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03-23-2012, 09:32 PM
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Hummer Veteran
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Join Date: Sep 2006
Location: visalia ca./ Wingate N.C.
Posts: 89
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kinda cutting out a 45 mph for a second
Having a problem and doesn't show up on codes. going down the road and all of a sudden it cuts out for a second then drives fine . put new plugs in cap rotor wires . Didn't do nothing still does it . Its a 2003 H2 Does it more when down to 1/4 tank but today did it with 3/4 tank . But it doesn't do it all the time ,thats what so weird . thinking maybe the fuel pump and i did change the filter too! No difference ! Thanks in advance !! jeff
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Put on turn signal count to ten and turn SPLAT!!Goes another tree hugger 
03 H2 Sunburst orange
04 Corvette Silver(wifey's)
32 roadster Viperblue (SOLD)
32 3 window coupe COPPER ( almost done )
32 3 Window Coupe full fenders
32 Roadster
62 Nova SS
69 Chev p/u 427
72 Chev p/u ORANGE
34 Phanton (underconstruction)
34 5 window coupe Teal (SOLD)
95 Harley geiser glide red
74 Sportster {wifey's)Candy red w/flames
96 Harley Turbo charged
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03-23-2012, 10:39 PM
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Hummer Veteran
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Join Date: Jun 2009
Location: Texas
Posts: 122
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Re: kinda cutting out a 45 mph for a second
This made me think of one of my Harleys that would start running rough and cut out when the fuel would get below 3/4. Full tank ran fine, down below 3/4 ran terrible. It was driving me nuts. The Harley shop found that there was a hole in the fuel line in the fuel tank and when it got below 3/4 it was't getting the fuel it needed.
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03-23-2012, 11:39 PM
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Hummer Authority
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Join Date: Sep 2003
Location: Canada
Posts: 1,251
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Re: kinda cutting out a 45 mph for a second
Well if you changed the cap and rotor its not a 6.0l
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1987 Jeep YJ 403hp sbc 653hp on NOS
1998 Chev Z71
2007 Chev Trailblazer SS
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03-24-2012, 12:45 AM
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Hummer Veteran
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Join Date: Sep 2006
Location: visalia ca./ Wingate N.C.
Posts: 89
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Re: kinda cutting out a 45 mph for a second
 Sorry meant wires on coils ! Use to the old hotrods !!!
__________________
Put on turn signal count to ten and turn SPLAT!!Goes another tree hugger
03 H2 Sunburst orange
04 Corvette Silver(wifey's)
32 roadster Viperblue (SOLD)
32 3 window coupe COPPER ( almost done )
32 3 Window Coupe full fenders
32 Roadster
62 Nova SS
69 Chev p/u 427
72 Chev p/u ORANGE
34 Phanton (underconstruction)
34 5 window coupe Teal (SOLD)
95 Harley geiser glide red
74 Sportster {wifey's)Candy red w/flames
96 Harley Turbo charged
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03-24-2012, 12:54 AM
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![[__--MUD--__]'s Avatar](image.php?u=8286&dateline=1300594796) |
Hummer Expert
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Join Date: Dec 2007
Posts: 705
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Re: kinda cutting out a 45 mph for a second
Quote:
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Originally Posted by HUMTECH
Well if you changed the cap and rotor its not a 6.0l
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I was thinking what in the hell kind of line of **** is this guy trying to feed us....LOL
You actually catching the tach drop, or you just noticing by the seat of your pants a momentary loss of power? Flat/level ground when this happens? |
03-24-2012, 03:11 AM
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Hummer Authority
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Join Date: Sep 2003
Location: Canada
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Re: kinda cutting out a 45 mph for a second
Its not the tcc locking and getting a little bump feeling is it?
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1987 Jeep YJ 403hp sbc 653hp on NOS
1998 Chev Z71
2007 Chev Trailblazer SS
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03-24-2012, 03:16 AM
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Hummer Authority
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Join Date: Sep 2003
Location: Canada
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Re: kinda cutting out a 45 mph for a second
One thing that i can think of is check pin grip tension at crank sensor connector, not likely if at a certain speed but who knows. Normally for something like that i would install a data recorder and instruct the customer to hit the button when they feel the problem it would then record data to be looked at by the tech.
