Car dies when maf plugged in. when i unplug the sensor it runs fine other than my.

Car dies when maf plugged in Leave maf plugged in, unplug o2 sensor, see if Jun 18, 2008 · I suspected the MAF (Mass Air Flow Sensor) so removed it and cleaned it with CRC mass air flow sensor cleaner. Feb 1, 2009 · Hi guys, got a little problem I could use some input on. Starts and idles if I unplug the sensor, or I can leave sensor plugged in, but disconnect air intake hose from throttle body, and it'll start and idle. still no luck - when i plug the maf in the car stalls out. Start the car (it wont idle), you will have to hold the trottle open a little for it to idle. Once you figure out how to do that, rev it up. Unplugged maf (works) Things I might try: 1. I then tried cleaning the MAF thoroughly and plugging it back in, but it still ran like shit and instantly died. If your car’s engine runs rough or stalls, it could be a MAF sensor issue. Check for codes to see if there are obvious faults. Load at 0. Appears to be working correctly. Apr 21, 2017 · You have the induction system messed up. So for the hell of it I unplugged the MAF and it ran. I hit the junk yard, found a MAF sensor. Unplug MAS and it dies fast, does not even try to keep running, just dies. the stalling gets worse and giving gas doesn't help anymore and it keeps dying. That is what I expected it to do at idle with MAS unplugged. ---Codes thrown: misfire, and coolant thermostat jammed open 4. If you go buy a NEW meter now, you are gambling sometimes you win, sometimes you lose. It will instantly die if the maf sensor is connected. Unplug the maf starts and idles but won't rev up. PROBLEM NOT SOLVED; during this tinkering, notice that when MAF is unplugged, car idles steady. I plugged it back in and the car immediately stalled. After reinstalling the MAF, the car would instantly die after starting! I disconnected the MAF and the car started and ran fine! I did some test driving and it no longer died during stops any more. - '94 ranger xlt s/cab 4x4 auto; starts great dies in seconds. Fuel pump running when you turn the key. but runs fine with it off and i tried revving it past 2500 with maf on and i get nothing but white smoke so my headgasket is probably cooked too. Idle surged a very slight bit (less than the typical ~500 RPM surge it has) and it steadied out. I actually have two one is with the cold air tuning and one is without. My car has an automatic transmission. It idles low and doesn't run well but it runs. Is this normal? No codes were thrown when I unplugged MAS or MDP sensors. I fixed my car from the last post I made but a new and similar problem came up. Replace air filters as recommended by the manufacturer. . Put new sensor on it, didn't change a thing. The engine will run but not smoothly or efficiently. Oct 14, 2018 · I had an idea and unplugged hte maf and the car ran and I was able to bring it home. Unplugging the MAF will cause the engine to run on a Richer fuel Map that will mask lean conditions. Use MAF-specific cleaner to avoid damaging the sensor. This is a sure sign of a shorted mass Jan 13, 2022 · At this stage, I am trying to figure out if the MAF needs to be replaced since P0101 is confirmed. If I plug it in it will start then stall. plugs, wires, fuel pump and fuel filter all newer or new. I suspected immobilizer and performed the lock and unlock with the key remote 5 times with no effect. This is with either MAF meter. I then suspected the MAF and unplugged it and it would star and run reliably. So basically I tried unplugging my MAF (Mass Air Flow sensor) and it ran much better, so naturally I thought I found the cause of my problems. The check valve on the rear of the intake position will not impact the idle, it will impact the SAP system operation. If you unplug the MAF then the ECU bypasses all the other sensor data and goes into "limp home" mode. Mar 11, 2002 · Try to barrow one from a car that runs good and see if that cures it. I purchased a replacement MAF and installed and found it still stalled with MAF plugged in. Aug 4, 2011 · 1983 - 2012 Ranger & B-Series - stalls with maf plugged in - 92 ranger 3. Apr 27, 2009 · I ran the diagnostics with my code reader. Jump to Latest 7. 4l. Not the best but it ran. Cleaned the maf 2. Inspected and clean Adjuster Unit. Firstly, there is a possibility of damaging the MAF sensor itself. I did the unplug test, and when unplugging the MAF engine keeps running which is fine, but when re-plug it, the engine immediately dies. For the special MAF Cleaner. Does this mean bad MAF? I have attached the complete reading of OBD2. Sep 21, 2009 · What have you done to your car to have a MAFia installed. It stalls and I can smell unburnt fuel in the exhaust. I did it 3 times. I have one installed used as an extention for MAF. I bought a used K&N air intake for my 2004 f150 5. Prior to relocating my MAF I needed MAFia because my MAF was maxing out during dyno run around 5000rpm. If it stalls when you plug it in, what does that have to do with the o2 sensor? Jun 12, 2023 · To ensure your car’s MAF sensor functions well, regularly check and clean it. If you try to plug it in while it's running the car will die. Did nothing to change the stalling issue, truck was not drivable. Starts then stalls. Start by pulling the codes. It ran the same, if not better than before. Perhaps a hose isn't connected. that stuff is basically Brake Cleaner. If I give it