'95 jimmy - lots o probs


69camaroboy
08-29-2004, 11:46 PM
Hey guys... noob here, so bear with me. hehe. Well, i've got a 95 jimmy 4.3 4door with 166k miles on it. Shes a true beast, but shes got some problems i need some help with. I'm only 16, but i do know my cars. My dad and i work on the jimmy when needing repairs, but lately my dad is too busy to bother with it, so i figured i could fix some of the minor stuff.

Feel free to poke at any of these!! Thx in advance!!

Problems:
1. Sputtering - i thought due to the EGR, but that was cleaned, replaced, and cleaned again, but no cheese. It has a rough idle (idle at 500-600 with some small jumps). It used to sputter quite often, but then we changed the EGR and it hasn't done it much at all. Now, God forbid it rain while i'm driving or i'm not getting anywhere. It will "clog" up and sputter with almost no acceleration. This mainly happens if the car has been sitting in rain for a while after being driven. Theres no backfire, no SES light, no codes. When it sputters, it will go up to about 2000 rpms and stay there no matter how hard i drive it... it wont budge. Not good when yielding to highway!! :banghead:

2. Exhaust - I recently replaced the exhaust (muffler & tailpipe) on it because the tail pipe was just hangin there so i ripped it out, and the muffler was basically just a black hole. So, I put on the new muffler and tailpipe in hopes of better performance and of course a quiet ride. It was quite for the first few days, then it is back to where it started (moderately loud). The engine runs smooth and quiet from up front and sides, but when i get to the tailpipe, it sounds like a stinkin harley. I can't find any holes anywhere... everything is fight nice and snug... so i dont know what the problem is. Cat converter? Maybe just a tired engine after 166k miles? Another pipe somewhere i overlooked?

3. Blinker - Just recently (about a month ago), my blinker randomly stops working. It will work 60% of the time, but i know i'm gonna get pulled over when its the other 40% of the time not working. Could this just be a bad switch/contact? I dont wanna take the whole steering wheel apart just to peek at it, so i figured i would ask.

4. Hissing Wheel - my right front wheel gives off a rubbing or hissing noise when driving. It doesn't happen constantly, but pretty often. The brakes have no effect on it, so it probably doesn't involve brakes (new pads though). It sounds like something is rubbing against something; kinda like when you rub a piece of paper on a desk or table. My dad has tried to listen to it, but he can't hear it due to not so good hearing (6 years in a nuclear sub does that to you) so he can't figure out what the problem is. Any ideas?

Again, take a poke at any one of these... any suggestions would help me! I love this car as it is a stinking beast (a few neons/civics found that out the hard way :p)... its been a good car and i hope it will last. It was driven by mother for 9 years and she bought a new Grand Prix (whew! nice car!) and the Jimmy was "given" to me. Thanks in advance... your help is very much appreciated!!

Teaman3
08-30-2004, 04:51 AM
Sputtering

Something is getting wet. Check for water leaking into the engine bay at the back. A hose with a spray setting is useful.

Make sure spark plug ceramic is clean. If you can when the engine is doing this, and it's dark, lift up the hood and see if you can spot any HT leakage (little blue sparks). Make sure the inside of the distributor is free of carbon.

Go round the electrical connectors and clean the contacts. Apply a fine coat of petroleum jelly with a fine paint brush to the contacts. Ensure the connector weather seal in intact.

Exhaust

Something has come loose or there's a hole you haven't spotted. You did use exhaust sealing paste ?

Blinker

I assume you mean either side can stop working. First, try the hazards. If they work, then the circuit fault is localised to the indicator unit. Clean out the bulb sockets and the bulbs to ensure 100% electrical contact. Replace any "blacked" bulbs. Fit a new indicator unit and see what happens.

Hissing wheel

If the noise is still there when you apply the brakes then it may be from the drive shaft boot if you have 4wd. The wheel may be misaligned; uneven tyre wear will indicate this along with a "pull" to one side as you drive.

That kind of noise is usualy associated with a warped disc (rotor) contacting a brake pad as it rotates.

Make sure there are no cables etc nearby that could be dragged over to the wheel by turbulence and rub against it.

69camaroboy
08-30-2004, 11:13 PM
Exhaust

Something has come loose or there's a hole you haven't spotted. You did use exhaust sealing paste ?


Everything sounds fine until i get to the end of the tailpipe. The sound is coming from inside. I can't hear it when i'm not listening to the end of the pipe. It sounds fine when i'm near the muffler & catalytic converter. I was thinking maybe its just a cheap muffler and doesn't "cancel out" high frequency sound because theres no low end to the sound, it just sounds like a high pitched harley lol.

Blinker

I assume you mean either side can stop working. First, try the hazards. If they work, then the circuit fault is localised to the indicator unit. Clean out the bulb sockets and the bulbs to ensure 100% electrical contact. Replace any "blacked" bulbs. Fit a new indicator unit and see what happens.

I will try the hazards next time the blinker doesn't work. I know that its not the bulbs as i can't even tell if they are working or not when i'm driving. When they dont work, this is what happens: I flip the blinker and nothing happens. No clicking, no flashing light on the dash, no nothing. I dont know whether or not the lights are flashing outside though because i'm driving at the time and i can't just jump out and take a peek. The indicator unit would be? And where?



Hissing wheel

If the noise is still there when you apply the brakes then it may be from the drive shaft boot if you have 4wd. The wheel may be misaligned; uneven tyre wear will indicate this along with a "pull" to one side as you drive.
That kind of noise is usualy associated with a warped disc (rotor) contacting a brake pad as it rotates.

