Is my maf toast??
Thread Starter
Intermediate
Joined: May 2009
Posts: 28
Likes: 0
Is my maf toast??
HI,
I Have a 94 it starts up rough and sometimes revs up really high and starts surging like its possessed. no codes present. someone told me to check the MAF upon taking it apart to clean it I noticed it looked very burnt so I sprayed it down. still looked burnt so I plugged it in the car still does the same thing. Funny thing if I unplug the MAF the car shuts off but once plugged in it starts like a champ only if I unplug it while the car is on.
if I unplug it then try to start it she'll act up. so what im trying to say is if the car is off and the MAF is plugged in or not it starts the same unless I unplug it while the car is on.
SHOULD I BUY A NEW MAF??
these codes are from a previous problem that I got fixed
MODULE 1 H13
MODULE 4 H22
MODULE 9 H64 H72
could any of this be part of the problem still? the car does have an after market intake with K&N Filters on it.
hopefully someone can HELP. THANKS IN ADVANCE.
I Have a 94 it starts up rough and sometimes revs up really high and starts surging like its possessed. no codes present. someone told me to check the MAF upon taking it apart to clean it I noticed it looked very burnt so I sprayed it down. still looked burnt so I plugged it in the car still does the same thing. Funny thing if I unplug the MAF the car shuts off but once plugged in it starts like a champ only if I unplug it while the car is on.
if I unplug it then try to start it she'll act up. so what im trying to say is if the car is off and the MAF is plugged in or not it starts the same unless I unplug it while the car is on.
SHOULD I BUY A NEW MAF??
these codes are from a previous problem that I got fixed
MODULE 1 H13
MODULE 4 H22
MODULE 9 H64 H72
could any of this be part of the problem still? the car does have an after market intake with K&N Filters on it.
hopefully someone can HELP. THANKS IN ADVANCE.
Thread Starter
Intermediate
Joined: May 2009
Posts: 28
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THANKS C409
I checked for vacuum leaks found 2 the hoses from the cruise control. fixed those.
The car still starts rough. I let her warm up and disconnected the MAF and the fans came, the ses lit up the car stayed on. How do I check to see if the MAF is working or not. should I just replace it cause of the hard/rough start and it looking burnt inside even after cleaning it. with the MAF plugged in or not it starts the same hard/rough.
any advice is going to be put to great use.
THANKS AGAIN.
I checked for vacuum leaks found 2 the hoses from the cruise control. fixed those.
The car still starts rough. I let her warm up and disconnected the MAF and the fans came, the ses lit up the car stayed on. How do I check to see if the MAF is working or not. should I just replace it cause of the hard/rough start and it looking burnt inside even after cleaning it. with the MAF plugged in or not it starts the same hard/rough.
any advice is going to be put to great use.
THANKS AGAIN.
Thread Starter
Intermediate
Joined: May 2009
Posts: 28
Likes: 0
Hey,
Its throwing these codes now
MODULE 4 H48 H22........Im assuming H48 is because I disconnected the MAF
MODULE 9 H64
SERVICE ASR is on
Still starting up the same hard/rough. but it idles fine.
120 + views someone has to atleast have an idea please help
THANKS AGAIN
GSGT. USMC
Its throwing these codes now
MODULE 4 H48 H22........Im assuming H48 is because I disconnected the MAF
MODULE 9 H64
SERVICE ASR is on
Still starting up the same hard/rough. but it idles fine.
120 + views someone has to atleast have an idea please help
THANKS AGAIN
GSGT. USMC
Thread Starter
Intermediate
Joined: May 2009
Posts: 28
Likes: 0
Hey,
Its throwing these codes now
MODULE 4 H48 H22........Im assuming H48 is because I disconnected the MAF
MODULE 9 H64
SERVICE ASR is on
Still starting up the same hard/rough. but it idles fine.
120 + views someone has to atleast have an idea please help
THANKS AGAIN
GSGT. USMC
Its throwing these codes now
MODULE 4 H48 H22........Im assuming H48 is because I disconnected the MAF
MODULE 9 H64
SERVICE ASR is on
Still starting up the same hard/rough. but it idles fine.
