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#1 |
Mustang Maniac
Join Date: Sep 2000
Location: GA, U.S.A
Posts: 2,266
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![]() Hey, the GT is not doing bad, but the it's having a little problem.
1) When I first crank it after it's been sitting for overnight, it really wants to shut off if I allow it to. 2) After it has warmed up, it doesn't idle well. It'll idle high (~1100 rpm) for a few seconds, then idle low (~ 600) in a loppy kinda way (like a umh, umh umh, instead of a smooth ummmmmmh). 3) Also, if I'm driving down the road and come to a light it'll idle high like mentioned in 2), then low, then high... even when I'm driving and am slowing down for a stoplight, if I depress the clutch pedal, it idles high (above 1000) and then after I FINALLY come to a dead stop, it'll drop down, but hten go up then down , etc (as already mentioned) Just to start off with easy things that I know haven't been recently changed anyway, I put in a new fuel filter and spark plug wires (trying to start off with the easy stuff). Could I be losing vacuum somewhere? What is the hose that comes out from the inside of the cavern of the upper intake (directly above the lower intake)? There are 2 hoses. The smaller one on the left (if you are looking at the intake from the front of the car) seems to be old and almost corroded. From the intake, I think it goes to a plastic junction that then goes to that smog canister. It's not easy to get to that's why I haven't changed it yet. Any ideas guys??? I don't really care for a ruff idling car........
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351W-powered 1979 Ford Mustang Ghia notchback '79 Video @ Idle Stock 5.8L under 4" cowl 'glass hood, C4 w/ Transgo shift kit, Holley 750 cfm, Edelbrock Performer RPM intake; Fluidyne Al radiator, Flexalite 175 electric fan, 1 5/8" MAC shorty headers, FRPP Al driveshaft; S&W 6-point cage; 2.5" Off road H-pipe, 2-chamber Flowmasters, 8.8" Rear w/ 3.55s; Weld wheels (15x6;15x8), Front: 225/60/15, Rear: 275/50/15 Nitto NT 555R Drag Radials; 14 x 4” K&N X-stream air filter. '92 GT (5-speed) Small In Car Video Stock 5.0L, 2-chamber Flowmasters, MAC CAI, Tri-Ax, Al pedals... "Red, thou art my companion. Hasten now your quickened metamorphosis to Green that I may conquer all who dare abide there beside me. May they be left thither behind burnt black." ---Fox Body |
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