|
07-27-2008, 03:09 PM
|
#1
|
Join Date: Mar 2007
Location: effington
Posts: 273
|
i have 2 codes...
hey guys so as soe of you may know i just picked up a 96 z28. anyway it was throwing the ses light so i finally got it scanned at auto zone and got 2 codes...
1. P0100 MAF/VAF a circuit malf.
2. P1441 Manufacturer control aux emission control
after doing a little research i found i should probably get a new maf and that the emissions code ment i have an evap leak. which means i'll have to bring it to the dealer to use their smoke machine.
but anyway any thoughts on this? thanks
__________________
02 F250 7.3
96 F250 351
96 z28 borla cat back k&n cold air and a 3 inch cowl
FOR SALEpm for details
03 vw 20th anninversary gti
4 33x10.50 15 procomp xterrains
|
|
|
07-27-2008, 04:09 PM
|
#2
|
Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,341
|
you seem on the right track. if you have a volt meter, you can check the voltage for the maf.
|
|
|
07-28-2008, 01:51 PM
|
#3
|
Join Date: Mar 2007
Location: effington
Posts: 273
|
just the red maf signal wire and a ground? should have 12.6v or so?
__________________
02 F250 7.3
96 F250 351
96 z28 borla cat back k&n cold air and a 3 inch cowl
FOR SALEpm for details
03 vw 20th anninversary gti
4 33x10.50 15 procomp xterrains
|
|
|
07-28-2008, 09:22 PM
|
#4
|
Join Date: Mar 2007
Location: NJ
Posts: 540
|
The books says you should have 5v between the Signal wire and ground. Should be a 3 wire connector on the MAF, The pink wire is B+ from fuse 1C (eng sensor), The black/white wire is ground and the yellow wire is the signal wire.
|
|
|
07-28-2008, 10:35 PM
|
#5
|
Join Date: Mar 2007
Location: effington
Posts: 273
|
ok let me check that tomorrow. any ideas on the evap thing?
__________________
02 F250 7.3
96 F250 351
96 z28 borla cat back k&n cold air and a 3 inch cowl
FOR SALEpm for details
03 vw 20th anninversary gti
4 33x10.50 15 procomp xterrains
|
|
|
07-28-2008, 10:43 PM
|
#6
|
Join Date: May 2008
Location: Mt Holly
Posts: 86
|
With the evap code, I would check all the vaccum lines first. It's the cheapest and easiest to try first. Also check if the gas cap is loose. If it's the gas cap, it will take a couple trips to clear on it's own.
**In reference to the lines, obviously you want to check for holes, but also look for severe dry cracking. Replace any lines that look doubtful.
Last edited by 88IrocVert; 07-28-2008 at 11:22 PM.
|
|
|
07-29-2008, 05:49 AM
|
#7
|
12 Second Club
Join Date: Sep 2004
Location: Vineland
Posts: 928
|
i would bet money on the evap code being a purge valve.
__________________
87 iroc with the usual go fast stuff
heavier than your half ton.
Last edited by IROCdan330; 07-29-2008 at 05:49 AM.
|
|
|
07-29-2008, 07:43 AM
|
#8
|
Join Date: Mar 2007
Location: NJ
Posts: 540
|
The p1441 description was for EVAP flow during Non-purge. I don't think you need the smoke machine for this code but most of the steps in the chart have you check the parameters with a scan tool. Most of the chart is along the lines of what the other guys mentioned lines, hoses, purge valve, canister.
Last edited by Stevoone; 07-29-2008 at 07:49 AM.
|
|
|
07-29-2008, 08:04 AM
|
#9
|
Sliderule / Moderator
Join Date: Oct 2004
Location: Catawissa PA
Posts: 2,294
|
P1441 - Is likely a vaccum leak, canister breaking up and clogging the line/purge valve or the purge valve stuck.
The canister is behind the driver's side real wheel, need to remove the platic wheelwell to access. The valve is up above the rear. Check the lines for leaks or being clogged.
__________________
93Z M6 Black: The 385 Lives! Supercharged, 3-core front mount intercooler, GTP heads, 3:73's, Street twin clutch, Jethot Longtubes, Mufflex 4" catback/spintech, S+W cage, Spohn Suspenion, Yada Yada Yada
1) Build it
2) Race it
3) Break it
4) Repeat!!!
|
|
|
07-29-2008, 04:41 PM
|
#10
|
Join Date: Mar 2007
Location: effington
Posts: 273
|
so i cleared the evap code and that didnt come back, yet. so i'm thinking that was a loose gas cap or something. but the maf thing is still present i swapped in another maf i had and it's reading .33 all the time, at idle with the rpms up and everything. i think i have a wiring problem yayyy!!