120 + views someone has to atleast have an idea please help
THANKS AGAIN
GSGT. USMC
Le Mans Master
Joined: Feb 2005
Posts: 6,479
Likes: 565
From: Clearwater Florida
..... Disconnect the negative terminal at the battery , this will clear the codes ... it won't fix them , but it'll clear them long enough for you to drive the car some and see what codes come back ... those will need to be fixed by using the diagnostic flow charts found in the Helms factory service manual ... as for the hard start , try this and see if it helps ... next time you get in the car turn the ignition key to the run position ... put your seat belt on ... then crank it up ... this gives the fuel pump an opportunity to prime the rails and injectors before you crank the engine over ...........
Melting Slicks
Joined: May 2010
Posts: 2,082
Likes: 3
From: Conowingo Maryland
you are going to see a burnted areas. When it nurns off it gets very hot real fast so that would not be a tale tale to me. 22 is a TPS code i would start there after you clear the codes like c409 said and it reapears
Thread Starter
Intermediate
Joined: May 2009
Posts: 28
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ive already delete the codes and unplugged the batt.
these still keep coming back
MODULE 4 H22
MODULE 9 H64
Shes still starts rough. its a new TPS is there a way to adjust it?
also the IAC is new. its what they installed when I took her in.
because of those same codes shes throwing again.
I dont want to take her in to the same shop because they dont seem to know
what they are doing. should I go to the dealers?
I can see the 2 new sensors and pigtails and everything is wrapped in black electrical tape. Do you think I should remove the tape and see how the connections are?
THANKS AGAIN FOR YOUR REPLIES.
GSGT. USMC
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Melting Slicks
Joined: May 2010
Posts: 2,082
Likes: 3
From: Conowingo Maryland
I would for sure remove the tape. The code for the tps is saying it is see a adnoral low voltage this could be because it it not getting the correct reference voltage or it is out of adjustment. I would see what is under the tape then take it from there. It may be just a simple adj
Thread Starter
Intermediate
Joined: May 2009
Posts: 28
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I would for sure remove the tape. The code for the tps is saying it is see a adnoral low voltage this could be because it it not getting the correct reference voltage or it is out of adjustment. I would see what is under the tape then take it from there. It may be just a simple adj
ill check this stuff out tomorrow bright and early. ill report my findings
do you have an idea why its throwing MODULE 9 H64 and Service ASR Light?
THANKS AGAIN FOR YOUR HELP
Le Mans Master
Joined: Sep 2004
Posts: 6,019
Likes: 568
From: Conroe Texas
I had a c5z that I put a honker intake on and it soon started throwing codes you wouldn't believe, even non engine related, and go into the limp home mode. finally tracked it down to the air filter which is similar to the k&n, oil based. my maf was a honey color it had so much oil baked on it. blew off most of the oil out of the filter ( came that way from callaway ) and cleaned the maf with a spray cleaner. about every 6 months I would clean the maf but never had anymore issues with it.
Thread Starter
Intermediate
Joined: May 2009
Posts: 28
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I haven't had time to really get into it.
I took the tape off and found twisted wires and they are
only covered with black electrical tape. Today I bought some black heat shrink tubing.
Should I just cover the exposed wires with heat shrink or use something else aswell?
THANKS AGAIN
Thread Starter
Intermediate
Joined: May 2009
Posts: 28
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Yes it is the pigtails that they installed on the TPS and IAC.
Ill be going down to the store to buy a soldering gun.
after I make the repairs Ill report back.
THANKS AGAIN FOR YOUR HELP.
Thread Starter
Intermediate
Joined: May 2009
Posts: 28
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HEY Guys
I had to move the car to better access the wires that need soldering. after I let her warm up I revved her up and noticed the speedometer showed that the car was doing 10mph. the car was in park while revving. Could this also be related to the problems shes having?
is this a separate issue?
THANKS AGAIN FOR YOUR HELP
I had to move the car to better access the wires that need soldering. after I let her warm up I revved her up and noticed the speedometer showed that the car was doing 10mph. the car was in park while revving. Could this also be related to the problems shes having?
is this a separate issue?
THANKS AGAIN FOR YOUR HELP
Melting Slicks
Joined: May 2010
Posts: 2,082
Likes: 3
From: Conowingo Maryland
Mike one thing that you really need to pay attention to and make sure that the pervious owner did not mess up is the wireing order on the pigtales. I have seen it over and over where someone had to replace a wire or pigtail or something and they get the wires in the wrong spot. Please with each wire it is going into the correct spot. Im not sure if you have a fsm or not but this is where they really pay for themselves. If you do not have one just ask Im sure there are enough people on here that will help you get things in the right order