I just installed a new Optispark, however, the car still hesitates when I try to maintain a steady speed. The car will not hestitate when I accelerate, just when I stop completely and like I mentioned earlier, when I try to keep a steady speed. I changed spark plugs and have drove it around for a couple of days. What gives?? The SES light is not on so I don't know if a diagnostic scan will help. What should I do??? ANY suggestions would be helpful.

 

I drove it around for another couple of days and still the same!!! The only other thing I forgot to mention is that although I changed spark plugs, I did not change spark plug wires. Maybe that is it??? I DON'T KNOW!! HELP PLEASE with any advice

 

I have the same problem. Feedback please. I'm going to try a diagnostic tester. but no engine light is present. I notice my hesitation most on the highway at steady speed about every 5 seconds or so.

 

Maybe a sticking or leaky EGR valve or some vacuum leak? Still, if it is like a miss, you may need plug wires.

 

i vote EGR as well.... I was gonna say that, but Rob beat me too it

 

It actually was the EGR valve.

 

Its always good to post the outcome. A lot of members don't come back to say that they have fixed it. That is a good habit that I hope you keep

It helps other members when they go to search for a solution