Help Codes !!!!!

[SHO_Stop'r]

hey I ran the codes on my SHO got

551 - intake manifold problem - soloniods
157 - MAF was-is low or grounded
211 - ignition PIP signal was erratic or missing

can anyone tell me what this means and how to fix
i heard the 511 intake one is for the idle air senor.

 

[SHO_Stop'r]

jsut did the engine running test and compression test too

116 - engine coolant sensor out of range
172 - Oxygen sensor not switching - system is or was lean - Single, Right orr Rear HO2S - Fuel control
411 - Idle speed system not controlling idle properly (generally idle too high) - ISC
538 - System did not receive "goose" test

i dont understand the clyinder ones..
i got 123....123

PLZ HELP

 

[Rockledge]

I'd try and resolve the 211 code first, since it all pretty much starts there. This code usually means the Crank Position (PIP) Sensor is failing, although the problem could be in the circuit, too.

Any "shut down" or "no start" situations lately?

 

[sdpatt]

The 551 is the intake manifold runner control (secondaries) NOT the idle air control valve. First check to see if it is plugged in.

 

[SHO_Stop'r]

thnx for the help. I jsut took off the intake and redid all the gaskets prob week and half ago. I replaced the cam sensor. So what should i do now :/

 

[SHO_Stop'r]

I had it in another post, My car started going crazy on me the other day on the freeway. It started misfiring and stuttering, it idles bad jumping alot. And those are the codeds it gave me any more ideas. what is causing the midfires backfires and crazy running I dont wanna drive it the way it is now.