Last post on Apr 30, 2013 at 7:02 AM
You are in the Chevrolet Blazer
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Chevrolet Blazer, SUV
#70 of 192 Re: 2000 Chevy Blazer vibration in my gas pedal [salesatak]
Apr 25, 2007 (3:08 am)
A new distributor should have smoothed out everything but my guess is the rear plastic for the cap screw broke off as thats a common defect on these - then the cap can't be secured back on and a rebuilt fixes that about $75 part.
As for the vibration are you sure its the pedal or are you hearing a buzzing vibration and feeling it in the pedal - look at the PCV on drivers side valve cover and see if the throttle cable is against it - common as the rear plastic push pin breaks off so secure it to the upper intake with a zip tie and fixed. Or replace the PCV if its vibrating still.
#71 of 192 Re: 2000 Chevy Blazer vibration in my gas pedal [repairdog]
Apr 25, 2007 (5:54 am)
Thanx for the input on the distributor, it did even out, as for the "Vibration" The Gas pedal, actually "flutters" or "pulsates" although I will investigate your PVC theory...any other thoughts will be appreciated.....
#72 of 192 Re: 2000 Jimmy 4x4 - clunking while turning right [repairdog]
May 30, 2007 (6:40 am)
I have a clunking noise - well it actually sounds more like metal grinding while I am driving. It stops when I stop and is consistent with noise the time I am driving, it does not get louder at higher speeds. I am not sure what this could be? I heard it might be my cv axle, but is this what it sounds like when it goes out?
#73 of 192 Re: 2000 Jimmy 4x4 - clunking while turning right [mkob]
May 31, 2007 (2:42 am)
It could be brake pads low (chripping or squeeling), calipers sticking, hub bearings (grating sound), CVs (looked for grease and ripped boots), or if just a clunk on suspension travel the lower ball joints. Have to jack it up and test/feel components play.
#74 of 192 Re: 2000 Jimmy 4x4 - clunking while turning right [repairdog]
Jun 05, 2007 (5:46 am)
I know it's not the brake pads, the calipers seemed to be in good shape when I changed the brake pads. The CVs seemed to be in good shape also, it sounded more like the grating sound. As for the hub bearings, what happens if I am unable to change this right away?
#75 of 192 Re: 2000 Jimmy 4x4 - clunking while turning right [mkob]
Jun 05, 2007 (2:21 pm)
They get worse and the hub can wobble if really bad or fail/lockup in extreme failure. Normal is just the grating and loose front end and many drive them like that for some time until they figure out what it is. But you are the one driving it so you have to decide how bad it is.
#76 of 192 98 Blazer/ VERY LOUD noise not yet diagnosed
Aug 13, 2007 (9:39 am)
#77 of 192 98 Blazer/ VERY LOUD noise not yet diagnosed
Aug 09, 2007 (12:58 pm)
I began having a very loud sound after driving 60 mph. It sounded like an 18 wheeler was coming up behind me & had to downshift to avoid colliding. I looked around & didn't see a truck, but pulled off the highway to assess. I drove the distance home without any further incident & since fluid levels checked out & no service panel lights glowed I presumed it had been a truck. I proceeded to drive around on city streets no problem. Then when driving again on the highway about 45 minutes into the drive it happened again. The sound was constant even though I was decelerating & continued until I parked. 45 min. later I get back in & proceed to drive 100 miles on the interstate without the sound . The dealership cannot find a thing wrong. The car only has 55K miles, though almost all of these are in town miles verses highway. Needing to drive again on the highway the sound came back after an hour into the highway drive. IT makes the loud noise but doesn't conflict with performance that I can tell. You do not lose pwer nor any indicator lights blinking. You can continue to drive without incident again once the car has sat for 10 min. or so. A friend diagnosed a bad fan clutch which I propmptly replaced. Thinking my troubles were over I drove the 150 miles home with no problems. Making a return trip, it happens again after 4 hours of highway driving. Now the noise happens sooner than the hour mark, of course it is summer & 95 degrees.The sound tends to diminish greatly when I get up to higher speeds but when accelerating up or decelerating down it gets progressively louder. I have now heard a brief clicking sound in both the extreme right&left in cabin by wheel well. This is making my life miserable especially when the experts cannot diagnose the issue. The U joints were inspected & I've been told it can't be anything electronic or the computer would have flagged it. Any advice at all or similar experience is deeply appreciated.
Margaretanne & Michael in Jefferson City, MO
#78 of 192 Re: 98 Blazer/ VERY LOUD noise not yet diagnosed [troublelight]
Aug 10, 2007 (6:47 am)
Check the muffler carefully. With this many years and these few miles, the internals may have collapsed. Just had a similar thing happen on a '99 with 78K miles. Makes some awful noises, but not all the time. Check to see if there is a lot of discoloration on the body of the muffler, and rusty looking drainage from the weep/drain hole on the back of the muffler.
#79 of 192 Re: 98 Blazer/ VERY LOUD noise not yet diagnosed [jlflemmons]
Aug 10, 2007 (9:53 am)
Interesting, good tip, I will check. Can you describe the awful noise that you were having & was it primarily after running at higher speeds for 30-40 minutes? I say that my noise, which my partner believes is at around 100 decibels, is coming from around the cockpit area & only when wheels are in motion. So glad to have some ideas coming forward. I am at a great disadvantage when several experts have looked it over & can't diagnose. In fact, every thing electronically reads out as tip top shape. Thanks so much for your input jl. Margaretanne McJunkin