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My 2002 blazer willnot run over 20 mph. what could be the reason

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Car wont go 30 mph


if when you get to 30 miles per hour the rpms are excessively high then the 3rd gear on you're transmission is out. you can try changing the transmission filter and fluid but most likely will not help and you will have to replace the transmission or have it rebuilt anyways. I'm assuming its an automatic transmit ion and therefore if high rpms at 30 miles per hour its sadly the transmission

Oct 27, 2013 | Chevrolet Blazer Cars & Trucks

1 Answer

Rides loud once you get up to 20 mph sounds like grinding on front passenger side


perform this test, SAFELY! while driving at 20-30 mph lightly pull steering wheel to left, then to right, if sound worsens, then gets better in the other direction, I believe you have a wheel bearing problem. this will be a hub bearing assembly, and is not a difficult repair.

DW Mylin

Nov 27, 2012 | 2002 Chevrolet Blazer

1 Answer

Fluctuating oil pressure on 2002 blazer


do you change oil at recommended intervals when the engine runs at higher RPM's it's normal for oil pressure to increase while driving

Sep 03, 2012 | 2002 Chevrolet Blazer

2 Answers

Loud roaring noise coming from 2000 blazer. It only does it after driving for a few minutes at about 60 mph. After that, it will continue to do so until I shut it off. When I start it up again, it sto


could be a bad pinion bearing or something of that nature
our truck had the same thing happen,it only did it in 2 wheel drive not 4x4.....it was the transfer case

Jan 13, 2012 | 2000 Chevrolet Blazer

1 Answer

I have electrical problem with AC compressor Blazer 2002. Don't run.


If the compressor clutch isn't locking and turning the compressor the first thing to check is the refrigerant level. If the system is low on refrigerant a safety switch opens the clutch circuit and prevents the compressor from running. The reason for this is that the lubricant for the compressor travels through the system with the refrigerant, so if the system is low the compressor can be destroyed from lack of lubrication.

Jul 02, 2011 | 2002 Chevrolet Blazer

3 Answers

2002 lincoln town car wont run over 20 mph and wont rev up the coils have been changed and was not the problem


Sound like a clogged fuel filter this will keep you from going over a certain speed as the flow of gas is not correct

Jun 02, 2009 | 2002 Lincoln Town Car

1 Answer

Transmission problem ?


the very 1st thing to do is have the system tested for trouble codes related to the trans problem, u may have a defective trans shift solenoid.

May 20, 2009 | 2002 Pontiac Grand Am

1 Answer

Blazer runs rough when running at 45 to 55 mph


the problem was low transmission fluid. added half a quart and the problem went away.

Sep 28, 2008 | 2000 Chevrolet Blazer

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