dorkidori_s13
Member
- :
- 2003 Mazda Protege5
So, Ive spent hours searching for an answer to this question both on and off the forums and I havent been able to find any sort of conclusion to the problem.
I have a 2002 Protege5 with 200k+ miles on it... now before I go into any further details, this is what Ive done since I purchased the car over the summer:
• Replaced timing belt assembly + water pump (brand new)
• Changed oil (running 10w40 now due to heat in Vegas)
• Replaced fuel sending unit (brand new)
• Replaced fuel pump (brand new)
• Replaced fuel pressure regulator (brand new)
• Replaced spark plugs (brand new OE longer design)
• Replaced coil wires + packs (brand new)
• Cleaned MAFS
• Cleaned Ambient Air Intake Temp Sensor
• No ECU codes being thrown (checked with OBD2 sensor)
• Car is run on nothing but 91 octane
• Replace K&N air filter element on AEM intake with brand new K&N (old one was TRASHED, previous owner didnt care for the car at all)
• Reset ECU post installation of new parts for ECU to relearn
NOTHING Ive done has helped alleviate the issue. Basically after driving the car for 15-20 minutes and letting the engine reach normal operating temperatures for an extended amount of time, through the entire RPM band above 2500 I get what sounds like pinging (pre-detonation) coming from the engine bay!!! Pinging occurs at almost any amount of throttle pressure given to the pedal. Though sometimes AT RANDOM, Ill jump on the throttle and the pinging will stop but as soon as I shift (ie: 2nd to 3rd), it comes back.
Outside of replacing the MAF itself, installing new injectors, replacing ambient air temp sensor, replacing fuel pulsation damper and possibly installing a new knock sensor... im really out of ideas for how to fix the problem! Ive read all over that pinging occurs in damn near everyones motor, but this doesnt sound right at all! Pre-detonation is bad mmmkay and I highly doubt Mazda engineered this motor to ping scars into the cylinder walls and toast pistons!!! Ive been thinking about removing the VICS (whatever the butterfly valves are called) from the intake manifold as Im thinking Im hearing the butterflys fluttering via my intake pipe (since its metal and doesnt dampen intake manifold noise like the rubber OE unit does). My IS300 had a butterfly valve in the intake mani that would flutter open around 3500rpms on the dot and make a sound like pinging, but it was literally only for an instant and then never heard again thru the power band.
So yeah, anyone wanna try and help me out with this as Im really frustrated and seriously feel like Im just throwing parts at the car until I figure out what fixes the problem instead of diagnosing it properly based on experience from other folks who have actually SOLVED this issue!
I have a 2002 Protege5 with 200k+ miles on it... now before I go into any further details, this is what Ive done since I purchased the car over the summer:
• Replaced timing belt assembly + water pump (brand new)
• Changed oil (running 10w40 now due to heat in Vegas)
• Replaced fuel sending unit (brand new)
• Replaced fuel pump (brand new)
• Replaced fuel pressure regulator (brand new)
• Replaced spark plugs (brand new OE longer design)
• Replaced coil wires + packs (brand new)
• Cleaned MAFS
• Cleaned Ambient Air Intake Temp Sensor
• No ECU codes being thrown (checked with OBD2 sensor)
• Car is run on nothing but 91 octane
• Replace K&N air filter element on AEM intake with brand new K&N (old one was TRASHED, previous owner didnt care for the car at all)
• Reset ECU post installation of new parts for ECU to relearn
NOTHING Ive done has helped alleviate the issue. Basically after driving the car for 15-20 minutes and letting the engine reach normal operating temperatures for an extended amount of time, through the entire RPM band above 2500 I get what sounds like pinging (pre-detonation) coming from the engine bay!!! Pinging occurs at almost any amount of throttle pressure given to the pedal. Though sometimes AT RANDOM, Ill jump on the throttle and the pinging will stop but as soon as I shift (ie: 2nd to 3rd), it comes back.
Outside of replacing the MAF itself, installing new injectors, replacing ambient air temp sensor, replacing fuel pulsation damper and possibly installing a new knock sensor... im really out of ideas for how to fix the problem! Ive read all over that pinging occurs in damn near everyones motor, but this doesnt sound right at all! Pre-detonation is bad mmmkay and I highly doubt Mazda engineered this motor to ping scars into the cylinder walls and toast pistons!!! Ive been thinking about removing the VICS (whatever the butterfly valves are called) from the intake manifold as Im thinking Im hearing the butterflys fluttering via my intake pipe (since its metal and doesnt dampen intake manifold noise like the rubber OE unit does). My IS300 had a butterfly valve in the intake mani that would flutter open around 3500rpms on the dot and make a sound like pinging, but it was literally only for an instant and then never heard again thru the power band.
So yeah, anyone wanna try and help me out with this as Im really frustrated and seriously feel like Im just throwing parts at the car until I figure out what fixes the problem instead of diagnosing it properly based on experience from other folks who have actually SOLVED this issue!
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