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Her truck is 1996 4wd Jimmy 4.3L.
Shifts great up and down in every gear, but when doing freeway speeds in
overdrive, if I give it a little gas it'll drop a gear easy, but give it a little to much
gas and it goes into neutral and revs up.
Remove my foot from the gas and it slams hard back into gear and everything
seems fine afterwards.
Tranny Fluid is fresh and is topped up, and was rebuilt about 50,000miles ago
i'm thinkin maybe eletrical issue maybe?
Transmission is downshifting too quick, and holding gear a bit long before shifting. No other problems, just acts like it is mis-reading the speed and load. All shifts are good, drops right into gear, both forward and reverse, no weird noises. Tranny was serviced about 5K ago, no trash in the pan, no burned fluid, all looks good.
I guess the best way to describe what it is doing is it acts like it is in tow-haul mode, even though that isn't an option on this vehicle.
Now, I should point out that this is a Blazer xTreme, and has had the ECM flashed to factory specs. I am told that the xTreme does have different operating parameters than a standard Blazer since it has a lowered suspension, handling package, and high speed rated tires. We also have a '99 standard Blazer, and the drive train definitely behaves more sedately. xTreme editions are very rare in the part of the country, so I cannot find one to compare it to.
Thoughts?
And there is a supply line and a return line that go from the transmission to the radiator and back to provide cooling for the tranny. If you are seeing fluid up near the radiator, one of those lines or the connection to the radiator is bad. Follow the lines all the way to where they connect to the radiator (passengers side, near but below the battery) and you should see the leak.
Kruz
Thanks Greg
Thanks Greg
Based on your description of the symptoms, the first place I would look would be on the MAF connection in the air intake. They would have pulled this apart to check the air filter and may have dislodged the connector.
i read this page of posts, and my car sounds like a combo of everything. I should start from the begining.
i recieved my car as a gift from my father, when he handed it over everything was all right with it i think. he got a 30,000 mile (tuneup?) like thing.
Last year I was driving on the highway. I pulled over to a rest station. When I was leaving I was curious of my 0-60 time. I was rolling at about 10mph and i firmly pedeled to the metal. Ended up blowing up my radiator. Im not sure if it blew up or if it was pierced. Thats all the mechanic said. (This garage was not my regular one) because i had to drive at least 8 miles to this garage. By the time I arrived steam was spewing from the engine. That was a $650 repair. I had to go back because they didnt tighten the new radiator cap, I believe. The total repair time took about a week.
Feb 08 my odometer died. No big deal, just thought id let you know.
The pedal ebrake is also funked up, mainly the release. Everytime I go to the shop it needs to be realligned or something, cuz it always feels different when it leaves. is this normal for an ebrake? this is still happening so any word on that would be great.
also every once and a while i hear this sound which started in fall 08 and happens now and then to this day. i can best describethe sound as the fan it hitting or rubbing on something. this only happens when i accelerate. ive checked and there never seems to be anything in the way of the fan. hmm....
Last March I was driving around on a road about 30 MPH and all of a sudden my dash board lights go crazy, air bag then engine and so on and so forth. my ligghts were dim, i had not lights anywhere but it was during the day so nothing bad happened. I didnt know if i were to stop, i wouldnt be able to go again. so luckily the last stop which was about 3.5 miles away, i parked in. unfortunately it was on, id say, a 45 degree angle with the nose of the car pointing up. My alternator died and i drained the battery dry. It sat for at least a month and a half before the battery and alternator were replaced.
when it was fixed my father picked it up so i didnt talk to the machanic. but my dad informed me of something needing some type of repair, i forget if i was told that the car wouldnt run too much longer before it needs to be repaired. ive kind of dismissed that and didnt recall it until i was writing this.
few weeks ago i purchased some new break pads and rotors for all 4 tires. they were last replaced 3 years prior to this. i also needed a new rear caliper. ebrake felt realligned but expected for this.
now, today i noticed the bulb in the middle of the rear axel seems to be leaking something. im not a 100% sure, but thats the transmission box right? so the sounds im hearing are pinging usually from stopped to 1st gear, and 1st to 2nd sometimes. when i drive i hear a weird squeling that reminds me of driving a manual, and releasing too quickly on the clutch, but you guy the gas not to stall, you feel a jerky and load noise that really doesnt sound good. i get that sound sometimes. tonight as i pulled in to park, it like squeled when i came to a stop. kinda like the subway brakes but not as loud and high pitched.
just to throw out there:
*when i park in my driveway, its usually backed in (so the nose facing down) on a 45 degree angle
*i almost always "back in"
*i dont throw the shift into drive, i go one at a time.
*i usually drive according to the speed limit and im not a bad driver.
when i first got the car i used it a couple of times for off roading.
*i did a figure 8 in a field once, didnt use 4 wheel drive, but it was wet. i skid the whole way so it was good. i dont remember ne thing happening that was bad
*one time when i first started to drive (little more than a yr ago) on accident i took a corner too quickly, i went over like a small yard bolder. 200lbs or so. i drove over it, i forget what weel hit it, but i dont think any prolems began yet.
so wow, thats a lot. i know. but i really want to figure out whats going on here. how have the previous posts' repairs worked out. are things working? anyone tell me anything. i want to know it all haha. explore my possibilties, ya know?
:mad:
About 2 months ago (SE Minnesota, so when cold started) my truck started to lurch steadily between about 1400 and 1800 rpms. It actually 'jumps' about 200rpm whenever in that range and not accelerating. It happens in all gears as far as I can tell (not sure 'all' but I know it happens in upper gears around 45, 55 and 62 mph). Other than this 'lurching' the thing seems to work perfectly. Goes smoothly into every gear, no 'pause' when in drive and getting action to the wheels when I press the gas. Moves in and out of 4wd Hi/Lo and 2wd easily (since I changed out the neutral safety switch a couple years ago). No clunking, hissing, wheezing or anything and I don't smell anything when getting out.
Last weekend I dropped the transmission pan and changed the fluid and filter. The fluid looked in very good condition and didn't see any shavings in the pan. No leakage afterwards (i put a large white piece of construction paper under it for the first three days whenever I parked it after driving it). The lurching was at the same point and the to the same level before and after changing the ATF. I noticed the issue about a week before the SES light came on. I forget the code, but it was something like 'transmission slip' (with two entries). The SES light has NOT come back on since the ATF replacement. It did come on almost immediately (about 30 miles) when I reset it the first time. I've put in about 250 miles since replacing the ATF.
Any other ideas? Is this beast in need of a rebuild or is there something else I should check? Someone on ChevyTalk mentioned that it might be the MAP sensor. I will look to find that this weekend (I'm NOT anywhere close to being a car tech, but I don't mind trying). I read somewhere that it might be a solenoid of some type. Anyone know what it might be called so I can do some more research?
Thanks in advance for any ideas.
he is posted on page 10 it says it is from trackerlady THANK YOU
Are you referring to a differential pressure sensor? Those are used to detect pressure differences between one part of a system and another as in oil or transmission filtration systems.
tidester, host
SUVs and Smart Shopper
One of the issues they both have is with the trans.
While shifting, mostly between second and third or third and fourth, I here an audible bump . I can't feel it, I just hear it. The 98 did it and the 02 does it now. It annoying at times,
Does anyone else expierience this.
Also when shifting from drive to reverse, I feel theres a longer than normal delay. This is also the case in both Blazers.
Hope someone can help!
Thanks