ECU diagnostics?

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?

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.

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.

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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.

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.

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