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2000 Isuzu Rodeo 3.2L V6 2WD ABS light on and pedal pulsates during braking and has activated the ABS while parking

My neice just purchased a 2000 Isuzu Rodeo 3.2L V6 2WD...I already new the problem existed. overall the SUV is great for the age. So, I told her it was a good SUV and we could fix the brakes... I am writing to let everyone know what I did to correct this problem. First,,I noticed the pedal pulsated while I applied the brakes and I could here the squealing coming from the rear drums. After, removing the wheel I noticed when I turned the rotors by hand I could feel a drag on half of the rotor and then it would get easy...needed to be resurfaced...at a machine/tire shop...no problem 15.00 per rotor. After I put them back on, By doing this the pulsating no longer existed when I applied the brakes. felt real smooth. On to the rear drums..I replaced the shoe pads and this corrected the squealing I noticed coming from the rear brakes when I braked going forward only and not in reverse. After, I took the Rodeo for a spin around the block,,,light still came on and the ABS kicked on a few times..I could hear the ABS control module and hydraulic pump making noise while driving. So I started to troubleshoot and I read all three wheel speed sensors. For a 2000 2wd Rodeo there are one on each front wheel and one located on top of the differential spider housing behind the drive shaft. I connected my 30 dollar volt meter that they sell at Auto Zone its called INNOVA, this is a great meter to have because it reads ohms/continuity/ volts.etc.. For OHMS My readings for the front driver side was 2.23 and the front passenger side was 2.25 and the rear was 1.283...Now I went to the junkyard and on three other rodeos I read all sensors again and the front were pretty consistent and the rear sensor had a different reading of 1.253 on two of the Rodeos in the junkyard and the third had the same as I did 1.283...my conclusion was all the sensors were similar and did not have a large difference to cause the ABS light to come on....Good sensor readings. I also read for VOLTAGE at the front sensors only, I turned the rotors at the junkyard on all three rodeos and noticed they all created the same voltage ranging from 300s to 900s depending on how fast you turned the rotors. Did the same voltage test when I got home and got the same results..only small difference was the driver side was a little on the low side. I was able to spin it fast enough to get a voltage reading in the 650s..ok..no problem...So I went ahead and bought a used ABS Control module and hydraulic pump at the junkyard. I went home and replaced the whole unit module and pump and bleed the lines. After turning the key all the lights came on and they all turned off,which is normal,,,but then the ABS light came on right after... this was different now because before the light came on after a 15 minute ride or so...OK....so I turned the car off and tried mulitple times with no luck...So I took the car around the block with the light on and noticed the hydraulic pump not making noise any more like it was before except one initial time which the book says it will do...so the system was working good....Now at this point,,,the ABS light is on and this means the ABS will not come on...ok..So I tested that theory and stomped on the brake to lock up the brakes, which I did...proved my point,,because if the ABS system was working it would of kicked on and the pedal would of pushed back and felt springy and made all the noise it should do...like when you brake on a wet road or snow right...So the brakes are doing what they are supposed to be doing...on to fix the ABS SYSTEM and light....I removed the ABS MODULE on the hydraulic pump..(the electric part of the UNIT).I removed three plugs and 4 screws and seperated it from the Hydraulic Pump...and I replaced it with the original module hoping that one was good from the start. After that, I started the Rodeo and all the lights came on including the ABS light and they all turned off...which is normal...At this point I was waiting for the ABS light to come back on as it did before...never came back on....it was fixed finally...I took it for a ride around town and everything checked out great....I wrote this so everyone could use it...by the way I did not focus on the punctuation and grammer while writing this so no 2 cents..feel free to ask any related questions

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2010 chevy impala service stabilitrakwarning keeps coming on


