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Old Mar 20, 2009 | 10:24 PM
  #1  
Cobra Highboy's Avatar
Cobra Highboy
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From: Ogden Utah
Trouble codes

Hey guys,
I have been experiencing a little slugishness in my truck. I have an edge evolution programmer and I checked trouble codes. This is what I got.
PO 113 Intake air temp what and where is it?
PO 236 Turbo Boost, same thing what and where?
I looked in my chilton manual but chiltons arent what they used to be, I couldn't find the info I was looking for so I am hoping someone will be able to help. I have not been disapointed yet. Pics might be helpful if poossible.
Thanks
 
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Old Mar 20, 2009 | 11:01 PM
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From: Belair md
do you have an aftermarket air intake installed? if so the air intake sensor is probably unplugged. wont affect the motor at all. it is located near the master cylinder and would have plugged into the factory air box in that general area.

the 236 is a map sensor code, do you have any power problems?
 
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Old Mar 21, 2009 | 12:10 PM
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Yes it seems low on power and sluggish on takeoff.
 
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Old Mar 21, 2009 | 01:07 PM
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From: Belair md
check for a plugged map sensor hose to start, and if that seems ok try driving with the map sensor unplugged
 
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Old Mar 27, 2009 | 07:34 PM
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Ok getting back to this issue finally. I checked the hose for blockage and it was clear. so I unplugged the MAP sensor and drove the truck and no change in performance at all. It drove exactly the same so I am convinced that the MAP sensor is bad. Does this sound right?
 
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Old Mar 27, 2009 | 08:17 PM
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If the map sensor is bad the truck should run better with it unplugged. Have u checked your fuel pressure?
 
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Old Mar 27, 2009 | 08:55 PM
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No I haven't. How do you check the fuel pressure.
 
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Old Mar 27, 2009 | 09:06 PM
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you can check it on the schrader valve on the fpr. The fpr is on the side of the fuel filter. the schrader valve should what looks like a valve stem cap on it. If you have 49 state emissions you should be at 50# cali should be around 70#
 
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Old Mar 27, 2009 | 09:16 PM
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So can you check it with a tire gauge or is there a special fuel pressure gauge to buy? I know exactly where you are talking on the schrader valve. I seen it the other day when I was under the hood.
 
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Old Mar 27, 2009 | 09:23 PM
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A tire gauge will only give you the high pressure reading and i am not shure as to how accurate it would be. I know sears sells a fuel pressure gauge for around 45 dollars.
 
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Old Mar 27, 2009 | 09:43 PM
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Awesome! Ill go buy one and check it. I appreciate the help.
 
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Old Mar 28, 2009 | 07:41 AM
  #12  
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From: MICHIGAN
Originally Posted by Cobra Highboy
Ok getting back to this issue finally. I checked the hose for blockage and it was clear. so I unplugged the MAP sensor and drove the truck and no change in performance at all. It drove exactly the same so I am convinced that the MAP sensor is bad. Does this sound right?
P0236 = Turbo Boost Sensor A Circuit Performance
I'll bet the MAP is bad. You'll need some way of measuring frequency to test it though.

Here's how to check P0236:
.
.
 
Attached Images
File Type: pdf
MAP 1.pdf (33.8 KB, 785 views)
File Type: pdf
MAP 2.pdf (68.4 KB, 565 views)
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Old Mar 28, 2009 | 10:26 AM
  #13  
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If it dose turnout to be your map sensor autozone carrys one for out trucks for $79.99
 
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Old Mar 28, 2009 | 03:09 PM
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Ok I replaced the map sensor but before I did that I checked my codes again and got the PCM keep alive memory code. I can't find anything on that in my manual so If someone can explain that one that would be great. I think the chilton manual is going in the garbage, I get more information out of everyone here than I can get out of that thing. once again thanks everyone for the help.
 
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Old Mar 28, 2009 | 04:22 PM
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The KAM error is common with any chip or tuner. It won't trip the CEL, so the best thing to do is just ignore it.
 
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