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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
Backfiring on downshift?
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<blockquote data-quote="TravisHTX" data-source="post: 1485025" data-attributes="member: 40530"><p>Hey all,</p><p></p><p>Just curious if any of you all have noticed this before? I had the truck on the beach this last weekend, in Baja mode, when I would be 3rd gear, and let off off the throttle/engine braking to slow down, and the engine would downshift to 2nd gear, about 2 out of 3 times, I would hear a small pop from what sounded like it was coming from the exhaust. It would also do it from 2nd to 1st.</p><p></p><p>I didn't get a chance to test 4th to 3rd... Tide was too high, and beach too rutted up. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>When I was back on concrete, I put it in normal mode, and did not notice the popping noise anymore. But again, I did not specifically try to reproduce the issue since I didn't want to risk any break down/limp mode that far from a convenient tow. Maybe later today if I have time, I will see if I can reproduce it with Baja, sport, or normal modes while on concrete.</p><p></p><p>About 4 weeks ago, I was on the same beach, running the same PSI (20 PSI), and I do not recall hearing any popping.</p><p></p><p>The truck is completely stock mid 2019 build, and running 93 octane (according to the pump).</p></blockquote><p></p>
[QUOTE="TravisHTX, post: 1485025, member: 40530"] Hey all, Just curious if any of you all have noticed this before? I had the truck on the beach this last weekend, in Baja mode, when I would be 3rd gear, and let off off the throttle/engine braking to slow down, and the engine would downshift to 2nd gear, about 2 out of 3 times, I would hear a small pop from what sounded like it was coming from the exhaust. It would also do it from 2nd to 1st. I didn't get a chance to test 4th to 3rd... Tide was too high, and beach too rutted up. :) When I was back on concrete, I put it in normal mode, and did not notice the popping noise anymore. But again, I did not specifically try to reproduce the issue since I didn't want to risk any break down/limp mode that far from a convenient tow. Maybe later today if I have time, I will see if I can reproduce it with Baja, sport, or normal modes while on concrete. About 4 weeks ago, I was on the same beach, running the same PSI (20 PSI), and I do not recall hearing any popping. The truck is completely stock mid 2019 build, and running 93 octane (according to the pump). [/QUOTE]
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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
Backfiring on downshift?
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