You should have it check for DTC'S diagnostic trouble codes .
SERVICE STABILITRAK is part of the ABS control module . EBCM - electronic brake control module . Could be a sensor problem , EBCM , yaw sensor an a couple other ones .
Vehicle Stability Enhancement System (VSES)
The vehicle stability enhancement system (VSES) adds an additional level of vehicle control to the electronic brake control module (EBCM).
Yaw rate is the rate of rotation about the vehicle's vertical axis. The lateral accelerometer measures the sideways acceleration of the vehicle. The VSES is activated when the EBCM determines that the desired yaw rate and lateral forces do not match the actual attitude of the vehicle.
The desired attitude of the vehicle are calculated from the following inputs:
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The position of the steering wheel


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The speed of the vehicle


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The lateral, or sideways acceleration of the vehicle


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Yaw rate of the vehicle


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Master cylinder brake pressure

The difference between the desired yaw rate and the actual yaw rate is the yaw rate error, which is a measurement of oversteer or understeer. If the yaw rate error becomes too large, the EBCM attempts to correct the vehicle's yaw motion by applying differential braking to the appropriate wheel. The amount of differential braking applied to the left or right front wheel is based on both the yaw rate error and side slip rate error.
The VSES activations generally occur during aggressive driving, in turns, or on poor road conditions, without much use of the accelerator pedal. When braking during VSES activation, the pedal pulsations feel different than the ABS pedal pulsations. The brake pedal pulsates at a higher frequency during VSES activation.

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My 2003 cts fill like im driving with a flat tire. Then the service stability system light comes on my navigation. How do I now what to fix?


SERVICE STABILITY SYS
Refer to ABS Description and Operation in Antilock Brake System ! You need to take it an have DTC'S diagnostic trouble codes read ! That will point you to a diagnostic path !
Vehicle Stability Enhancement System (VSES)
The vehicle stability enhancement system (VSES) adds an additional level of vehicle control to the electronic brake control module (EBCM).
Yaw rate is the rate of rotation about the vehicle's vertical axis. The VSES is activated when the EBCM determines that the desired yaw rate does not match the actual yaw rate as measured by the yaw rate sensor.
The desired yaw rate is calculated from the following parameters:
?€¢
The position of the steering wheel


?€¢
The speed of the vehicle


?€¢
The lateral, or sideways acceleration of the vehicle

The difference between the desired yaw rate and the actual yaw rate is the yaw rate error, which is a measurement of oversteer or understeer. If the yaw rate error becomes too large, the EBCM attempts to correct the vehicle's yaw motion by applying differential braking to the appropriate wheel. The amount of differential braking applied to the left or right front wheel is based on both the yaw rate error and side slip rate error.
The VSES activations generally occur during aggressive driving, in turns or on bumpy roads without much use of the accelerator pedal. When braking during VSES activation, the pedal pulsations feel different than the ABS pedal pulsations. The brake pedal pulsates at a higher frequency during VSES activation.
If you do not know about this , I suggest you take it to a ASE certified repair shop that does !

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ABS, TRAC OFF, SERVICE VEHICLE SOON LIGHTS ARE ON. BRAKE PEDAL PULSATES INTERMITTENLY AND MAKES NOISE.


with these lights on then you will have to see what codes are in the abs and pcm module to find out what the problems are.the abs module will activate when the traction control lights come on.this can also cause a noise and pulsate in the brakes pedal.

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I have 2000 isuzu rodeo lse replace brake pads and


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1 Answer

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Most likely cause is out of round brake rotors.
They will need to be resurfaced or replaced to correct the pulsation you feel in the pedal.
One other cause I can think of is the ABS (anti lock brake system) is activating due to possibly a bad wheel speed sensor.
You can disconnect the power connector at the ABS control unit and road test the vehicle.
If the pulsation is still there than it is not an ABS problem.

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If it isn't low on brake fluid (which can cause that on some cars) then I would look for a corroded connector at the rear taillights...

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2000 isuzu rodeo brake problems


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There is a switch mounted just above brake pedal, check that it is not sticking when you press pedal.

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