In a 1993 Honda Prelude, a blinking D4 light typically indicates a transmission issue, often related to the Vehicle Speed Sensor (VSS) or the Transmission Control Module (TCM). The VSS monitors the speed of the vehicle and sends this information to the TCM, which can cause shifting problems if faulty. It's advisable to check these components and their connections, as well as perform a diagnostic scan for any trouble codes to pinpoint the exact issue.
poor gas mileage
Coil, distributor, bad wire.
The Speed Sensor is located on the transmission twoards the back, you can identify it by the two vacuum lines running to it from the frame area.
bad ignition coil, bad plugs. bad plug wires, bad ignition control module........
Buy a syphon hose at hardware store or Wal-Mart
it's code 6 blinking out twice. and it's temperature sensor. usually meaning it came unhooked. sometimes bad. about $12 at part store. it's on the side of the head.
it could have a bad speed sensor
When the oxygen sensor goes bad, the check engine light goes on.
Hey E==The running lights have a module which may be bad. Good luckJoe
That means that your alternator is bad and the oil light can indicate something about you oil level or oil pressure
Either the coil is bad or the ignition control module is bad.I would think the coil is faulty.
no. a bad o2 sensor will cause more fuel consumption, check engine light, etc it has nothing to do with shifting