The speedo or the speedo cable might be broken and, or be dissconncted.
1993 The H22 debuted in the U.S. in 1993 as the H22A1 for use in the Honda Prelude VTEC.
A 1994 Honda Prelude S would not have a VTEC engine in it (assuming it has the original engine in it). It should have the F22A1 in it which is SOHC and Non-VTEC.
The 1994 Honda Prelude is best run with 91 octane fuel or higher. The vehicle is designed for use with high octane fuel.
the best swap would be a JDM vtec 2.2 liter. you can get a 2.2 liter vtec out of something like a 2001 Honda prelude but you would have to do the wiring harness
they would fit but your car would run rich because the 90 prelude is a 2.0 the other one is a 2.2 or a 2.3
$100,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000
vacuum leak
pcv valve replace every 30000 miles.. bad oil pan gasket, or valve cover gasket
Coil, distributor, bad wire.
Yes.
I just went through that exact problem with my 88 prelude, it was the ignition cylinder.
i wouldn't swap it, the 87 is carbureated and the prelude is fuel injected, just put the same engine in. the 87 accord engine has less hp .