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Jeep Wrangler YJ
YJ General Discussion
Rough Idle on 89 YJ 2.5L
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<blockquote data-quote="Smiling_JIm" data-source="post: 435541" data-attributes="member: 20427"><p>89 YJ has rough idle, but runs smooth in the higher RPM ranges. Pic attached of a Manifold and TBI (not mine but similar). When I spray Brake/Carb Cleaner at or near the Vacuum Tubes (arrow) the idle smooths out for a few seconds. Pretty sure this indicates a hairline crack in one of the tubes. I am thinking of a wire wheel cleanup, then paste some JB Weld over the suspect areas. This because I want to avoid re-doing all the tubing, or spending the weekends in wrecking yards looking for replacements. Also wondering if 2 of those Vac Tubes go to the Front Axle CAD Disconnect, which I am thinking of replacing with a Posi-Lok.</p><p></p><p>[ATTACH=full]120119[/ATTACH]</p></blockquote><p></p>
[QUOTE="Smiling_JIm, post: 435541, member: 20427"] 89 YJ has rough idle, but runs smooth in the higher RPM ranges. Pic attached of a Manifold and TBI (not mine but similar). When I spray Brake/Carb Cleaner at or near the Vacuum Tubes (arrow) the idle smooths out for a few seconds. Pretty sure this indicates a hairline crack in one of the tubes. I am thinking of a wire wheel cleanup, then paste some JB Weld over the suspect areas. This because I want to avoid re-doing all the tubing, or spending the weekends in wrecking yards looking for replacements. Also wondering if 2 of those Vac Tubes go to the Front Axle CAD Disconnect, which I am thinking of replacing with a Posi-Lok. [ATTACH type="full" width="558px"]120119[/ATTACH] [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
Rough Idle on 89 YJ 2.5L
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