satisfied Customers: 1402
Experience:  Ford Drivetrain and Chassis Master, ASE Master Technician
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2003 ford F350: a 6.0 diesel 4x4 auto trans..goes away..shifter..lite

Customer Question

i have a 2003 ford F350 with a 6.0 diesel 4x4 auto trans I have a bad squeal at 2200rpm it goes away when i let off the petal and now when it was doing the squealing it would do a higher and long squeal and you could fill it in the power. and the shifter lite is on and blinking.
Submitted: 3 years ago.
Category: Car
Expert:  NicksSticks replied 3 years ago.

NicksSticks :

Hi, if the o/d lamp is on and blinking it is a transmission problem. Next with o/d lamp blinking a code will be set, need to have codes checked to further diagnosed correctly.

Customer:

i have a supper chip reader and it shows no codes. so is it back to the dealer.

NicksSticks :

Hi, with a 6.0 you have a torqueshift transmission, so transmission codes are stored in the TCM a seperate module than the computer or pcm. Yes dealer is the best route to take in scanning codes. Problem sounds internal in the trans, especially with the noise. Generic scanners can not scan TCM (transmission control module) codes.

Customer:

The noise sounded like a bearing trying to seaze then letting go. that all started when i was going up hill with a trailer loaded. and when i let out of it it would stop . but only at 2000 to 2500 rpm.

NicksSticks :

Great information. pointing to a transmission internal problem when driving with engine rpm between 2000 and 2500 rpm. Still checking code is very important, this will possibly point to a sensor, such as transmission temp, or a combination with an engine problem under load. Turbo vanes can also cause this noise under a heavy load, so may have two problems. First step is to scan for transmission codes at the tcm, and repair, then check turbo operation using scan tool at dealership. Thanks!

Customer:

ok ill get it to a dealer tomorrow and let you know what they say

NicksSticks :

Great, let me know what they say, along with codes, can still help. Thanks so much and look forward to hearing from you.

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