I have a 99 GT that is making a grinding noise near the harmonic balancer. It sounds like the timing chain is rubbing against the engine cover.
The sound seems to be coming from the area around the harmonic balancer.
Background: My check engine light came on 2 months prior with intermittent P0300 – 308 Random and specific cylinder misfires.
I used my ODBII reader to erase the codes only to have them reappear 2 weeks later. Problems continued and became more frequent.
I was blasting a WRX all the way home from work and as I pulled into my driveway I started hearing the noise but it was still very faint. The noise became louder and is now an obvious and loud noise that appears to be very serious. During the race I did not exceed 5K RPM
Here’s what I have done to diagnose the issue:
ACTION: Removed the belt and started engine to see if a belt driven component such as water pump was causing it.
RESULT: Engine still makes the noise so it is not belt driven.
ACTION: took off both valve covers and briefly started engine incase the noise may have been coming from heads (cam)
RESULT: The noise is not coming from the head nor is it coming from that general area.
Dees anyone have any experience with such a noise and maybe next steps in this diagnostics.
Miles on car : 120K
Modifications to the car: NOTE: None of these mods have been done recently
Cold Air
70mm Throttle body
X-Pipe w/Cats
Magnaflows
3.73’s
Pulleys
PS: If your suggestion is get a new car, I just bought a 03 Cobra
Thanks in advance for any info
The sound seems to be coming from the area around the harmonic balancer.
Background: My check engine light came on 2 months prior with intermittent P0300 – 308 Random and specific cylinder misfires.
I used my ODBII reader to erase the codes only to have them reappear 2 weeks later. Problems continued and became more frequent.
I was blasting a WRX all the way home from work and as I pulled into my driveway I started hearing the noise but it was still very faint. The noise became louder and is now an obvious and loud noise that appears to be very serious. During the race I did not exceed 5K RPM
Here’s what I have done to diagnose the issue:
ACTION: Removed the belt and started engine to see if a belt driven component such as water pump was causing it.
RESULT: Engine still makes the noise so it is not belt driven.
ACTION: took off both valve covers and briefly started engine incase the noise may have been coming from heads (cam)
RESULT: The noise is not coming from the head nor is it coming from that general area.
Dees anyone have any experience with such a noise and maybe next steps in this diagnostics.
Miles on car : 120K
Modifications to the car: NOTE: None of these mods have been done recently
Cold Air
70mm Throttle body
X-Pipe w/Cats
Magnaflows
3.73’s
Pulleys
PS: If your suggestion is get a new car, I just bought a 03 Cobra
Thanks in advance for any info