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Old 05-09-2007, 17:13   #1 (permalink)
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First post - Trouble starting..

Hello all. New member here. My 03 with a 4.6 is having trouble starting. The truck has 57k miles. It takes about 2-3 seconds to turn over and it is a bit quicker if I step on the gas while turning the key. First thought was battery or alternator. Took the battery out and had both tested at Autozone and they are fine. Ran a bottle of fuel injector cleaner through about a week ago with no noticable difference. Have cleared two tanks of gas since it started, so I don't think it's bad gas. About a week into this problem, in addition to the rough starts, I have also noticed a slight bit of sputtering for the first 15-45 seconds the car is running. I'm going to replace the fuel filter tonight. If that doesn't help, I've read that maybe the IAC is going bad. I guess I'll try that next. Any other suggestions?
Thanks in advance.
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Old 05-09-2007, 18:56   #2 (permalink)
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Re: First post - Trouble starting..

Changing the fuel filter makes sense to me. The IAC could be the problem if you have to hold the gas slightly to keep it running.

Tune-up recently? It is due according to age and mileage.
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Old 05-10-2007, 07:58   #3 (permalink)
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confused Re: First post - Trouble starting..

Fuel filter last night didn't really seem to solve the problem (but it looked dirty and it needed it anyway). I asked the dealership about tune up and they said not for 100k miles. The only services they are recommending for 60k are oil change, air / fuel filter, r&b, brakes, coolant and tranny flush. I've done all except the last two myself in the last 10 days. I'm going to try the IAC tonight and see how it goes.
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Old 05-10-2007, 12:16   #4 (permalink)
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Re: First post - Trouble starting..

also, just took it to autozone and it isn't throwing any codes.
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Old 05-12-2007, 05:04   #5 (permalink)
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Re: First post - Trouble starting..

Those plugs can last 100,000 miles, but they are about 5 years old now.
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Old 05-12-2007, 19:10   #6 (permalink)
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Re: First post - Trouble starting..

fair point. I took off the IAC and it looked a little bit gummed up. The piece inside isn't rebounding like the piece on the new on does. I tried cleaning it up and put it back on. It started right the first 2 or 3 cold starts, but now it's giving me a problem cold or warm. Based on that info, do you think I should bite the bullet and put this $90 piece on?
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