5sp gp Posted March 9, 2005 Report Share Posted March 9, 2005 its in a 89 gp with a 5spd. had a code 13 and 44 so i changed the oxygen sensorand erased the codes. this morning while letting it warm up i got code 44 back. what else should i check or test Quote Link to comment Share on other sites More sharing options...
GP1138 Posted March 9, 2005 Report Share Posted March 9, 2005 CODE 44 Trouble Code 44 indicates that the O2 sensor is showing a persistently high exhaust oxygen content (lean), despite the efforts of the ECM to increase injector on-time (thus increasing fuel delivered). Integrator and BLM numbers may indicate > 128 by a substantial margin. Code 44 is set when: * O2 sensor voltage remains below .2 volt for 60 or more seconds * System is operating in "Closed Loop." * No Code 33 or Code 34 Possible causes include: 1. O2 sensor defective or lead shorted 2. Lean injectors (dirty or blocked) 3. Water in fuel 4. Exhaust leaks upstream of O2 sensor 5. Fuel pressure too low Note: Presence of Code(s) 33 and/or 34 may indicate MAP problem. This should be the first suspect in the case of a Code 44 being set See if there's an exhaust leak, or maybe put some STP fuel system cleaner in your gas. Quote Link to comment Share on other sites More sharing options...
5sp gp Posted March 9, 2005 Author Report Share Posted March 9, 2005 is 35psi at idle enough fuel pressure? when you rev it it will go to about 40psi Quote Link to comment Share on other sites More sharing options...
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