09-19-04, 04:50 PM
I own a 97 Northstar, 136,000 miles, which is running great. I have just recently had a tune up and keep it serviced well. The Service Engine Soon light is now on 'most of the time'; although it will go out maybe for a day, then back on. The service code is P1645, (evaporative emission (EVAP) Vent solenoid control circuit). Is this a major repair? I am planning a 400 mile trip next week and do not have time for the repair now. Will it cause more damage if I drive with this light on? Thanks for any help. By the way, I am a female senior citizen and only understand plain language!!!