This is a discussion on Dead MAF? within the General Help forums, part of the LSx Technical Help Section category; How I can tell if my MAF sensor is messed up? My car is running pretty rich, I am getting ...
12-26-2007, 09:08 PM #1
How I can tell if my MAF sensor is messed up?
My car is running pretty rich, I am getting bad gas milage and when I start the car it takes me a while to get it started.
Starter, battery, and plugs are fine.
12-26-2007, 09:11 PM #2
- Join Date
- Dec 2006
- 2001 Camaro SS A4
check O2 sensors
12-26-2007, 10:27 PM #3
Any codes? Whats your fuel pressure at?
J2001 SS, Its not the car its the Driver that matters....
12-26-2007, 10:39 PM #4
does it do it on cold starts? If so you can rule out O2's because the car is in open loop and not using the O2's for fueling. Does the car miss at all?
12-26-2007, 10:58 PM #5
unplug the sensor and see if it runs better. thats how I tell if it is bad
the PCM defaults to speed density formula which is a fail-safe for the maf sensor
12-27-2007, 12:11 AM #6
You could also reset the PCM by disconnecting the battery for about an hour. That will let the vehicle re-learn fuel tables and all that fun stuff...
Don't think the car will turn over at all if the sensor's disconnected. A speed density program requires a MAP sensor which I don't think the LS1's have, so how would it do so?
12-27-2007, 12:26 AM #7
LS1's have a map sensor....it's on the back of the intake. I ran my car speed density all last year. The OP has an LT1 though.
12-27-2007, 01:40 AM #8LS1's have a map sensor....it's on the back of the intake. I ran my car speed density all last year. The OP has an LT1 though.
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