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 FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load

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jhodges
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jhodges

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FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 Empty
PostSubject: Re: FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load   FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 EmptyFri Sep 14, 2007 11:16 am

the '95 uses the paper gasket and the rubber O-ring type gasket that goes around the lip on the edge of thre thermostat. changed mine without any silicone sealed just fine.
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RIVhorsepwr
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RIVhorsepwr

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FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 Empty
PostSubject: Re: FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load   FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 EmptyFri Sep 14, 2007 9:45 pm

I know where the EGR is. Someone said something about cleaning it though and it made me turn my head like a confused dog. Jack I love that intake pipe. Can you give me a item list as to what you used. I like yours better then a few others I have seen. I have seen mostly white PVC piping and they dont look very good to me. Can anyone suggest where I can go to get the codes read?
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jax95riv
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jax95riv

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FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 Empty
PostSubject: Re: FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load   FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 EmptySat Sep 15, 2007 10:40 am

RIVhorsepwr wrote:
I know where the EGR is. Someone said something about cleaning it though and it made me turn my head like a confused dog. Jack I love that intake pipe. Can you give me a item list as to what you used. I like yours better then a few others I have seen. I have seen mostly white PVC piping and they dont look very good to me. Can anyone suggest where I can go to get the codes read?

Thanks. I'm having a new one made from metal, so I'll sell mine when I get the new one made (minus the filter). Mine is the white PVC but I painted it. It looks and works great. I just have some weird hangup about having sewer pipe under the hood. lol There is a thread on the forum that gives all the parts breakdown. It's probably stupid on my part to spend money to get the exact same thing made out of metal, but oh well. As far as the codes, I'm not sure. I have a buddy w/ a garage that I take mine to.
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RIVhorsepwr
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RIVhorsepwr

Name : Erik
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FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 Empty
PostSubject: Re: FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load   FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 EmptyMon Sep 17, 2007 1:02 pm

Got another question......On the series 1 engines, what is that black box behind the engine on the fire wall. To be more specific, if you look at the picture that Jack ohas on this thread, its the black box at the top of the image in the middle.
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oldsman105
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oldsman105

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FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 Empty
PostSubject: Re: FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load   FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 EmptyMon Sep 17, 2007 1:20 pm

vaccum resivour I think?
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Mr.Riviera
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FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 Empty
PostSubject: Re: FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load   FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 EmptyMon Sep 17, 2007 1:43 pm

IDK, the series II has the cruise control box there IIRC.
that kinda looks like a cabin air filter box, but i dont think any of the rivs had a cabin filter.

_________________
1996 with 254k miles, L32 4" FWI -> ported N* -> Ported Gen V w/3.0" Pulley, Stage 3 Phenolic I/C, ZZP FMHE, 1.84 RR, Headers and 3" pipe to mufflers, F-body brakes, and lowered on Eibachs. -RIP
AMG C400 White on black. Stage 2 w/E30 - 11.9@117 -daily
FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 Dsc_0110
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jax95riv
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jax95riv

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FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 Empty
PostSubject: Re: FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load   FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 EmptyMon Sep 17, 2007 6:33 pm

Its a vacuum canister
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RIVhorsepwr
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RIVhorsepwr

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FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 Empty
PostSubject: Re: FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load   FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 EmptyTue Sep 18, 2007 1:15 am

what is its purpose
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jax95riv
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jax95riv

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FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 Empty
PostSubject: Re: FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load   FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 EmptyTue Sep 18, 2007 6:59 am

Not sure but I think it's used for the heat/air.
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Brad95Riv
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FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 Empty
PostSubject: Re: FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load   FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 EmptyWed Oct 10, 2007 5:40 pm

I'm very late to this thread, but if you need the codes read and want to make a trip to Madison, I can help you out. I have a scanner. smile
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RIVhorsepwr
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RIVhorsepwr

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FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 Empty
PostSubject: Re: FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load   FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 EmptyWed Nov 07, 2007 12:31 am

Brad, I wish I knew you like 2-3 weeks ago, I was just out that way. Aroung what part are you located? I was down around Merona. Damn that lake stinks. LOL!!!!!! How well do you know about the 95's?????
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palermocorey90
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FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 Empty
PostSubject: Re: FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load   FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 EmptyWed Nov 07, 2007 6:55 am

thats funny man, cuz this sounds like the same thing thats happening to my car
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ewolfe0050
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ewolfe0050

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FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 Empty
PostSubject: FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load   FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 EmptySun Dec 09, 2007 11:29 am

I need some thoughts..

This morning while returning on a short trip (2mi) I had an issue. Engine was warm, rain was moderate with standing puddles, traction control was off, I was turning left from a stop about 50% throttle. Thru the turn my car hesitated strongly three times. Ordeal lasted 5sec. I immediately looked at the gas guage (3/4 full) when it started to hesitate.

