Steve2150 Posted August 8, 2016 Share Posted August 8, 2016 It all started when I went to pass a car, floored the gas, trans did not kick down and it moved forward sluggish like it flooded. The service engine light came on and started smelling unburned fuel. Went to my mechanic he tried scanning it and found half of the ecm not working so would not scan. He replaced the ecm using my original proms, also the water pump was leaking and he replaced that. He scanned after the repairs and still got E041, it showed cam sensor, crank sensor, both oxygen sensors, scanned again still showing E041, car runs a-okay. Lately first start of day requires numerous cranks, only started after 8th crank with finally putting my foot on accellerator like when carbeurated car flooded. Link to comment Share on other sites More sharing options...
padgett Posted August 8, 2016 Share Posted August 8, 2016 (edited) Sounds like more than a code 41 problem. Will usually run fine like that. They did away with the cam sensor a few years later. I'd check the fuel rail pressure, may have a bad regulator. What do you mean "both oxygen sensors" ? Reattas only have one. Edited August 8, 2016 by padgett (see edit history) Link to comment Share on other sites More sharing options...
Steve2150 Posted August 8, 2016 Author Share Posted August 8, 2016 Showed me both he took out, one behind the engine and one under the car Link to comment Share on other sites More sharing options...
padgett Posted August 9, 2016 Share Posted August 9, 2016 Is this a Reatta ? If so does it have the original engine ? Link to comment Share on other sites More sharing options...
Steve2150 Posted August 9, 2016 Author Share Posted August 9, 2016 1990 original motor Link to comment Share on other sites More sharing options...
Machiner 55 Posted August 9, 2016 Share Posted August 9, 2016 Steve, We need pictures of both Oxy. Sensor locations to properly help with diagnosis. John F. Link to comment Share on other sites More sharing options...
ChrisWhewell Posted August 9, 2016 Share Posted August 9, 2016 Do our Reattas use a vacuum signal in any way connected with a downshift when you stomp on the gas ? Link to comment Share on other sites More sharing options...
2seater Posted August 9, 2016 Share Posted August 9, 2016 Pretty certain the TV cable controls the downshift and the vacuum modulator controls line pressure and shift firmness. I agree that fuel pressure and regulator should be checked as well as vacuum leaks. The little brother to the 3800, the 3300 used in the early 90's, did not have a cam sensor and used a batch fire injector system. They ran fine as well as returned good mileage. Something is amiss if there are indeed two O2 sensors? Maybe a second used to plug a hole in an aftermarket cat? Shouldn't be there, at least operationally. Link to comment Share on other sites More sharing options...
Steve2150 Posted August 9, 2016 Author Share Posted August 9, 2016 Was not a 2nd oxygen sensor I mistook him it was a part that works with the sensor under the car. With the new cam sensor, crank sensor, oxygen sensor car runs more smoothly but drinks more gas then before, E041 still there, he is gonna do the electric testing this week. Link to comment Share on other sites More sharing options...
2seater Posted August 9, 2016 Share Posted August 9, 2016 Do you know how to use the built in diagnostics? You could perhaps find a clue in the readings from the various sensors while running. Do you actually have a before and after mileage readings to determine the fuel usage? Do you know where the fuel pressure regulator is? If so, check the vacuum line to see if the diaphragm is ruptured and it is pulling fuel through the vacuum port. Link to comment Share on other sites More sharing options...
ChrisWhewell Posted August 10, 2016 Share Posted August 10, 2016 Maybe the rheostat in the TPS has a worn spot at the end of its travel , so when you stomp on it, the ECM is getting a spurious signal ? Link to comment Share on other sites More sharing options...
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