Sbelangia Posted December 1, 2004 Share Posted December 1, 2004 I have a 91 Lexus LS400 and recently it started to run bad. It kinda hesitates or stumbles trying to accelerate sometimes. I pulled the instrument cluster and replaced my check engine light bulb where someone had removed it. I'm getting code 24 which is an open or short in the intake air temp sensor circuit. The Air intake is built into the MAF sensor. I know alot of Hondas and Acuras are using the MAF sensor for their engine mods. Does anyone know where I can purchase one besides the Lexus dealer? I dont want to have to pay the 750 dollars or whateer it is. Thanks Quote Link to comment Share on other sites More sharing options...
silvermate Posted December 1, 2004 Share Posted December 1, 2004 they aren't cheap.........i would first try some local salvage yards, or try ebay....here is a list of some online Lexus used/new part sources that have great prices http://www.lexpartsonline.com/ http://www.autonetwork.org/ http://www.taprecycling.net/ http://lexuspartsmall.com/ Quote Link to comment Share on other sites More sharing options...
95LS400Bob Posted December 1, 2004 Share Posted December 1, 2004 Also I noticed some of these outfits that rebuild ECU's also rebuild mass air flow sensors. Another possibility. Quote Link to comment Share on other sites More sharing options...
obergc Posted December 2, 2004 Share Posted December 2, 2004 months ago someone made a post about finding an adjustment screw on the mass airflow sensor and he supposedly just tweaked the adjustment and it supposeldy cured his fail codes and corrected a roung running engine. The adjustment may have been sealed over and not readily apparent. I don't know if it is for real but I would certainly be checking it out before buying a replacement mass airflow sensor. I don't know if a search would find the old post or not, it was made before the rework on the website. Quote Link to comment Share on other sites More sharing options...
zigenfiver Posted February 28, 2005 Share Posted February 28, 2005 I'm having the same problem and I'm trying to get to the bottom of it. My Lexus Dealer quoted $1,067 plus tax for the Mass Air Flow Sensor, I found one at an Auto Salvage yard for $150. You might want to try there or on Ebay. I haven't put it in yet, but I'll let you know the results. Quote Link to comment Share on other sites More sharing options...
Econ Posted February 28, 2005 Share Posted February 28, 2005 You -can- test the air temp sensor before replacing the whole MAF. Turn the ignition switch to "On". Disconnect the sensor harness and test the resistance between the two prongs on the farthest right (the slot that guides the sensor harnes in should be at the top). Depending on the outside air temp, you should see resistance in the 1-3 kilo-ohm range (is that the right way to spell it?). Jacksonville is at 68F right now per weather.com, so you should see resistance of 2 kOhms at that temp. As the temp falls, the resistance will rise. It should be 3 kOhms at 32F. Quote Link to comment Share on other sites More sharing options...
zigenfiver Posted March 10, 2005 Share Posted March 10, 2005 I recently bought one at a salvage yard, but I didn't need it. Check it out on Ebay under Air Intake/Fuel delivery. Quote Link to comment Share on other sites More sharing options...
Sbelangia Posted March 11, 2005 Author Share Posted March 11, 2005 So I caught one of ebay for $76 if you can believe that and now im getting a EGR system code but it runs a lot better.... I wasn't goig to get the Ebay one because recently Autozone and Advanced Auto Parts are carrying remanufactured ones. They are $300 dollars--- still alot but not as much as the dealer.... Thanks for the help and info guys Quote Link to comment Share on other sites More sharing options...
gremio Posted March 15, 2005 Share Posted March 15, 2005 Link to the adjustment screw hidden under an aluminum plug on the front side of the unit: http://us.lexusownersclub.com/forums/index...wtopic=4518&hl= Quote Link to comment Share on other sites More sharing options...
gremio Posted March 15, 2005 Share Posted March 15, 2005 months ago someone made a post about finding an adjustment screw on the mass airflow sensor and he supposedly just tweaked the adjustment and it supposeldy cured his fail codes and corrected a roung running engine. The adjustment may have been sealed over and not readily apparent. I don't know if it is for real but I would certainly be checking it out before buying a replacement mass airflow sensor. I don't know if a search would find the old post or not, it was made before the rework on the website. ← http://us.lexusownersclub.com/forums/index...wtopic=4518&hl= Quote Link to comment Share on other sites More sharing options...
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