I recently picked up an 04 6-port car with 92k on it which had a "hot start" problem. That turned out to be a bad fuel pump. Now I'm onto another issue with the car which is high RPM lack of power. It was also exhibiting power loss at lower RPM's randomly before I started trying to fix the problem too.
Here is what I have done so far to try and resolve the issues-
Pulled SSV valve and cleaned it. It was VERY dirty. Moved easily with my finger before and after.
VDI valve checked and moves easily
Replaced all the solenoid valves under the intake.
Replaced fuel pump
New spark plugs and wires.
Replaced coils with known good set from another 8 I have
Checked Cat.- It was empty
Replaced muffler thinking pieces of the cat maybe lodged in it
There is no check engine light or stored codes
So after all that the inconsistent lower rpm power is gone but it still behaves like the SSV is sticking- Power loss starts at 6,500-7,000 rpm with popcorn type noise. Any idea what to look into next?
Here is what I have done so far to try and resolve the issues-
Pulled SSV valve and cleaned it. It was VERY dirty. Moved easily with my finger before and after.
VDI valve checked and moves easily
Replaced all the solenoid valves under the intake.
Replaced fuel pump
New spark plugs and wires.
Replaced coils with known good set from another 8 I have
Checked Cat.- It was empty
Replaced muffler thinking pieces of the cat maybe lodged in it
There is no check engine light or stored codes
So after all that the inconsistent lower rpm power is gone but it still behaves like the SSV is sticking- Power loss starts at 6,500-7,000 rpm with popcorn type noise. Any idea what to look into next?
High RPM power loss, Not SSV?
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