CaptTightPants
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| Posted: Jul 17 2017 at 5:15am | IP Logged
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I have been scratching my head about this one for a while now. When the
truck is idling it feels like the engine skips a beat which sends a
considerable bump you can feel through the whole truck. I guess you can
call it rough idle, only it doesn't happen all the time. It can idle
fine for five minutes in a row and then start doing it when it would
start stumbling every two or three seconds. It usually gets worse when
the truck worms up. Loading the engine seem to affect it for the worse
as well (putting it in gear, especially turning AC on). However, it
will still do it in park with nothing else on, just not as often. When I
stand in front of the engine and this "stumble" happens I could hear a
click (sounds almost like a relay click) coming from somewhere in the
area of EGR valve. Not sure if it is cause or effect of stumbling
though. When it starts happening while I'm at the light and I start
accelerating, you can feel it through the initial stage of acceleration
as intermittent hesitation. Other than that it feels normal while
driving at higher speeds. I did feel it happen one time going on the
highway though.
Check engine light is off. So far the things I've done are: clean the
throttle body, new air filter, cleaned MAF sensor, cleaned grounding
wire from the battery, ran a bottle of seafoam trough it, changed the
distributor. Nothing seems to affect it. Any ideas what else may be
causing it?
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lakota
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| Posted: Aug 30 2017 at 1:38pm | IP Logged
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..
Check out the firing of the spark plugs and fuel filters.
I doubt it had a carburetor but it sounds like a problem one would likely have.
I don't mess with fuel injection... but I have seen sticky injectors... Some times Lucas cleaner works in the fuel system Sorry
Hope someone else will jump in.. Don S..
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PLEASE >>> A SIG similar to mine can be VERY HELPFUL to all the members!
'99 4x4 3.3 Frontier Se KC Auto, 48,000 miles
'76 4x4 401 Wagoneer QT
'04 FWD 1.8 Sentra '08 FWD 2.4 Camry LE
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Nissan Frontier Forums : Problems / Technical
Topic: 2004 Frontier (VG33 V6 3.3L) idle stumble
