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Power loss!!


unclejack's Avatar
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Join Date: Jan 2005
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03-17-05, 03:45 PM   #1  
Power loss!!

Ok, I have a 1987 Dodge D-50 4x4 with the 2.6 Mitsibushi motor in it. Lately my truck has been idling roughly and is very non-responsive at times while driving down the road. Although it idles roughly while it is sitting, it is responsive when I hit the gas?? It's a 5 speed standard and seems to run well in like 1st and 2nd gears?? Only tends to surge in 3rd to 5th gears??? I just tuned it up like 3 months ago and it had ran fine. I originally thought I had some bad gas but apparently not?? I checked all the plugs,wires, cap,rotor, blew out the air cleaner, and checked all vacuum lines but couldn't find anything?? I have never replaced the oxygen sensor or the fuel filter in the last 2.5 years I have had it! Does anyone think either of these might be causing my problem?? Thanks in advance!! Jack


Last edited by unclejack; 03-18-05 at 03:29 PM. Reason: re-list
 
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Desy2820's Avatar
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03-19-05, 11:44 AM   #2  
I would try replacing

the fuel filter. It may not solve the problem, but it won't hurt anything either!

Is the Check Engine light on? I probably wouldn't replace the oxygen sensor unless I had a code or it tested bad.

It sounds like you covered the rest of the bases, maybe check again for vacuum leaks? As a last resort, maybe a fuel pump on it's way out...especially if it's an electric? Try testing fuel pressure/flow, after the filter change.

 
unclejack's Avatar
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03-19-05, 05:19 PM   #3  
Ok, I replaced the oxygen sensor and it seems to run just a little better, but not much! I was also thinking maybe the fuel pump? It has a mechanical fuel pump, so as a last resort I just may replace it! I believe you test the fuel pump with a pressure gauge, right? Still have to replace the fuel filter tomorrow and see what happens! Thanks!!! Jack

 
unclejack's Avatar
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03-20-05, 05:44 PM   #4  
Posted By: unclejack Ok, I replaced the oxygen sensor and it seems to run just a little better, but not much! I was also thinking maybe the fuel pump? It has a mechanical fuel pump, so as a last resort I just may replace it! I believe you test the fuel pump with a pressure gauge, right? Still have to replace the fuel filter tomorrow and see what happens! Thanks!!! Jack
Think I got it finally!! replaced the fuel filter today and seems to be running a lot better, so far anyway!!!

 
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