|
If you don't have emission testing ditch all of them.
The big one is lambda controller that operates the frequency valve on the lambda fuel head via the oxygen sensor output in the exhaust and nothing else.
The middle one disables the lambda control until the oil temp sensor in the right side chain case warms up. They call it the enrichment relay and the left one is the speed relay that triggers the little lambda system vacuum change over valves for the air pump diverter valves and also delay vacuum retard during cold starts that are part of the emission control system.
It has two small relays inside it and it's also the all at once factory rev limiter that disables the fuel pump relay grounds abruptly shutting off the fuel pumps at 7000 or 7200 rpms.
...another words ditch em or sell em.
The car runs better without them if you do a little fuel mixture and ignition timing adjustment.
|