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Old 05-20-2011, 20:59   #1 (permalink)
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Question Tell me If I Am Being Realistic

I purchased this 1998 Ranger XLT for 1500.00. I barely got it home and would die when coming to a stop. After running OBD11 I had misfire on cyl 2 & 4. I changed all eight plugs. Cleared codes. No codes but runs rough and still dies. Have since changed the following parts. AIC, TPS, both coils, wires, Injectors, hotter plugs, thermostat, and gaskets. I pulled valve cover and checked for broken valve springs. Cam lobes good. Going to replace Crank sensor. Any more ideas of what to look for that would cause to not run right. Also replaced fuel pump and filters. Would like to drive this Ranger to California and back.
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Old 05-21-2011, 08:09   #2 (permalink)
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Re: Tell me If I Am Being Realistic

Unplug the MAF and see if it runs better. What engine is it?
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Old 05-21-2011, 13:58   #3 (permalink)
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Lightbulb Re: Tell me If I Am Being Realistic

I had unpluged the MAF before and the Truck died. Today I think I found the root of the problem. Ran compression test. #2 cyl had only 25 lbs. Other 3 had 125-140. This is a 2.5 litre. Think maybe have bad head or blown gasket.
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Old 05-21-2011, 18:31   #4 (permalink)
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Re: Tell me If I Am Being Realistic

Sounds like you're on top of it. It may have a burnt valve. Keep us posted.
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Old 05-26-2011, 20:45   #5 (permalink)
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Lightbulb Re: Tell me If I Am Being Realistic

I do believe I found the problem on my 98 Ranger. Pulled head and took it to machine shop that is highly reguarded for their work. Guy showed me the problem. all exhaust valves burnt and seats bad.. Said most likely cause from past experience was fuel. Now I need to clean throttle body and Plenum parts as they have lots of carbon build up in them. What do I use for this? Is the 2.5 not used much. Do not read much online about it from other Ranger owners.
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Old 05-26-2011, 20:54   #6 (permalink)
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Re: Tell me If I Am Being Realistic

For cleaning the throttle body, get some CRC 05078 Throttle Body & Air-Intake Cleaner.

The 2.5 is a great engine. Pretty bullet proof.
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