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Comments
car has over 250,000 kms on it
The cat conv has an external heat shied that is often the rattle source - also could be inside so hit/tap it with a rubber hammer and see - could be a muffler with the internal buffles failed, or a hanger, or an O2 sensor rattle so listen and tap the pipe front to rear to really pinpoint. With that mileage and a Blazer could be from a hundred places!
Thanks again.
Any one have any answers or suggestions, what it could be?
I want to like this car but I have already had other unrelated problems with this Blazer and I am getting frustrated.
I am in the market for a well-used GMC JIMMY. I found one with 220,000 miles on it and the owner is willing to sell it for $400.00. The truck was a one owner. I drove it and engaged the 4WD on wet pavement. It engaged, but seemed to vibrate and resist, however it did drive and I was going about 30 mph. The owner said that it was just the fact that the 4WD was engaged when there wasn't snow on the ground. He explained that all the tires are "fighting" for ground.
My question is, should I be concerned with the vibration?
Thanks for the reply!
That is a money pit - remember this later and you better be a good mechanic! The whole drivetrain is probably pretty loose and the bearings, CV axles, diff, transfer etc may have lots of wear so hard to say. But if you drive and you go slowly straight ahead it should not hop until you turn and then the front vs rear may hop alittle. Vibration could be many things and most probably is on this.
If the 2.8 they had a choke problem that caused this. Could also be a coil overheating due to the ign module not shutting the voltage completely off. Let me know details.
it runs grate other then that
Leaking CPI regulator and hoses/fuel lines (called a nut kit by GM) under the upper intake manifold. You can remove the IMTV (Intake Manifold Tuning Valve) from intake manifold. Once the IMTV unit is removed, visually inspect the inside of intake manifold. The manifold and injector unit should be very carboned up and dirty. Any clean areas indicate a fuel leak internal to the manifold plenum. Most times this is caused by the fuel pressure regulator leaking fuel from vent hole in the regulator body. Other factors may be present (such as a cracked inlet fuel line) but usually the regulator unit has failed. If no leak is detected through the IMTV hole, but a faulty unit is still suspected then you must pull the upper plenum to get a full view of the inside of the intake.
CPI was used until 96 when the newer spider type injection was introduced that has its own problems. Good luck.
take your foot off the accelerator. trans shifts smmoth. would
appreciate any help vol
Thanks,
Tim
Anybody know where the test wire is located? Your help is greatly appreciated.
lower 79 ft-lbs
upper 61 ft-lbs
Thats for 4wd (and 2wd 95up)
Here's a bit more info on my Blazer I forgot to include: 4.3L v6 engine with model 220 TBI. I've not tested the relay. Fuses are both good.
Any idea where the test connector is? Or, can I patch into the red wire coming from the fuel relay?
Thanks again.
First off, my passenger tire on the inside seems to be coupling i think it's called. It was low on air so i put some air in it. It doesn't seem to be doing it anymore, or if it is, it doesn't seem to be wearing the tread away as fast. What would cause it to do that if anyone knows?
Second, I've been blowing though the fuel pretty fast lately. What should i start to look at for cleaning or replacing to get a handle on this problem. A full tank of gas costs me 46 bucks and i only get close to 300 kms off of it. :mad:
If anyone could help me find some answers to my problems it'd be very helpful.
Thank you
Chris in saskatoon
As for the tune up part, no major tuneup has been done on the truck. When i bought it i was told she was all cleaned up and tuned up and ready to rock. I think all they did was change the oil to tell you the truth. I've only owned it for 3 months, if that. But it's nice to know what to start with to improve the gas consumption.
Thanks for your reply, very helpful.
First off, should my coolent be up to at least the cold line? Or for this winter, should it be up to the hot? Power steering was good, brake fluid was good, air filter is very dirty, spark plugs and wires well have to wait to next payday regardless if there dirty or not, these things have a pcv filter or not? Never found it but well look into that. I started that far and got a far ways to go i know.
Shes got over 200 thousand k on it. I got it only because of my credit situation, but it doesn't leak a drop of oil or burn, runs perfect until it got really poor gas, but all in all has been very good to me. Perfect inside and out and when the time comes the place where i got it from well finance me for any and all repairs which is another thing thats very helpful.
Repair dog thanks for all of your help, it's but the most helpful. I am getting most things covered, but money always comes into the picture.