Like the title says, my car is surging between 35-40mph ONLY, and I have no idea why. I did a few things before this started happening and I don't know which could have caused it (if any).
Basically, I redid all but the head gaskets, cleaned out the throttle body, ran some Seafoam spray through the brake booster line (it's back in tight), replaced the PCV valve, replaced all the spark plugs, cleaned the injectors, and replaced the fuel level sending unit.
What I'm thinking it is is that when I was installing the new fuel level sending unit maybe I got some crap into the gas tank and it's clogging up the fuel filter? But it only happens between 35-40mph and around 1300-1400rpm for a few seconds and not at any other speed... It's the strangest thing and I've read about it happening to a few other people through Google and they ended up spending $2k in some cases and didn't get it fixed... Then stopped updating their thread so I don't know if they ever did find out what it was.
Has this happened to anyone else? Anyone have any guesses as to what this might be (please guess something cheap because I'm broke lol)
Basically, I redid all but the head gaskets, cleaned out the throttle body, ran some Seafoam spray through the brake booster line (it's back in tight), replaced the PCV valve, replaced all the spark plugs, cleaned the injectors, and replaced the fuel level sending unit.
What I'm thinking it is is that when I was installing the new fuel level sending unit maybe I got some crap into the gas tank and it's clogging up the fuel filter? But it only happens between 35-40mph and around 1300-1400rpm for a few seconds and not at any other speed... It's the strangest thing and I've read about it happening to a few other people through Google and they ended up spending $2k in some cases and didn't get it fixed... Then stopped updating their thread so I don't know if they ever did find out what it was.
Has this happened to anyone else? Anyone have any guesses as to what this might be (please guess something cheap because I'm broke lol)