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SVT Shelby GT500
Rough idle -getting worse over time
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<blockquote data-quote="XP900" data-source="post: 16940005" data-attributes="member: 199546"><p>I'm keeping my fingers crossed but after 3-4 weeks of the car on ramps I finally finished my work and started her up. I had pulled the injectors and had them serviced (2 weeks) and they produced spec sheets. They rebalanced half of them - variance was around 10% now at 3% across all 8. I checked the SC while off, cleaned it and changed the oil - 3.4 oz according to new VMP recommendations. Smoked tested engine again to make sure there were no air leaks. Cleaned all engine connections and used dielectric grease on fittings. Recleaned MAF, put TB (69 VMP) back on and changed fuel filter. Installed new Mechman alt and checked and rewired all the grounds after installing 1/0 gauge wiring. See other post for alt info. Started up and engine is running very smooth and steady. Drove it for 20 minutes and seems to be running very well - no full boost test yet. I let it idle 4 times today (90s) for 10 minutes at a time and it idles steady with no idle variations (except the slight drop when A/C kicks on). Exhaust sounds nice and steady now with no missing and rpm changes like before. I did not reload the tune yet (may still do that) but my gut tells me to leave it alone for now and see what happens.</p></blockquote><p></p>
[QUOTE="XP900, post: 16940005, member: 199546"] I'm keeping my fingers crossed but after 3-4 weeks of the car on ramps I finally finished my work and started her up. I had pulled the injectors and had them serviced (2 weeks) and they produced spec sheets. They rebalanced half of them - variance was around 10% now at 3% across all 8. I checked the SC while off, cleaned it and changed the oil - 3.4 oz according to new VMP recommendations. Smoked tested engine again to make sure there were no air leaks. Cleaned all engine connections and used dielectric grease on fittings. Recleaned MAF, put TB (69 VMP) back on and changed fuel filter. Installed new Mechman alt and checked and rewired all the grounds after installing 1/0 gauge wiring. See other post for alt info. Started up and engine is running very smooth and steady. Drove it for 20 minutes and seems to be running very well - no full boost test yet. I let it idle 4 times today (90s) for 10 minutes at a time and it idles steady with no idle variations (except the slight drop when A/C kicks on). Exhaust sounds nice and steady now with no missing and rpm changes like before. I did not reload the tune yet (may still do that) but my gut tells me to leave it alone for now and see what happens. [/QUOTE]
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SVT Shelby GT500
Rough idle -getting worse over time
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