Is there a way to test the lambda relay? I want to be sure I have the proper unit. The car came with a bunch of relays, so I'm sure some/all have been changed.https://uploads.tapatalk-cdn.com/202...89cf91f939.jpg
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Is there a way to test the lambda relay? I want to be sure I have the proper unit. The car came with a bunch of relays, so I'm sure some/all have been changed.https://uploads.tapatalk-cdn.com/202...89cf91f939.jpg
Great info....thanks Dave!
I found two in my spare parts, the part number matches the one you posted. I'll compare and/or swap with the one currently installed.
While looking through parts, I also came across the instructions for a solid state McKeen RPM relay I bought for my first DeLorean (10372.) :-)
BTW, I also found a new Bosch relay: 0332209150. It has a black plastic housing with tab...what is that one for?
The relay is proper and appears to be making good contact. I hear the relay click when I jumper the RPM socket and there's 12 v on one side of the FV plug (ground on the other.) Swapping relays and the FV...no change.
I'm taking a break to replace the accumulator & pull the wheels while I digest what I've learned so far.
I replaced the Lambda ECU; the Frequency Valve buzzes now with the RPM relay jumped, key in the off position.
I swapped back to confirm the ECU is the issue. I also noticed it wasn't necessary to ground the ECU to make the FV buzz.
So far, that's a bad Idle ECU and a bad Lambda ECU on a very clean, well-maintained, 26K mile car.....makes me think there was some sort of an electrical mishap like jumpstarted backwards or something like that.
Tese findings appear to jive with things the PO remembered when the car was running, and could explain why the fuel system didn't appear to be totally trashed.
I've been studying the TM and schematics; it appears I don't have much more to address in the Lambda system, I'll be prepared to replace the O2 sensor if necessary. I'll soon assess with a dwell reading.
Hoping to change the accumulator today, but will be working with 1.5 arms.