Drop in to an Autozone or Pep Boys or one of the bigger parts retailers and they will scan it for free and explain what code is pointing you to. That way you can buy the part right there or at least you'll know what to expect.
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If your 2008 Suzuki XL7 was running rough with sputtering and would not pick up speed, and you have already changed both fuel pumps, then there may be other possible causes for the issue. Here are a few things you can check:
Check the fuel filter: If the fuel filter is clogged or dirty, it can cause fuel flow problems and result in similar symptoms. Try replacing the fuel filter to see if it helps.
Check the fuel pressure: Use a fuel pressure gauge to check the fuel pressure at the fuel rail. If the pressure is low, it could indicate a problem with the fuel pressure regulator, fuel injectors, or other components.
Check the spark plugs: Worn or fouled spark plugs can cause misfires and rough running. Try replacing the spark plugs to see if it helps.
Check the air filter: A dirty air filter can restrict airflow to the engine and cause poor performance. Try replacing the air filter if it's dirty.
Check for vacuum leaks: Leaks in the vacuum system can cause rough running and poor acceleration. Check all vacuum hoses and connections for leaks or damage.
If none of these solutions work, there may be other underlying issues with the engine or other components that require further diagnosis by a mechanic.
Chev Cavalier has had problems with the crank position sensor, mounted on the bell housing, where it picks up the crank position. Check it with a meter to see if it is OK, else the fuel injection system could be clogged (fuel filter is the main culprit).
Check for vacuum leak.Check all vacuum hoses and especially around the intake manifold these motos are prone for intake gaskets leaking.This will cause a code P0300.HOPE THIS HELPS!!
codem p 0203 refers to injector 3---circuit malfunction===causes wiring--injector--ECM
chweck for harness connection , bad wire for no 3 injector or corroded pins for no 3 injector in the connection
I had the same problem with my dodge neon. Its your transmission slipping. My car had to have all the transmission flushed and it helped alot, but the longer you let it go, the damage could be permanent.
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