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2015+ S550 Mustangs
5.0L Coyote V8 Engine Modification/Discussion
2016 GT engine chirping.
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<blockquote data-quote="Mojo88" data-source="post: 16522754" data-attributes="member: 184279"><p>No CEL's??? I assume not...... I would suggest post a short vid that captures the sound and the assorted rhythms of it.</p><p></p><p>'Chirping' could be internal engine pressure build up and then it vents out after engine warmed up. An easy way to test this is to remove the oil dipstick. If no noise with dipstick removed, then you at least have somewhere to start, like maybe PCV system being obstructed somehow.</p><p></p><p>I once had a Supercharged Pontiac Bonneville SSEI, and I replaced the Eaton S/C with a rebuilt one. I applied to much silicone to the S/C base gasket and plugged up the PCV return port. That engine chirped like a bastard, LOL!! It was similar to yours, only after it warmed up. I took to dealer and they were baffled. Finally I noticed the oil dipstick was actually being blown partially out of its tube, and put 2 + 2 together. I figured it had to be a mistake I made with the new S/C install, so took it off and quickly saw my screw-up, doh.</p><p></p><p>Good luck, hope this helps..... please post results when discovered.</p></blockquote><p></p>
[QUOTE="Mojo88, post: 16522754, member: 184279"] No CEL's??? I assume not...... I would suggest post a short vid that captures the sound and the assorted rhythms of it. 'Chirping' could be internal engine pressure build up and then it vents out after engine warmed up. An easy way to test this is to remove the oil dipstick. If no noise with dipstick removed, then you at least have somewhere to start, like maybe PCV system being obstructed somehow. I once had a Supercharged Pontiac Bonneville SSEI, and I replaced the Eaton S/C with a rebuilt one. I applied to much silicone to the S/C base gasket and plugged up the PCV return port. That engine chirped like a bastard, LOL!! It was similar to yours, only after it warmed up. I took to dealer and they were baffled. Finally I noticed the oil dipstick was actually being blown partially out of its tube, and put 2 + 2 together. I figured it had to be a mistake I made with the new S/C install, so took it off and quickly saw my screw-up, doh. Good luck, hope this helps..... please post results when discovered. [/QUOTE]
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5.0L Coyote V8 Engine Modification/Discussion
2016 GT engine chirping.
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