It is a 6-digit number assigned by MasterCard to each acquirer. If a merchant has different acquirers for Authorization versus Settlement, the merchant will have a separate ICA for each one. SIGIS is only collecting the Authorization Acquirer ICA at this time.
Sometimes a shake or shudder will emanate from the engine compartment, because the engine isn't getting enough air, fuel or spark that it needs to run smoothly. Symptoms that might indicate such an engine-related case of the shakes include the following: 1  Shudder or jerking occurs during acceleration. 2  Staccato shaking, as if over a highway rumble strip, within a specific speed range. 3  Car starts and drives fine for a while, but later begins to shake.
If temperature cycling is the root cause, one would expect other relays in the car to have this problem as well but only the fuel pump relay has it. Don't know how the relay is mounted in your car but I think the mounting method used in the 92 Civic greatly contributes to mechanical shaking of the relay. The relay is bolted on the far end of a stick-like metal bracket like a baby's rattle and gets shaken like one under normal driving conditions.