My intake is a custom CAI that is blocked off from the heat of the engine bay and sucks up cold air from the fender. Fuel system was overhauled 2-3 weeks ago. It did not do it again under throttle.

Do you think it's possible I might of sucked up a little water? Do you think it might be a trans isssue? Any chance that the traction control did not fully engage? That's what it felt like but usually I hear a buzzing sound when it does engage. Thoughts??? It is the only time I have had a problem.
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TType_Riviera
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TType_Riviera

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FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 Empty
PostSubject: Re: FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load   FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 EmptySun Dec 09, 2007 11:53 am

even if you turn the TC off it still works,though it might not use the pump to control..i think it pulls timing to interfere with the engine..ive done this before with the TC off...
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AA
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FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 Empty
PostSubject: Re: FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load   FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 EmptySun Dec 09, 2007 12:14 pm

How new are your ignition wires?

_________________
'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30
3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails
KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers
EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch

^^^ SOLD ^^^ frown

'05 GTO • 85k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26
Because fun


'70 Olds Ninety-Eight Holiday Coupe • 116k miles • 455 Rocket V8
Because cool


'95 Celica • 152k miles • 0-60: yes
Because free
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ewolfe0050
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ewolfe0050

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FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 Empty
PostSubject: Re: FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load   FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 EmptySun Dec 09, 2007 1:42 pm

Plug wires are 4mo old...
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Mr.Riviera
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Mr.Riviera

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FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 Empty
PostSubject: Re: FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load   FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 EmptySun Dec 09, 2007 4:41 pm

is the CAI new? or do you have a new K&N filter with lots of oil on it? that can interfere with the MAF readings and cause all kinds of wierd problems.
if its a one time thing, i wouldnt be too woried about it, but if it happens again in dry weather, then worry.
also, do you have a scanner and the ability to check for pending codes?

_________________
1996 with 254k miles, L32 4" FWI -> ported N* -> Ported Gen V w/3.0" Pulley, Stage 3 Phenolic I/C, ZZP FMHE, 1.84 RR, Headers and 3" pipe to mufflers, F-body brakes, and lowered on Eibachs. -RIP
AMG C400 White on black. Stage 2 w/E30 - 11.9@117 -daily
FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 Dsc_0110
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ewolfe0050
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ewolfe0050

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FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 Empty
PostSubject: Re: FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load   FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 EmptySun Dec 09, 2007 7:53 pm

Got a scanner, everything on the engine is 4mo or newer drove the car a little more today and no problems. Thinking it was a little moisture in the intake to cause the stumble.
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Jason
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FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 Empty
PostSubject: Re: FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load   FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 EmptySun Dec 09, 2007 10:46 pm

I get that in the roadmaster with heavy rain. A squirt of wd-40 on around the plugs and everything is groovy.
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albertj
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FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 Empty
PostSubject: Re: FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load   FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 EmptyMon Dec 10, 2007 2:22 am

given your car's age I wonder if it's maybe a fuel pump (wiring) or crank sensor (intermittent warm) issue. I am only guessing though.

Albertj
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BillBoost37
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FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 Empty
PostSubject: Re: FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load   FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 EmptyMon Dec 10, 2007 6:53 am

You mentioned the plugs and wires being pretty new. Do you remember what brands they are and which plugs you used?
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AA
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FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 Empty
PostSubject: Re: FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load   FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 EmptyMon Dec 10, 2007 9:42 am

He's got PRJ wires and Autolite 104 plugs.

_________________
'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30
3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails
KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers
EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch

^^^ SOLD ^^^ frown

'05 GTO • 85k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26
Because fun


'70 Olds Ninety-Eight Holiday Coupe • 116k miles • 455 Rocket V8
Because cool


'95 Celica • 152k miles • 0-60: yes
Because free
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ewolfe0050
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ewolfe0050

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FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 Empty
PostSubject: Re: FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load   FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 EmptyMon Dec 10, 2007 10:22 am

Fuel pump wiring harness is new as well...
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albertj
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FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 Empty
PostSubject: Re: FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load   FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 EmptyMon Dec 10, 2007 4:45 pm

that leaves the crank sensor. When mine started to quit, it would stumble only when fully warm and cruising, and even then just for a moment or two. Neither I nor dealer mechanic could duplicate the problems.

Albertj
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BillBoost37
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FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 Empty
PostSubject: Re: FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load   FAQ: Hesitation, Stutter(Studder), Shudder, Stumbling, on Acceleration/Load - Page 2 EmptyTue Dec 11, 2007 6:23 am

Good description Albert... I used to think of it as a hiccup. Then with scanner hooked up I noticed something interesting. The run time counter would reset when it would stumble/hiccup.

If you have access to a scanner this might be one more possible way to tell.
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