I was driving my 2001 today, and all of a sudden, when I was accelerating into VTEC, the car was hesitating, and the revs kept jumping down 1000 rpms and then back up, acting like it was bogging, or wanting to die. Then, it was fine as long as I stayed out of Vtec. However, once I got off th highway, it started doing it no matter what RPM I was in. Any ideas what it is wrong?

 

MAP Sensor? https://www.s2ki.com/forums/showthread.php?...?threadid=12605

You may need to search a bit for "MAP Sensor"" to see if it matches your problem.

 

Low oil will also stop vtec from kicking in.

 

Here's a better thread on the MAP sensor if you want to read up: https://www.s2ki.com/forums/showthread.php?...?threadid=44755

 

Let the car warm up first?

 

Ok, just to clarify a bit. Yes, I am letting the car warm up, as I said, I drove on the highway all the way home ( 30 miles ), and it didn't start doing it till I was getting near my exit. The car jerks forward and back a bit but if I accelerate very very mildly, at the pace of a Garbage truck, it doesn't seem to do it much. I took the car out again, and drove around some more, and it drove the first block ok, and got steadily worse, to the point I could hardly accelerate at all. It doesn't seem to do it in 4th ( yet? ). It also doesn't do it often below 3,500 rpms. Does this sound like the map sensor problem??? I'm unsure.

 

send that sucker your honda dealership