This is topic Need help from fellow San Josenian in forum Tech Talk at Northern California Ford Owners  .


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Posted by BlueLightning302 (Member # 3974) on :
 
basically, the car begins to hesitate when i gas it. it idles perfectly though. it will hesitate even at WOT. not always though sometimes it runs perfectly too. i cleaned out the salt and pepper plugs, the spark plugs are new, changed them twice actually, spark plug wires are perfect (new), new cap (3 different ones), new rotor (2 different ones). I tried a different TFI, same thing. no vacuum leaks. the only codes that come up are the same ones that have that have been there for years (removed smog pump) that have never given me problems. if it were a sensor, what sensors work during WOT? maybe coil? maybe fuel filter? fuel pump? I do have a fuel pressure gauge but its only located under the hood (schrader valve). i was wondering if there were any people in the san jose area with a MAF calibrated to 24#'s that would let me test it out on my car to see how it would run.
 
Posted by JohnB (Member # 969) on :
 
Unplug your MAF, then drive it. Pretty sure that'll solve your problem. Betcha it's dirty. [Smile]
 
Posted by BlueLightning302 (Member # 3974) on :
 
actually i cleaned it because the way it was running and it still did nothing.
 
Posted by TURBOGT (Member # 234) on :
 
i would check your fuel pump, how many miles on it? strainer could be plugged or the pump is dying. Can you check your fuel pressure?
 
Posted by BlueLightning302 (Member # 3974) on :
 
ran a fuel pressure gauge outside, fuel pressure was perfect during hesitation. checked TFI, tested bad so changed that. still hesitating. now what?
 
Posted by TURBOGT (Member # 234) on :
 
maybe a bad throttle position sensor?
 
Posted by BlueLightning302 (Member # 3974) on :
 
TPS voltage sweeps fine. anything else?
 
Posted by DropTopFox (Member # 1689) on :
 
quote:
Originally posted by BlueLightning302:
actually i cleaned it because the way it was running and it still did nothing.
what did you clean it with, that MAF is sensitive as all hell, a little oil/grease anything on it will throw you off big time. [patriot]
 
Posted by BlueLightning302 (Member # 3974) on :
 
i used electrical parts cleaner. any other suggestions guys??
 




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