Rattle sound under load?
11-09-03, 02:03 PM
#1
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Rattle sound under load?
Hey guys, I've got a new rattle that I'm REALLY worried about... It started at the autocross this morning, and I was able to get it to make the noise a little on the way home too... Under load in second and third gear, past 5K, I'm getting a "rattle" from under the hood... It was doing it real bad at the autocross, so I stopped running. Definitely not as bad on the way home the couple of time I could do a 2nd/3rd gear pull... Could it be detonation? I think the reason it may have been worse at the autocross was because the cornering loads placed on the car would keep the bowls from filling all the way. Opinions? Ideas? Help me diagnose this guys!!!
Dan
Dan
11-09-03, 02:31 PM
#2
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yah it could be detonation. any black smoke out back right before/during the "rattle"?
mike
mike
11-09-03, 06:45 PM
#4
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Belts are brand new, why would they cause this noise?I haven't seen any smoke, but that's understandable considering I was paying too much attention to the course... Do you think the rattle was from the belts slapping?
Dan
Dan
11-09-03, 06:53 PM
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Make sure all belts are tightened. I had a single belt under my hood (no accessories). It was worn and slightly loose, around the RPMs you described it would sound similar to a small bell ringing, i replaced the belt and tightened it down securely, no more noise.
11-10-03, 01:03 AM
#7
Rotary Enthusiast
Not giving us much to work with. What are you mods to the car?
WHat your timing set at?
Do you still have ANY exhaust shielding on the car, had that more than once, thought the car was going to blow up.
John
WHat your timing set at?
Do you still have ANY exhaust shielding on the car, had that more than once, thought the car was going to blow up.
John
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11-10-03, 06:11 AM
#8
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sorry, power mods are very minor. RB air cleaner and header, Mintrain cat back exhaust... Timing is set at stock... All the heatshielding under the car is still intact. The car has been very well maintained, with all filters and fluids being changed on schedule. car currently has 67K miles.
11-10-03, 02:28 PM
#10
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Originally posted by Lt. Dan
sorry, power mods are very minor. RB air cleaner and header, Mintrain cat back exhaust... Timing is set at stock... All the heatshielding under the car is still intact. The car has been very well maintained, with all filters and fluids being changed on schedule. car currently has 67K miles.
sorry, power mods are very minor. RB air cleaner and header, Mintrain cat back exhaust... Timing is set at stock... All the heatshielding under the car is still intact. The car has been very well maintained, with all filters and fluids being changed on schedule. car currently has 67K miles.
11-10-03, 10:38 PM
#13
sold the FD...kept the FB
a rattle usually means something is loose....maybe a sway bar or some other suspension piece. Is the car down on power? Can you feel the rattle threw the steering wheel, brake pedal, clutch, etc?
11-11-03, 11:04 AM
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um...this may be of no help what so ever, but i had a rattel for the lobgest time and could not figure out hwta it was...then one day...determined...i went under the hood and tightened every bolt i could find...then i leaned on my fender and admired my work, when i realised that my battery tie down was loose and rattling...hink small before you go to the big stuff.
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