Question about 2000 Chevrolet Silverado

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I have a 2000 chevy blazer with a 4.3 vortec motor,my problem is when i'm cruising at a steady speed the engine surges it usually happens around 45-50 mph

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ENGINE SURGING COULD BE WEAK FUEL PUMP, STOPPED UP FUEL FILTER,BAD TORQUE CONVERTER SOLENOID OR TORQUE CONVERTER. OR FAULTY TPS.

Posted on Dec 30, 2010

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00 chev silverado 4.3, 5 speed 4x4 runs very good but, after you shift and give it gas you feel a little surging mostly in 3-5 gear . Has new tuneup and gas filter. No engine light is on. has low miles on truck. and starts good and idles perfect.

Posted on May 08, 2011

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1 Answer

I have a 07 grizzly 700 4x4,when cruising at a steady speed you feel the bike surge,the faster you go the faster it surges,what could cause this?


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I have a 02 blazer i want to put a motor out of a 98 in it will it interchange


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I have a 2003 Chevy blazer with a 4.3 vortec motor it has a small leaking head gasket how long can I drive it until I have the money to fix it.


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Dec 28, 2015 | Cars & Trucks

1 Answer

1999 Silverado has an engine surge of 200-500 RPM at 45 to 55 MPH


sounds a little like a cruise control problem.
they used to have a centering adjustment that kept the speed within a range. If the range somehow shifted to the high end this would cause your surge. it would be a screwdriver slot on the outside of the case.cw increase ccw decrease. yours is set too high or cw.
I work the screw back and forth several times in case dirt entered the cruise module.

Jan 30, 2013 | 1999 Chevrolet Silverado 1500

1 Answer

Can I replace my 1996 Chevy Blazer's Engine with a 2005 Chevy Blazer Engine? They are both 4.3L Vortec Engines.


you can,,BUT you're gonna have to replace the intake and a whole lot of stuff on the motor you're installing, most things will interchange from old motor BUT not all. you will have to buy all the other stuff, either new or used,,,but it is possible!

Sep 16, 2010 | 1996 Chevrolet Blazer

3 Answers

What years 4.3 vortec will fit in my 2000 Chevy Blazer? Thanks!


The years of 1996 to 2002 with the engine code L35. Just becareful that the year 2002 is the change over year from L35 to LU3. The L35 fuel system is the SCPI (Sequential Central Port Injection)  The LU3 fuel system is the MPFI (Muilti Port Fuel Injection)
Good luck and hope this Helps.

Jul 20, 2009 | 2000 Chevrolet Blazer

1 Answer

I have a 1988 Chevy C3500 1 ton PU. Engine runs great at idle and acceleration but when cruising it runs rough or surges.


if the truck has a locking converter goin bad it will surge at steady speeds such as 55 mph the converter will lock and unlock causing you to feel an surging

Mar 07, 2009 | 1988 Chevrolet C3500

1 Answer

2000 chevy blazer starting issues


swng,
1) Is the service engine soon light ever on when engine is running?
2) Per your description I would look at the ECT sending unit. It sends coolant temperature information the the Engine Control Module for proper fuel delivery for cold engine start. It may have lost its calibration.
Let me know.
Regards,

Feb 24, 2009 | 2001 Chevrolet Blazer

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