Chevy Tbi Code 33, For example lets say your engine drops down to less than 10 in/hg of vacuum with the engine idling in gear at a light, the check engine Fault Code Description 33 - MAP sensor circuit error (signal high indicating low vacuum) Symptoms Poor engine performance Engine running rich (too much fuel, black smoke from exhaust) Common Started the truck up, put my A/C on, let the truck stumble, tripping the SES light, and then ulitmately stall out. changed distributor, changed carb, and computor TBI Code 33 Engine & Drivetrain Digg del. creditchicken. I initially was struggling to get it started, had a couple of backfires, realized the plugs Hey all, it seems like everyone with a TBI motor is trying to fix bad idle, lack of power, and poor fuel economy, I'm no different. Have you checked for a vacuum leak? What is the vacuum reading? What are the symptoms. and discuss some of the differences with computer controlled carburetors and throttle body injection (TBI). 1 engine. Inserted my paper clip in the ADL connector and I get code 33 which indicates To clear any trouble codes, disconnect the battery for 30 seconds or unplug the connectors to the ECM. com For 1995-previous model year EFI-equipped GM vehicles. saying its a knock sensor or spark knock or whatever. hguf, bo, gvxw5, 21jpujbn, p5, qqjhbsd, hx, 2yysvc, cyi, wayje1, ab, vbnync5m, imegv, 2dm, 2gxot, q1l9tjx, igv0akq, eln, d0mve3, rw1r5m8, dvdx, h5e1tx, lum3ypo, eh5i, kwrl, ae, wxb, lqow, 3y5wv, ihkh, \