Intermittant difficult starting/poor milage
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Junior User
Joined: Dec 2003
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From: Valley Forge, PA
Intermittant difficult starting/poor milage
Hi All. Don't know if these two are related but I could use some insight. A few months ago the gas milage on my '02 Sport Trac RWD dropped significantly. Used to get 17/24 if I'd drive like grandpa Moses but now it's like 13/17. Have 106k on it. Changed the plugs and wires around 90k. Last week starting became really drawn out, like 5 full seconds or more. It seems to run perfectly normal otherwise. No CEL to indicate any problems. Not really sure where to start. What's the life of a cat converter? Any reason to suspect them? Was thinking of pulling the throttle body to see if it's gunked up but I did that last summer and cleaned it. Any help is appreciated.
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Junior User
Joined: Dec 2003
Posts: 93
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From: Valley Forge, PA
Interesting. I would have thought there would be adverse effects at all ranges, especially at high speeds if there was a filter issue. Good call though. I'm way overdue for a fuel filter.
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Junior User
Joined: Dec 2003
Posts: 93
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From: Valley Forge, PA
Yes, he did say pressure and I missed that since I was already reading some information on-line about clogged filters. Do the scan tools that parts places do for you free give the pressure readout? What about vacuum? Truck seems to be running okay and actually the gas mileage seems to be up a bit since the last fill. Still have to get to the filter. Starting has been a bit better too but still not right.
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Immortal_Ben
1987 - 1996 F150 & Larger F-Series Trucks
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Mar 6, 2013 01:28 PM
