1997 Honda Civic Speedo and Check Engine

What you need to do is have the computer scanned for codes. If the light has come on, there should be a trouble code stored in the computer. Most parts stores will do it for free. Have that done and let me know what you find so I can better help. Also, did all other sensors plug and go? Was the VSS reconnected correctly or could it be loose? Allso, check for vacuum leaks.

Let me know what you find.

Joe

Check for codes since you have check engine light on codes must point to troubled area
recheck and make sure all connectors and wiring are in order and plugged in

Need to have the codes as that will help in pin pointing the troubled area and the diagnose to the problem

This what I have on flash code17
DTC P0500 & P0501: VEHICLE SPEED SENSOR (VSS) MALFUNCTION
D16Y5 M/T
Test drive vehicle. Using scan tool, check vehicle speed. If correct speed is not indicated, go to next step. If correct speed is indicated, problem is intermittent. System is okay at this time. Check for poor connections or loose wires at VSS and PCM connectors. See appropriate wiring diagram in WIRING DIAGRAMS article. Repair as necessary.
Turn ignition off. Block rear wheels and set parking brake. Raise and support front of vehicle. Turn ignition on. Block right front wheel and slowly rotate left front wheel by hand. Using backprobe set, measure voltage between PCM 32-pin connector "A" terminal No. 9 (Brown/Black wire) and PCM 31-pin connector "C" terminal No. 18 (Blue/White wire). See Fig.
If voltage does not pulse between zero and 5 volts, go to next step. If voltage pulses between zero and 5 volts, substitute a known-good PCM and recheck. If symptom or indication goes away, replace original PCM.
Turn ignition off. Disconnect PCM 31-pin connector "C". Turn ignition on. Block right front wheel and slowly rotate left front wheel by hand. Using backprobe set, measure voltage between PCM 32-pin connector "A" terminal No. 9 (Brown/Black wire) and PCM 31-pin harness connector "C" terminal No. 18 (Blue/White wire). If voltage pulses between zero and 5 volts, substitute a known-good PCM and recheck. If symptom or indication goes away, replace original PCM. If voltage does not pulse between zero and 5 volts, check for short in Blue/White wire between PCM, TCM and VSS. Also check for open in Blue/White wire between PCM and VSS. See appropriate wiring diagram in WIRING DIAGRAMS article. If wire is okay, check VSS.