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Automotive Repair Car Troubleshooting Topics   Car Troubleshooting   Engine Troubleshooting   Engine Fault Codes   Electrical and Wiring   Transmission Problems Car Repair Topics   Car Making Noises   Car Stereo Repair   Heating or AC Issues   Motorcycles and ATVs   Tricks of the Trade   Truck Repair Advice Site Options:      Login   Sign up here! Latest Forum Post   2011 Dodge Nitro OBD scanner seems to drain battery in 10-20 minutes When I bought this car in summer 2023, a... Grounding Cable, 2017 Jeep Renegade Trailhawk The Cable that connects my negative batt... Rough Idle (Found new thing) Hi everyone. First of all sorry for bad ...     equipment hey yall. im a first year engineering st...   HELP I have a 1956 1/2 ton panel truck, 69 35...   Howdy     Just wanted to s...   ABS/Tractiob/Brake Lights on But No DTCs Hello all, Recently while driving m...   Chevy strut replacement I'm trying to get a sensor of some kind ...   2020 suburban new transmission and issues after install recently had the transmission fail at 11...   Caliper piston post cleaning won't screw in Hello, 2013 Hyundai Elantra limited (ma...

Search Auto Parts Search Car accelerated by itself. MAF problem? Sign up here!   Email This Post Auto Repair Home>> Automotive Repair>> Car Troubleshooting bobtheblack New User Jul 9, 2010, 11:30 PM Post #1 of 6 (1499 views) Car accelerated by itself. MAF problem? Sign In I drive a 1999 Nissan Altima with 105325 miles on it. Earlier today the check engine light came on so I hooked up a diagnostic device to it. It came back saying that the MAF sensor was the problem. I unplugged all the hoses for the air duct system and put them back together. The check engine light came off and the car ran fine for a few hours. Later as I was driving, the car started to speed up and would not stop. I had to put the car into neutral and then turn the ignition to shut it off. Ran a diagnostic on it again and it came back saying that it was the MAF sensor and Knock sensor. Is it possible for the MAF sensor to make my car speed up on its own and how do I fix this? Hammer Time Ultimate Carjunky / Moderator Jul 10, 2010, 5:12 AM Post #2 of 6 (1496 views) Re: Car accelerated by itself. MAF problem? Sign In There is no code that tells you the MAF is bad. The code merely tells you what condition the computer saw. Clear all the codes and start over. When the check engine lights comes back on, read the code and post the code number. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional. bobtheblack New User Jul 10, 2010, 3:28 PM Post #3 of 6 (1493 views) Re: Car accelerated by itself. MAF problem? Sign In The codes I get are P0100 and P0325. Hammer Time Ultimate Carjunky / Moderator Jul 10, 2010, 3:42 PM Post #4 of 6 (1490 views) Re: Car accelerated by itself. MAF problem? Sign In The PO325 is a problem with the knock sensor circuit. On a Nissan, that's usually a bad knock sensor. The PO100 indicates there is a problem with the MAF circuit. This could be the sensor itself but could also be any of the wiring in the circuit or the PCM itself. There is a diagnostic flow chart for that code but all the tests require a professional, bidirectional scan tool. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional. bobtheblack New User Jul 11, 2010, 12:00 AM Post #5 of 6 (1483 views) Re: Car accelerated by itself. MAF problem? Sign In I know that people have had cars kinda stall out and shut down with the MAF circuit problem but is it possible that that was the problem that caused it to speed up? Thanks for the help btw. Hammer Time Ultimate Carjunky / Moderator Jul 11, 2010, 3:55 AM Post #6 of 6 (1481 views) Re: Car accelerated by itself. MAF problem? Sign In Your not going to know until you repair the MAF problem. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.   Email This Post   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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