Can the ECU Engine Control Unit on 1987 Honda Prelude have only one defect and the car continue to operate?
Is it possible for the ECU to have a single defect with the car
continuing to operate? POSSIBLE? Yes. PROBABLE No. The actual
defect rate for vehicle onboard computers is EXTREMELY RARE. If a
mechanic is telling you this, run the other way. However, a sensor
that sends the computer its data can be defective; or, defective
only at times, working OK at other times. Get another evaluation
and DO NOT SAY ANYTHING ABOUT THE FIRST DIAGNOSIS. Don't help them
in any way. Let them analyze the problem without input from you.
DON'T KEEP ANY PAPERWORK FROM OTHER EVALUATIONS IN YOUR GLOVE
COMPARTMENT. THAT'S ONE OF THE PLACES THEY LOOK TO SEE IF YOU WENT
TO ANOTHER SHOP. THEY KNOW A HIGH-COST REPAIR WILL SEND YOU TO THEM
-- AND THEY KNOW YOU ARE FAR MORE LIKELY TO SPEND YOUR MONEY AT THE
LAST PLACE YOU ARE AT, RATHER THAN TAKE YOUR CAR BACK TO THE FIRST