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1987 Jeep YJ 403hp sbc 653hp on NOS
1998 Chev Z71
2007 Chev Trailblazer SS
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03-24-2012, 03:18 AM
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Hummer Authority
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Join Date: Sep 2003
Location: Canada
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Re: kinda cutting out a 45 mph for a second
If you can get access to a tech 2 scanner you could take a center triggered snapshot and record data that way. Center trigger will capture data before, during and after event to be compared
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1987 Jeep YJ 403hp sbc 653hp on NOS
1998 Chev Z71
2007 Chev Trailblazer SS
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03-24-2012, 05:40 PM
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Hummer Veteran
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Join Date: Sep 2006
Location: visalia ca./ Wingate N.C.
Posts: 89
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Re: kinda cutting out a 45 mph for a second
It's like it loses ingnition for a spit second today it did it at 25 mph then it goes on like nothing happened ! All gauges and electrical stay the same except the tach drops about 1000 rpm when it happens and its only for a second or two and its over !
__________________
Put on turn signal count to ten and turn SPLAT!!Goes another tree hugger
03 H2 Sunburst orange
04 Corvette Silver(wifey's)
32 roadster Viperblue (SOLD)
32 3 window coupe COPPER ( almost done )
32 3 Window Coupe full fenders
32 Roadster
62 Nova SS
69 Chev p/u 427
72 Chev p/u ORANGE
34 Phanton (underconstruction)
34 5 window coupe Teal (SOLD)
95 Harley geiser glide red
74 Sportster {wifey's)Candy red w/flames
96 Harley Turbo charged
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03-24-2012, 05:43 PM
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Hummer Veteran
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Join Date: Sep 2006
Location: visalia ca./ Wingate N.C.
Posts: 89
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Re: kinda cutting out a 45 mph for a second
Ive had it to a couple shop but they can't find nothing wrong with it and it doesn't do it for them !
__________________
Put on turn signal count to ten and turn SPLAT!!Goes another tree hugger
03 H2 Sunburst orange
04 Corvette Silver(wifey's)
32 roadster Viperblue (SOLD)
32 3 window coupe COPPER ( almost done )
32 3 Window Coupe full fenders
32 Roadster
62 Nova SS
69 Chev p/u 427
72 Chev p/u ORANGE
34 Phanton (underconstruction)
34 5 window coupe Teal (SOLD)
95 Harley geiser glide red
74 Sportster {wifey's)Candy red w/flames
96 Harley Turbo charged
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03-25-2012, 04:28 AM
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Hummer Veteran
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Join Date: Oct 2009
Location: Washington
Posts: 147
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Re: kinda cutting out a 45 mph for a second
Definitely sounds like the tcc culprit
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03-26-2012, 01:57 PM
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Hummer Professional
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Join Date: Nov 2009
Location: Windermere, FL
Posts: 297
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Re: kinda cutting out a 45 mph for a second
I've had this same problem for about the past 6 months. Still haven't figured it out. The old service manager at "Hummer" thinks it's my torque converter, or something else in the transmission. We did all of the normal stuff, such as injector cleaning, etc., but nothing changed. I'm just waiting for something to finally break, then I'll know for sure what it is.
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White 2005 SUT, Lifted 7.5" via Fabtech/custom work, Fabtech Dirt Logic 2.25 shocks, 40x15.5x22 Toyo's, black 22" Fuel wheels, 4.88 gears, Dynatech long tube headers, Magnaflow exhaust, Air-raid intake, Superchips programmer, Edlebrock panhard bar, Cognito UCA's, Kryptonite tie rods, Cognito pitman/idlar arm gussets, Hotchkis swaybars and trailing arms, Amp Research steps, E&G fender flares, PIAA SMR's, smoked roof lights (bulbs removed), black suede headliner, 13" JL's under seat
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03-26-2012, 07:13 PM
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Hummer Expert
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Join Date: Dec 2007
Posts: 705
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Re: kinda cutting out a 45 mph for a second
If you have a little computer and engine knowledge, you can pick up a used data logger pretty cheap...seen them as low as $200.
http://www.hptuners.com/ is a damn nice one...base level is scan only. Would work on that corvette in your sig also. Can be upgraded through software key to program/edit your rides also if you really got into it. |
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