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-   -   High RPMs, slow acceleration (https://blazerforum.com/forum/engine-transmission-35/high-rpms-slow-acceleration-60490/)

hotEFFINmess 06-25-2011 06:51 PM

High RPMs, slow acceleration
 
Hi everyone. I am new to the forums and I need HELP!!!!:icon_doh:

I have a 2000 Blazer and I LOVE it to pieces. I've owned in for just a couple of months. It ran great when I test drove it and for a while since I've had it.

A few weeks ago, I noticed that the get up and go... got up and went.

When I press the gas pedal to accelerate, the RPMs go up really high before the tranny shifts and it accelerates slowly. It's aggravating. I don't know if this is affecting my gas mileage but if it is... AHH!

Can anyone give me an idea of what I can do, change, etc?

I don't know when the last tune up was done but I keep up with oil changes because I drive a lot.

I can turn wrenches somewhat and don't want to have to pay someone a lot of money to fix this if I can do it myself. All help is appreciated!!

Thanks! :)
JiLL:icon_toast:

swartlkk 06-25-2011 07:01 PM

Sounds almost like something in the transmission is slipping. Hows the transmission fluid level & condition?

hotEFFINmess 06-25-2011 07:10 PM

I had my brother check it. The level was good and he said it still looked fine. It wasn't cloudy, murky, dirty or anything.

swartlkk 06-25-2011 07:16 PM

Did he check it with the engine running, transmission in park, with the truck nice and level?

hotEFFINmess 06-25-2011 07:28 PM

Yes, yes and yes.

swartlkk 06-25-2011 07:58 PM

You are probably going to have to take it in and have someone look at the trans fluid pressure. From your description, the engine is working properly, its just that the transmission isn't putting it to the ground. It's possible that the torque converter has failed, but that should be able to be diagnosed by a good transmission tech.

hotEFFINmess 06-25-2011 08:28 PM

Ugh. This is becoming a headache. I guess I can take it to have it looked at on Monday. Gonna have to wait. Thanks for all your help! I was going to try Lucas Transmission Fix but maybe I'll have it looked at first.

xgiovannix12 06-25-2011 08:41 PM

get it checked first thats your best option

chris015 06-26-2011 10:28 PM

Try some lucas. I put some in my dodge that was giving me weird fits and it straightened it out. Just make sure you remove some fluid before adding it. overfilling is as bad as nothing at all.

kristoph30 06-27-2011 03:49 AM

LOL Chris015.....look again, Jill is a lady. Dont worry, I miss details too.

I am not a big fan of snake oil. Putting some magic juice in the trans isnt going to fix 99% of the possible problems.

Get it checked. A little problem becomes a big problem quick!
No codes?
Have you counted the shifts? Make sure it is actually going through all the gears.
When you say the RPM go high before shifting, what RPM does it shift at.
I am really hoping you come back and say you have a code.

Sorry, Its late - my thought are pretty fragmanted.

Good luck!
It might even be something as simple is the clutch fan being locked up.

hotEFFINmess 06-27-2011 05:48 AM

Ok. Here's what happens. If I let it go, it will get up to approximately 4000 RPMs before it shifts. However, when it gets up to 3000 or so, if I let off the gas, it will shift. It takes a while to get to 45 MPH.

I had the codes read and there weren't any.

I'm going to take it to a tranny specialist today to see if they can tell me what's up. Then I may be using some Lucas until I get paid to get it fixed.

samuknow 06-27-2011 11:25 AM

it could be as simple as a trans filter and fluid change. Had an issue with my wifes van, very similar issue and it only had 70k on the clock. The filter and fluid change smoothed it out. it has been great. Get it check and then have the tranny serviced. All you can loose is a little $ for the service.

hotEFFINmess 06-27-2011 11:36 AM

When I went to get gas, I checked the fluid again. It is full and isn't dirty. I made an appointment to have my tranny checked tomorrow! :) Will let you know what I find. Thanks for all your help guys! :)

BaconAZ 07-23-2011 10:09 AM

I have a similar problem with my 2004 4WD Blazer. It’s a strange problem that only occurs in the summer when the ambient temperature gets above 900F or so. I have had transmissions slip in the past ad this doesn’t seem to be your typical transmission slip. When accelerating from a dead stop the vehicle seems to move off of the line and gain speed at a normal rate, but the engine RPMs are disproportionately high. It’s like I’m in “granny gear”. It will run at close to 4000 RPMs until it shifts into second them everything goes back to normal. It only occurs when accelerating from a dead stop in June, July and August when the temperatures in Arizona are rarely below 1000F even at night.
I had the fluid and filter changed but it had no effect. I get no check engine light and it runs through the rest the gears just fine. I am thinking it has something to do with the torque converter but I’m no transmission expert. I am considering installing an aftermarket transmission cooler but that seems more like a Band-Aid than a repair.
Any ideas?

samuknow 07-25-2011 11:59 AM

That could be the torque converter.

renesisspeed 07-25-2011 06:20 PM

@ Bacon & hotEFFIN
Any of this sound familiar? https://blazerforum.com/forum/engine...r-start-61358/


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