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BOBBYSS
BOBBYSS, Master Technician
Category: Chevy
Satisfied Customers: 17170
Experience:  ASE MASTER CERTIFIED, AA DEGREE AUTO/DIESEL TECH
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igot PO107 code i changed map sensor already and cleared code

Resolved Question:

igot PO107 code i changed map sensor already and cleared code but still came on again what can i do
Submitted: 7 years ago.
Category: Chevy
Expert:  BOBBYSS replied 7 years ago.
HelloCustomer what kind of Cherolet vehicle is this and what size engine does it have?
Customer: replied 7 years ago.
silverado 1500 2003 4.8 L 2wd
Expert:  BOBBYSS replied 7 years ago.
Okay, and how is the vehicle running?
Customer: replied 7 years ago.
it flutter and seem to be misfiring
Expert:  BOBBYSS replied 7 years ago.
Okay. Start by checking the engine vacuum with a vacuum gauge to see if it is correct. If not then the problem may be internal. If the vacuum is fine then then you either have a problem with the wiring to the ECM or with the ECM itself.
Customer: replied 7 years ago.
i got a PO336 code where is the crank shaft sensor
Expert:  BOBBYSS replied 7 years ago.
The crank sensor is located above the starter as shown. Is the other code still present?

graphic
Customer: replied 7 years ago.
po107 code is not coming up anymore i'm only getting po300 po336 and po101 after i took it around the block it still turns off and pretty much had to keep foot on the gas or it would turn off
Expert:  BOBBYSS replied 7 years ago.
Did you replace the crank sensor?
Customer: replied 7 years ago.
haven't change the crank sensor yet im gona do that today
Expert:  BOBBYSS replied 7 years ago.
Okay. I would change out the crank sensor and clean out the mass air flow sensor with mass air flow cleaner.
Customer: replied 7 years ago.
okay changed out crank sensor clean out mass air sensor still have code po300 and po101 what should i check nexts
Expert:  BOBBYSS replied 7 years ago.
Did you erase these codes after the work was done? If so how long did it take for them to come back on?
Customer: replied 7 years ago.
yes I erased the codes, after it was on for a bit but it started rough anyway the code came back
Expert:  BOBBYSS replied 7 years ago.
Will the vehicle run fine at higher speeds?
Customer: replied 7 years ago.
as long as I dont take foot off gas
Expert:  BOBBYSS replied 7 years ago.
Okay. This sounds like a bad intake manifold gasket. This is a common failure on this engine. If the manifold gasket is bad then this will happen.
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