That is what i thought the problem was. I recently put in new ball joints (both upper and lower), tie rods (both), brakes and tires, then i got it aligned. The hissing started after all of this. It shouldn't be misaligned because the guy did it twice and we watched him to make sure he did it right... brand new tires... no pull to one side though. I guess it would be the rotor, which was my first guess, but since braking doesn't affect it, i didn't think it was the problem. I do have 4WD, so it may be the Drive shaft boot... how could i find this out?


Thanks for your help!!! Much appreciated. You hit everything right on the dot.

Teaman3
08-30-2004, 11:53 PM
Exhaust

Well, I wouldn't worry too much about the exhaust, it's likely just the design of the thing.

Hissing

You'll have to jack the vehicle up and remove the wheel to check the boots. Any grit/grease caught between the boot walls will make a noise during rotation. While you're there, make sure there are no cables etc rubbing on the inner CV joint.

Swapping the wheels around will determine if it's the tyre or the suspension/shaft assembly.

You're sure you're not attributing an intermittent vacuum leak to the wheel ?

Blinkers

You could always switch them on while parked and have a wander round to check them..........:o)

I do not know the layout of the 95, but I would guess it's worth looking under the dash, driver footwell and the engine bay. Usually there's a small panel embossed with the word "FUSES" which is only obvious when you're two inches from it. Most indicator units are in a round can with three connector blades. There are some that look like relays, but still three bladed. There should be a legend stuck on the back of the panel which will tell you what's where.

69camaroboy
09-01-2004, 06:00 PM
Well, it happened again last night and as i soon as it did, i flipped on the hazards and they worked. The outside lights were working cause it happened at a red light at night so i turned off the headlights and looked to see if i saw the orange ones flashing... and they were. So... what would it be now? No blinker, but hazards & lights work.

Teaman3
09-01-2004, 09:43 PM
Well, it happened again last night and as i soon as it did, i flipped on the hazards and they worked. The outside lights were working cause it happened at a red light at night so i turned off the headlights and looked to see if i saw the orange ones flashing... and they were. So... what would it be now? No blinker, but hazards & lights work.

Ok, so the fault is localised to the indicator unit, the fuse or the indicator switch. You'll have to locate the fuse box. It also holds the indicator unit I believe. The fuse "Turn B/U" 20A is common for the reversing lights.

Teaman3
09-01-2004, 11:37 PM
Is your Jimmy carburettor or injected ?

Teaman3

69camaroboy
09-01-2004, 11:49 PM
alright... i'll have a looksie for the indicator unit.

I'm 95% sure that its injected. Why do you ask?

Teaman3
09-02-2004, 12:16 AM
Hard life eh ? http://www.automotiveforums.com/vbulletin/images/smilies/smokin.gif

Well, the components and circuitry for injected is slightly different to carburated re the sputtering. By the look of things, a carburated engine will more likely have mixture problems than injected.

So you'd better have a peer under the bonnet and work out what's there.http://www.automotiveforums.com/vbulletin/images/smilies/lol2.gif

The one thing you should buy is a repair manual and if you've still got some cash, a digital multimeter. The cheapest place for both is probably Walmart. If you can't get hold of a Chilton repair manual (might be some on Ebay), then a Haynes will do.

69camaroboy
09-02-2004, 08:23 AM
i already have both. :icon16: My dad has every stinking tool you can think of... its ridiculous.

*sigh* Guess i got some work to do...:swear::cya:

Teaman3
09-02-2004, 01:41 PM
i already have both. :icon16: My dad has every stinking tool you can think of... its ridiculous.

*sigh* Guess i got some work to do...:swear::cya:

http://www.automotiveforums.com/vbulletin/images/smilies/lol.gif You certainly have lad http://www.automotiveforums.com/vbulletin/images/smilies/lol.gif

Wait 'til you have to remove the starter motor....http://www.automotiveforums.com/vbulletin/images/smilies/smokin.gif

69camaroboy
09-02-2004, 04:02 PM
Wait 'til you have to remove the starter motor....http://www.automotiveforums.com/vbulletin/images/smilies/smokin.gif

:eek2: :shakehead


I think i'll just let it be with the whole sputtering thing... lol.


Anyways... what does the indicator unit look like?... cause i'm not seeing it. I see 2 silver boxes which i think are fuses, and of course all the other fuses, but i'm not sure i see the indicator unit. I'll look again, but i dont think i saw it.

:crying: dern jimmy!! But i love 'er!

96spyderman
09-02-2004, 06:42 PM
Just curious as to the sputtering... If you have gone through and checked Plugs/Gaps..Wires...Cap....Rotor... and they all look good you might want to try some injector cleaner..I HIGHLY recommend Lucas oil... WWW.LucasOil.com
I used this in my eclipse about 3-4 tanks and my gas mileage went from 18mpg to 23-24 and the idle is super smooooooth now!!!! As for if it's carb or f injected.... I'd hope you would be 100% sure of that... there is a big difference between the two!!! lol anyway... try that cleaner I suggested and I almost garantee!! it will help quite a bit.

Teaman3
09-02-2004, 07:56 PM
:eek2: :shakehead


I think i'll just let it be with the whole sputtering thing... lol.


Anyways... what does the indicator unit look like?... cause i'm not seeing it. I see 2 silver boxes which i think are fuses, and of course all the other fuses, but i'm not sure i see the indicator unit. I'll look again, but i dont think i saw it.

:crying: dern jimmy!! But i love 'er!

Sputtering

Your decision. It won't let go though.

Indicator

Have you checked the fuse ?

Description: See the earlier postings......

Could be one of the silver boxes. What does your manual show ?

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