HELP with MAF
#23
It's not, it makes your car run extremely rich because the car doesn't know exactly how much air is entering, but it is OKAY to do just to get the car home if you need to.
#24
I would love to see some scan tool data on this car, but I'm sure you don't have access to one.
Here is what I'm thinking, take it for what it's worth:
When the MAF is unhooked, the car defaults to a basic set of parameters for the engine to run. If I remember right, all it uses is CKP, CTS, TPS and MAP. Now, when you hook the MAF back up, it tries to use all of it's sensors to run. These include CMP, IAT, HO2S, and the ones I can't remember. So If it's getting a fudged up reading from any of these sensors, it wont run right. It could either be a bad sensor/s or bad wiring. Very hard to track down without a scan tool. IAC does not have anything to do with it. If it idles, the IAC is working. I see very few IAC failures, maybe 2 a year.
Here is what I'm thinking, take it for what it's worth:
When the MAF is unhooked, the car defaults to a basic set of parameters for the engine to run. If I remember right, all it uses is CKP, CTS, TPS and MAP. Now, when you hook the MAF back up, it tries to use all of it's sensors to run. These include CMP, IAT, HO2S, and the ones I can't remember. So If it's getting a fudged up reading from any of these sensors, it wont run right. It could either be a bad sensor/s or bad wiring. Very hard to track down without a scan tool. IAC does not have anything to do with it. If it idles, the IAC is working. I see very few IAC failures, maybe 2 a year.
#25
I agree about the sensor....what is the MAF circuit sensor. My husband is working on it because the garage seems stumped and I am not paying them hundreds of dollars to just try to figure it out. How about the throttle body sensor? He says when he drives it, hears a couple pops but when he turns it off he hears a gurgling nose in the throttle body.
#27
Okay now changed MAF sensor, IAC valve, air filter and throttle body sensor. It's just getting worse. Starting to pop and backfire. Only code it ever throws is the MAF when it is disconnected or when it stalls when it is connected. Any ideas?
#29
maybe you have a leaking intake gasket somewhere, mist some starting fluid around the engine while it's running, if it revs up you have a leak. your map sensor could be junk or it could just have bad rubber sealing on the sensor.
Thread
Thread Starter
Forum
Replies
Last Post
2000montecarlo
Monte Carlo Repair Help
15
01-30-2012 09:33 AM
2000montecarlo
Engine/Transmission/Performance Adders
8
01-21-2012 07:37 PM
anagy007
Monte Carlo Repair Help
12
01-07-2012 10:40 AM