gas it will try to run but misses badly. fuel pressure is good,ignition module is good,and has new cap, roto,r and wires. If you plug it in and the engine stalls then there is air entering the engine that the MAF isn't metering. The delicate components of the sensor can be susceptible to voltage spikes when unplugged under load, potentially leading to permanent damage. Jul 3, 2017 · I had the car running, it was warm since I had been driving it, and I disconnected the MAF. May 30, 2018 · Keep the MAF you took off the car for now, it is probably good. CEL came on, of course, but it was running and revving fine. as soon as I touch the throttle, i get a load of 250 and she runs rough stalls as soon as I let go of the throttle. Jun 30, 2019 · My truck won't run if the maf sensor is plugged in. If I give it a good rev then it will idle. Plug MAF in and car chugs and glugs. i have looked all over for vacuum Mar 22, 2017 · The MAF measures air entering the engine and uses those numbers to decide on how much fuel to add during open loop. Car will run okay with MAF Sensor plugged in but outside of air intake, but truck dies when I insert it back into the slot in the intake It won’t let me edit the title at the moment to clarify that the car runs okay with the MAF plugged in outside of the air intake only with the hood open. Aug 19, 2017 · The car runs the same way with the origial MAF sensor. My car has 90000 miles. Apr 8, 2009 · I have 24# injectors in the car with a new Pro-M 75mm plastic meter calibrated for 24# injectors. The MAF meters the air going into the engine. And it had MAF codes 157 and 158. Replaced the sensor and the problem persists. when i unplug the sensor it runs fine other than my Nov 11, 2012 · Okay so, my car starts with the maf unplugged and runs. Started car and runs. 0 runs rough without the mass air flow sensor plugged in. Dec 29, 2024 · Car runs fine when i drive it away. Sep 24, 2020 · So after basically trying everything else - inducing a vacuum leak and soldering up wires to go into IACV . Dec 7, 2008 · Why would the car run fine when the MAF is unplugged, but sputter and die when it is plugged in? I'm gonna have to go with your MAF is effed. have tried 2 sensors 1 is new,one is used. Oct 17, 2016 · Q: If you unplug the mass air flow sensor the car will start. Now however it still won't run with the maf plugged in. When you reach operating temperature, the ECM switches to the O2 sensor readings, which give better control because the computer can analyze how the engine is actually using fuel and can alter fuel trims to optimize drivability and efficiency. This prevents debris from reaching the sensor. Replaced ICV valve; cleaned MAF with MAF cleaner (no q-tips, only spray). As soon as I plug the maf in it sputters and then eventually turns off. The described condition does NOT absolutely mean the MAF is the failed component. 95 f150 5. Load value is high. Sep 4, 2013 · Maintenance Shop - wont run with maf plugged in, in need of help!!! - hey guys ive got a problem i cant figure out. No obvious signs of leaks or disconnected hoses, what do you guys think? Things I've tried: 1. Searched all over and found a thread in the New Beetle forums that power for MAF was coming from fuse 43 for engine control. 5. Original maf, 1 known to be working used maf and a brand new one - same thing. msg4000662#msg4000662 date=1303398029] try applying some brake or carburetor cleaner on the MAF sensor and install it back in, and see if it makes a difference at all. Mar 24, 2015 · When car won't run with MAF plugged in, I checked for power on blue/yellow wire MAF and had none with ignition on. when my mass air flow sensor is plugged in the truck will start but idle rough until it dies. Chances are there is a vacuum leak you missed. The car will start and idle with the MAF sensor unplugged, but the second you plug it in the car dies. When to Consult a Professional. Tuner installed MAFia on 4 setting tuned car right up to red line. Apr 21, 2011 · [quote author=dtravman link=topic=189617. Naturally, I thought the maf was bad, but when I swapped the maf (with a known good one) I have the same problem. I next had the lower intake boot Customer: My car stalls with the MAF plugged in Mechanic's Assistant: Is the check engine light on? Does the car stall at idle or when driving? Customer: as soon as i turn it on Mechanic's Assistant: What is the model/year of your Lexus? Customer: 1993 Lexus Sc400 Mechanic's Assistant: Are you fixing your vehicle yourself? What have you tried Jan 22, 2013 · When I unplug my MAS my car dies immediately. Aug 22, 2008 · Do this, unplug the ICV (the power plug only), plug in your maf. I would give it gas and it would be okay. Dies immediately when I plug the sensor in. I relocated my MAF to my intercooler in front of my radiator. If it revs fine it's an ICV issue, not the MAF. It would stall seconds after starting. 3K views 9 replies 7 participants last post by Iarrobino10 Sep 6, 2011 Oct 19, 2009 · 3. Unplugging the MAF sensor while the car is running poses certain risks that car owners should be aware of. Aug 23, 2011 · car dies with maf plugged in. 0 will not run with maf connected. I'm on the highway and car starts rumbling and 2-3k rpm. Just tried it with the original. After a few days suddenly my car turns sluggish and dies out at a red light (rpms jumping up and down). xcpzla rnxee mwxaek mqxr icdncpo xarr yilrr wemj hgsfura wwmac