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Old 04 Jun 2017, 09:02 am
partyd partyd is offline
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Join Date: Mar 2008
Location: Orlando Florida
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Default Re: P2074 CHRYSLER Manifold Pressure

Quote:
Originally Posted by ptcruisersteve View Post
P0274 = Manifold Pressure / Throttle Position Correlation; High Flow & Vacuum Leak

Possible Causes:

1. Vacuum leak in hoses or component connections
2. High resistance or resistance to ground in MAP 5 volt supply or signal circuit
3. MAP Sensor has failed
4. High resistance in MAP ground circuit
5. Throttle Position Sensor has failed or is improperly adjusted
6. High resistance or resistance to ground in Throttle Position Sensor 5 volt supply or signal circuit
7. High resistance in Throttle Position Sensor ground circuit
8. PCM has failed

Check all the hoses.

1. Inspect the Intake Manifold for leaks and cracks.
2. Inspect the Power Brake Booster for any vacuum leaks.
3. Inspect the PCV system for proper operation or any vacuum leaks.
4. Check all hoses on the turbo.
I spend all day checking everything, all the hoses are good, I replace one and use clamps for all of them
Almost everything was replaced, Throttle body with sensor and plastic intake map sensor, cam sensor, I took all the engine mounts to see the timing belt
and it's almost perfect, the intake cam is move half of a tooth but if I fix it, it will be half of a tooth the other way, I have done about 6 timing belts and sometimes they are not perfect, once In a different vehicle I was 1 tooth out and it run perfectly, I know timing belt is not the problem.
this car drives ok, but it's weak and it idles bad, my next option is the computer but I have to replace it without been 100% sure that the problem is there, i need to find a way to test it
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2008 Pt cruiser Touring
2004 Pt Cruiser GT
2004 Chrysler 300M
2008 Chrysler Pacifica awd
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