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

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.

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?

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. 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.

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.

vaccum resivour I think?

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.

Its a vacuum canister

what is its purpose

Not sure but I think it's used for the heat/air.

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.

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?????

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

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.

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...

How new are your ignition wires?

Plug wires are 4mo old...

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?

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.

I get that in the roadmaster with heavy rain. A squirt of wd-40 on around the plugs and everything is groovy.

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

You mentioned the plugs and wires being pretty new. Do you remember what brands they are and which plugs you used?

He's got PRJ wires and Autolite 104 plugs.

Fuel pump wiring harness is new as well...

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

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.