__________________
02 F250 7.3
96 F250 351
96 z28 borla cat back k&n cold air and a 3 inch cowl
FOR SALEpm for details
03 vw 20th anninversary gti
4 33x10.50 15 procomp xterrains
|
|
|
07-29-2008, 04:55 PM
|
#11
|
Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,341
|
you would have to see if the monitor is set for evap, it takes some time unlike most other monitors. try cruising above 55 for a bit, turning the car off somewhere, and doing it again. its not the exact drive cycle, but its somewhat the direction to go.
|
|
|
07-29-2008, 05:55 PM
|
#12
|
12 Second Club
Join Date: Sep 2004
Location: Vineland
Posts: 928
|
Quote:
Originally Posted by black95maro
so i cleared the evap code and that didnt come back, yet. so i'm thinking that was a loose gas cap or something. but the maf thing is still present i swapped in another maf i had and it's reading .33 all the time, at idle with the rpms up and everything. i think i have a wiring problem yayyy!!
|
i believe it takes 3 or so restarts with the code present to put the light on as well.
__________________
87 iroc with the usual go fast stuff
heavier than your half ton.
|
|
|
07-29-2008, 08:31 PM
|
#13
|
Join Date: Mar 2007
Location: NJ
Posts: 540
|
the p1441 code will not run/set until p0100 is fixed. depending on what code is set current it will disable other tests from running.
|
|
|
07-30-2008, 01:41 PM
|
#14
|
Join Date: Mar 2007
Location: effington
Posts: 273
|
so i tested for power at the sensor and didn't have any so naturally i check fuses and the engine sensor fuse was popped. so i swapped a new one in a went to school. light still on the whole ride. start it up to come home and it's out for about 5 miles then comes back on and stayed on. I'm gunna scan it again. this is a pain in the ass
__________________
02 F250 7.3
96 F250 351
96 z28 borla cat back k&n cold air and a 3 inch cowl
FOR SALEpm for details
03 vw 20th anninversary gti
4 33x10.50 15 procomp xterrains
|
|
|
07-30-2008, 02:14 PM
|
#15
|
Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,341
|
how fast were you going when it came on?
|
|
|
07-30-2008, 05:51 PM
|
#16
|
12 Second Club
Join Date: Sep 2004
Location: Vineland
Posts: 928
|
lets say said sensor is shorted and pops the fuse. you said you tried another one...and the code and light were still there. however, did you try the known good one with a good fuse? because the way im reading it is you tried a new sensor with a bad fuse, obviouisly that wont work.
__________________
87 iroc with the usual go fast stuff
heavier than your half ton.
|
|
|
07-30-2008, 08:20 PM
|
#17
|
Join Date: Mar 2007
Location: effington
Posts: 273
|
Quote:
Originally Posted by sweetbmxrider
how fast were you going when it came on?
|
about 50 or 60
Quote:
Originally Posted by IROCdan330
lets say said sensor is shorted and pops the fuse. you said you tried another one...and the code and light were still there. however, did you try the known good one with a good fuse? because the way im reading it is you tried a new sensor with a bad fuse, obviouisly that wont work.
|
i put a new fuse in and it hasen't blown yet and the code and light remain.
__________________
02 F250 7.3
96 F250 351
96 z28 borla cat back k&n cold air and a 3 inch cowl
FOR SALEpm for details
03 vw 20th anninversary gti
4 33x10.50 15 procomp xterrains
|
|
|
07-30-2008, 08:22 PM
|
#18
|
12 Second Club
Join Date: Sep 2004
Location: Vineland
Posts: 928
|
does your scanner only read codes or can you see the datastream as well?
__________________
87 iroc with the usual go fast stuff
heavier than your half ton.
|
|
|
07-30-2008, 09:03 PM
|
#19
|
Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,341
|
its the same code? not something emissions related? like egr?
|
|
|
07-30-2008, 10:24 PM
|
#20
|
Join Date: Mar 2007
Location: effington
Posts: 273
|
Quote:
Originally Posted by sweetbmxrider
its the same code? not something emissions related? like egr?
|
yes same code P0100
Quote:
Originally Posted by IROCdan330
does your scanner only read codes or can you see the datastream as well?
|
yes and when i had the scanner on it the light was off and the maf was responding and working great. when the light is on it's reading .33 and not moving.
__________________
02 F250 7.3
96 F250 351
96 z28 borla cat back k&n cold air and a 3 inch cowl
FOR SALEpm for details
03 vw 20th anninversary gti
4 33x10.50 15 procomp xterrains
Last edited by black95maro; 07-30-2008 at 10:25 PM.
|
|
|
07-30-2008, 10:34 PM
|
#21
|
Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,341
|
is it a rebuilt or brand new? i did a rebuilt in my friends impala and it crapped out real quick. got a new unit and no problems since!
|
|
|
07-31-2008, 01:48 PM
|
#22
|
Join Date: Mar 2007
Location: effington
Posts: 273
|
Quote:
Originally Posted by sweetbmxrider
is it a rebuilt or brand new? i did a rebuilt in my friends impala and it crapped out real quick. got a new unit and no problems since!
|
the other maf? i had it from my spare motor. now sometimes i start my car and the light doesn't come on for the whole ride other times it's on the whole time. this is annoying.
__________________
02 F250 7.3
96 F250 351
96 z28 borla cat back k&n cold air and a 3 inch cowl
FOR SALEpm for details
03 vw 20th anninversary gti
4 33x10.50 15 procomp xterrains
|
|
|
07-31-2008, 02:10 PM
|
#23
|
Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,341
|
well if its still the maf code, i would get a new sensor from a parts store personally. swapping parts around doesn't always work. could have a problem elsewhere though.
|
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
|
|