Sho Problems

[bullittcntydescd14]

OK heres whats it doing.. Strong exahust smell. Jerking when it heats up going up a hill and down. And sometimes when just driving. I took it to autozone and the computer said EGR Valve or he said it should be the EGR Pressure sensor and the other code that came up was the throttle air bypass. How can I test these parts? Anybody have any of these parts cheap?? Oh yea and theres a poping rattle comeing from the back left wheel? What could that be? Any advise i would apricate it...

 

[BeatDaSHO]

Try cleaning the EGR valve and try to clean out the nostrils in the throttle body. Then take off the IAB and clean that. The rattle at the rear left wheel might be a sticking caliper or a collapsed brake hose. Take off the wheel and test it out. Look at the slider pins and make sure they aren't frozen.

Greg

 

[sdpatt]

Since you mentioned smelling the exhaust, the specific code number is needed to properly diagnose the EGR problem. Refer to the links at teh bottom of my signature to learn the extemely simple method to check the codes yourself. There is a chance that the EGR tube has come loose at the exhaust manifold ****** and is leaking exhaust. This could create both the smell and the EGR code. But it depends on the specific code number. Please try yo check the codes and get back to us.

The "throttle air bypass," would that be the idle air bypass (IAB) or idle air control (IAC) valve? Again, the code number is important to porperly diagnose the problem and until you know what the problem is, you can't fix it.

The IAC valve should not be causing a misfire (bucking). It would cause low or fluctuating idle speed. First check the electrical connector at the IAC valve (D-cell sized motor to the passenger side of the intake manifold split at the throttle body).

A misfire without a telltale code is usually caused by plugs or plug wires. What plugs, plug gaps and wires are installed?

 

[bullittcntydescd14]

The codes are 327 and 551 The only smell is the exahuast which is a rich smell. headbang There is no exahuast coming from the engine.

 

[sdpatt]

327 (O,R,M) EGR feedback signal is/was low
551 Problem in Intake Manifold Runner Control (IMRC) solenoid/circuit

The 327 code could be a broken EGR tube attachment to the rear bank number three cylinder exhaust manifold runner or non-working EGR valve. Check the rubber hoses from the DPFE module to the EGR tube and the vacuum connections to the EGR valve. Those plastic tubes are quite brittle and easily broken. Either that, or the DPFE pressure sensor module (silver box on the rear plenum of the intake manifold) is failing.

The 551 code says that you need to check the secondary runner control solenoid on the center of the rear intake manifold plenum. It may just need the electrical connector attached properly.