3.8 engine surge
#1
3.8 engine surge
I have a 97 mustang with the 3.8 engine. What might be the cause of the engine feeling like it surging as I am driving it. The plugs are autolight iridium which are about a year old. The wires are about two years old. I do not hear any missing when I listen to the exhaust to indicate a misfire nor is it showing up on my carchip insert as a code which it normally does if a plug is missing. No engine light light showing. The engine has about 198000 miles on it and the engine has never gone thru an injector cleaning. I changed the gas filter which made no difference. The gas tank just had the donut seal changed on the filler neck. When I let the engine just idle I can see a slight intermitant flicker in the tach needle. Any ideas of what might be the cause?
Last edited by GARY247; 09-14-2011 at 12:12 PM.
#5
Yep...I sure did! I think I might have it figured out though. I totally forgot that the a/c compressor kicks in when using the defrost mode. This could be causing an electrical drain which could be causing the surging. I'll know more when I can get the hood up later today.
Thanks
Thanks
Thread
Thread Starter
Forum
Replies
Last Post