Pcm code PO101
Thread Starter
Former Vendor
Joined: Mar 2004
Posts: 3,442
Likes: 18
From: Winchester CA
Pcm code PO101
I know its for MAF system performance, but is there anyway to test the Maf, without using a ocilliscope (i think thats how you spell it), or when you usually get these codes do you just just replace the MAF and be done with it, by the way my car as stage 3 LS6 heads from west coast cylinder heads, and g5x3 cam, fast manifold, and NW 90 tb, and of course the other usual bolt ons. everytime this code pops up my car starts to search for idle or just stall, its really pi$$ing me off.
Burning Brakes
Joined: Sep 2002
Posts: 1,117
Likes: 1
From: Cedar Falls Iowa
Originally Posted by RyneZ06
anyone ?????, any help would be great
P.S. this comes up on mine once in awhile.
Former Vendor
Joined: Sep 2003
Posts: 129
Likes: 0
From: FortMyers FL
Air getting into the engine that is not seen by the MAF! P0101
1. Crack in the air bridge
2. Leak in the coupling after the MAf ot T-Body
3. Intake not sealing to heads from heads being milled
4. air leak vauum hose at rear manifold
5. throttle Body Gasket
6. Fast manifold leaking
Find shop that has a smoke machine to find vacuum leak!
1. Crack in the air bridge
2. Leak in the coupling after the MAf ot T-Body
3. Intake not sealing to heads from heads being milled
4. air leak vauum hose at rear manifold
5. throttle Body Gasket
6. Fast manifold leaking
Find shop that has a smoke machine to find vacuum leak!
Melting Slicks
Joined: Jan 2004
Posts: 2,527
Likes: 1
From: St. Petersburg, Fl///Columbus, Ohio
This message applies to all 1999 through 2004 Chevrolet, GMC, Olds, Buick and Cadillac pick-ups and utilities that are equipped with either the 4.8 liter, 5.3 liter or 6.0 liter Gen 3 V-8 engines. Recent warranty analysis indicates that both the MAF, or mass airflow sensor, and the MAP, or manifold absolute pressure sensor, are being replaced for a MAF sensor code P0101. The cause may actually be a MAP sensor failure causing the MAF sensor code. One of the MAP sensor[rsquo ]s primary functions is the calculation of the speed density formula, which is compared to the MAF sensor reading. Should the MAP sensor fail, the PCM may interpret this as a MAF sensor concern and set a P0101 code. If diagnostics are followed thoroughly the technician may find a MAP sensor failure causing this condition. In conclusion, when a MAF sensor code of P0101 is found the technician needs to verify the proper operation of the MAP sensor before concluding that the MAF sensor requires replacement.
Hope that helps!!!!
Hope that helps!!!!
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Thread Starter
Former Vendor
Joined: Mar 2004
Posts: 3,442
Likes: 18
From: Winchester CA
thanks guys, i have heard the fast has leaking problems, but for now i will check all my connections, i have already replaced the MAP a couple times , it may be that but it would kinda unlucky
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,396
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
If you spray carb cleaner around all of the areas that are potential air leaks, if there is one the engine idle will be effected when the leak is spryed.
BC
BC
