- Brand: BD Diesel Performance
- Item Dimensions LxWxH: 2.1 x 4.6 x 4 inches
- Mounting Type: Panel Mount
- Unit Count: 1 Count
- Number of Items: 1
- Package Dimensions : 4.597 L x 15.011 H x 11.811 W (cm)
- Made in Canada
- Package Weight : 0.5 lbs
- Product type :BOLTS







Paul Wagner –
This noise isolator definitely does the job, but I’d recommend another method to attach this to the appropriate wire out of your PCM. I installed per the directions, drove the truck, and was mortified when the torque converter stopped engaging entirely.I called BD Diesel for support. The guy a spoke with wasn’t especially friendly and dismissed the issue, but someone in the background heard our discussion and said that yes, the tap has been known to split the wire.I removed the tap, stripped the wires, and attached them with a twist on wire connector. I wrapped this well using electrical tape, and voila…the torque converter works like a charm. No more cycling at cruise speeds.Now a final consideration: I’d read that this only covers up more significant problems, particularly with your alternator. I went ahead and replaced my alternator at the same time. It’s an easy job on our 5.9s, taking less than 45 minutes (could have been 15 if I’d known how to properly place leverage on the tensioner pulley). So I’d recommend starting there before you install this noise isolator. A new alternator can be had for less than $100. I figured that having both the new alternator and noise isolator was really covering my bases.In any case, toss the tap. Splice the wires and do it properly. It will save you a lot of potential headache.
Jay –
Was having shifting issues on a 2001 Dodge 3500 automatic around 40 – 45 mph, would kind of slip and hesitate into gear, part was delivered to me in couple days. What a difference, shifts like new!!Easy instructions, took the advise of reviews , watched videos and decided to solder and hard wire to PCM wire rather than use the supplied connector, avoid slicing the wire completely as others have stated. Voided any warranty there was on this product but will take the chance as an experienced engineer. The supplied connector has a needle that punctures the wire to grab contact, may work for others I don’t know. I personally would rather leave PCM wire alone and expose the wire with wire strippers. Just applied solder and attached the new wire. Better current flow and if ever broke off the original PCM wire is still intact and cannot separate or malfunction. Worked for me, shift points between gears are more precise, slight increase in mpg! Definitely recommend before calling a transmission shop $$
Kole Piper –
This product worked to help reduce the 3-4 gear hunt but rerouting the ground wire out of the wire loom that runs across the alternator and wrapping in tinfoil eliminated my issue completely
Jesse Ballard –
I have an automatic 2001 Dodge Ram 2500 with the 24 valve 5.9 Cummins. My truck has had the torque converter lock up issue since I bought it. Going through town and cruising between about 35-45 mph my torque converter would lock and unlock constantly. Found out about this product several months ago and have been going back and forth on purchasing it since then. I upgraded all my ground cables and checked the throttle cable adjustment and the problem still persisted. Turning overdrive off while cruising at low speeds only barely helped. I’m not going to go into all the details on ac interference from the alternator on these trucks in this review, research it yourself. Long story short, bought the isolater, installed in about 5 minutes, and the lock up issue is completely gone. Don’t be like me and wish you had purchased this sooner, just do it.
Sean –
I had been having issues on my Cummins, shift in/out of torque converter lock-up for about six months now. With my busy schedule, I couldn’t get on the vehicle to oscilloscope the patterns of the transmission solenoids. This was an inexpensive “shotgun” diagnosis that worked perfectly. Took ten minutes to install, haven’t had an issue since. If you’re having the infamous surge feel from your transmission, I strongly recommend this inexpensive piece as a starting point.
Angela Gardner –
So far so good….it has fixed the problem with our 1999 dodge diesel….
Travis Hooper –
I went through 8 months of torque converter locking and unlocking when it wasn’t supposed to. Everyone says check your grounds first, then install this… just go straight to installing this. It’s ridiculously easy, only $30, and will save you the trouble when your truck starts doing the same thing. My truck shifted flawlessly when I bought it, 14 months and 30k miles later, I started having the TC lock/unlock issue, bad at first, then went away, then back again, then finally installed this and it’s back to normal.
Bea –
Thanks