# ECU diagnostics? **URL:** \ **Category:** General Discussion\ **Created:** [January 31, 2025, 9:46pm UTC](https://community.cartalk.com/t/ecu-diagnostics/198925 "2025-01-31T21:46:09Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\ **Post date:** [January 31, 2025, 9:46pm UTC](https://community.cartalk.com/t/ecu-diagnostics/198925/1 "2025-01-31T21:46:09Z")
Just curious if any of you folk have ever had what seemed to be an ECU /PCM/ABS problem and attempted to get it repaired by mailing it to a vendor who does that? If so, did the module repair do the job on the first go? Or was a repair not possible, so you were given a rebuilt unit from another vehicle that worked? Or did they say they couldn’t find anything wrong with the one you sent them? ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [January 31, 2025, 11:59pm UTC](https://community.cartalk.com/t/ecu-diagnostics/198925/2 "2025-01-31T23:59:03Z")
I dropped off the instrument cluster from my 84 Corvette for a nuisance drain at a local rebuilder. This shop did repairs from across the USA. They fixed my cluster for $350… a new one would have been $2000 plus. No mail order was needed since the shop was local. ---
**Author:** ![oldnotdeadyet](https://avatars.discourse-cdn.com/v4/letter/o/a6a055/32.png) [@oldnotdeadyet](https://community.cartalk.com/u/oldnotdeadyet)\ **Post date:** [February 1, 2025, 12:06am UTC](https://community.cartalk.com/t/ecu-diagnostics/198925/3 "2025-02-01T00:06:26Z")
I had the ECU go out abruptly on my 1996 Miata. These ECU’s were known for capacitors that failed. The ECU was sent to a Florida facility found on eBay. It worked perfectly on return. ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [February 1, 2025, 12:15am UTC](https://community.cartalk.com/t/ecu-diagnostics/198925/4 "2025-02-01T00:15:58Z")
A buddy got his Mini ECU fixed mail order. $2500 for a new one… BMW parts pricing… and $500 repaired. The museum I volunteer for needed an ECU for a McLaren F1. $6700 repaired. They likely would have had to use an aftermarket ECU that would likely have cost $30 or $40 thousand to install and tune. The car is worth $22 million, so well worth the fix. ---
**Author:** ![bcohen2010](https://avatars.discourse-cdn.com/v4/letter/b/779978/32.png) [@bcohen2010](https://community.cartalk.com/u/bcohen2010)\ **Post date:** [February 1, 2025, 4:49pm UTC](https://community.cartalk.com/t/ecu-diagnostics/198925/5 "2025-02-01T16:49:28Z")
Yes. My 2000 Chevrolet Silverado had a persistent ABS and BRAKE warning light as long as I owned it. When I had the suspension rebuilt, the mechanic sent the ABS module to a local company which repaired it, so now the ABS works and the warning lights are off. ---
**Author:** ![db4690](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/db4690/32/2583_2.png) [@db4690](https://community.cartalk.com/u/db4690)\ **Post date:** [February 1, 2025, 4:58pm UTC](https://community.cartalk.com/t/ecu-diagnostics/198925/6 "2025-02-01T16:58:02Z")
Yes, and I mentioned it a few months ago I drove my sister-in-law’s automatic transmission control module to a local business that specializes in such things It was a complete success and the amount charged was very reasonable, imo I went out of my way to find a local shop, to avoid s/h costs and ensure a quick turnaround