[Sak123]

Help! I have a 1990 Prelude SR (same as the Si in the US market but mine was built for Canada).
Automatic transmission, with the B21A1 engine. I am the second owner and have just put over 7k in parts into this vehicle but am at a standstill. Here is the issue. Speedo and odometer haven't worked for years which is fine. Recently fixed a hard-start problem by replacing the coolant temp sensor and replacing plugs and wires. Car now starts fine, but is undriveable due to power loss. Here is the sequence:

• car starts fine
• runs fine for 2-3 min, then the S3 shift indicator starts to flash
• 2-3 min later, the engine reaches operating temp
• then, as I am driving comfortably at 70 KPH and 2000 RMP the power starts to slowly drop: loss of power and revs
• pushing slowly on the gas pedal does nothing: it's as if the pedal is no longer connected to the throttle
• pumping on the gas will keep the car lurching along
• flooring the gas pedal will (almost) redline the tach, and the car will grab 2'nd gear for a few seconds, then lose poser again

As stated, car has new wiring and plugs, and fuel filter was also cleaned
Also, the tech used a camera to look behind the instrument cluster (which I replaced a few years ago), and stated that there is a big scratch across the circuit board.

WHERE DO I GO FROM HERE?

• Replace the cluster?
• VSS?
• MAP sensor?
• plugged cat convertor?

Please help. I LOVE this car and need to get it running again.
Thanks in advance for any/all advice you can provide.