Question about 2006 Ford Ranger

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Running lean -

When exelerating up to 40 miles per hour on a cold engine, you go to give it gas and the truck will not exelerate, feels like its in neutral and the truck just coasts. Engine does not die. Pull over to the side, turn the truck off and then back on again the truck does fine. Only on a cold engine it seems to do this. Check engine light is one took to own mechanic and they could not pin point the exact location of problem, did say its show running lean. took to dealership they couldn't pin point problem either but the following codes were detected. PO174, PO300, PO305, P0306. they suggested we do a major tune up with new ignition coil and wires, and that there may be other concerns. We don't have alot of money to put into this truck and don't want to spend money where its not needed. Please Help!

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  • debby_lemire Mar 10, 2009

    thank you so much for getting back to me in such a short period of time. I will look into your suggestions and give you a response back. May not be til end of week, possible after the weekend. Thanks again! :-)

  • debby_lemire Mar 10, 2009

    Nascarschool -- Thats exactly what I suggested my husband to do. Sounds good to me! I just want to get the engine light to shut off, so we can get rid of it. Thats my idea anyway...

  • silver top May 11, 2010

    hi from uk have read the symptoms you describe especially this fault only occures when engine cold ok when warmed up ? may i suggest a couple of diy checks you can do ? there is a air intake temperature sensor on intake after filter check disconnect and clean with wd or ignition sealer/cleaner the plug on wires then refit? it may be this or actual sensor at fault ? next there is also a coolant temp sensor screwed into engine somewhere (not the temp sender unit that works dash guage ) carry out same check/clean as above ? if either of these sensors act up you will have symptom as you have ? however when you stop for a couple of mins ? the engine heat will surge under hood and when restart all ok as coolant and air intake are warmed up assume runs ok rest of day ?? assume the temp guage is rising ok ? meaning the thermostat is working ? hope this helps as both sensors send signal to ecu as regards to their function ?



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Let it warm up first...cheapest way to solve the problem

Posted on Mar 10, 2009


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