442 is not even supposed to come up as it is not "implemented" for the Lotus. Any ECU from 1998 through 2004 will work but you want it to have the HTU upgrade. The ECU is the LAST thing you consider, so, before getting another one you must check and check again to be sure. You do NOT want to buy an ECU, stick it in and still have the same problems. Repair, as posted, is another option. It is a GM ECU and there are places that do repair them. Just don't let them "flash" it. If you are getting evap system errors try to check out the whole evap system. There could be a problem in that system and it is causing an error that is not exactly the problem but it is all the ECU can say it is. Sometimes you have to interpolate the codes, especially if the error is not exactly what the system was designed to see. Clear out all of the codes and see what the first one to pop up is. if you have a Tech 1 you can activate and test each of the evap system valves. If the shop you are at doesn't have a Tech 1 take the car to a shop that does before you buy an ECU. Is there any evidence that the ECU got wet or hot? Rare for them to fail, especially that way, so I would be very suspicious of an ECU failure. A while back another member of this forum had a problem with his ECU. Turned out it wasn't a Lotus ECU. Make sure it has labels that it is a Lotus part. The wiring is a common source of problems. Check for a damaged wiring harness, a bent or backed out pin, etc.
Last edited by jtrealty; 05-28-2019 at 05:26 PM.