Question about Cars & Trucks
What happens when abs pump goes bad on 1992 chevy silverado
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Posted on Jan 02, 2017
you could put the pickup on a cylinder pressure test and see if you have a bad valve causing the engine to pop.
you could have a bad wire or spark plug.
the timming chain could of went off a cog on the timming sprokets causing to pop.
gettin to much gas could cause it to.
Posted on Jan 23, 2009
SOURCE: 1992 chevy silverado 1500 ,
If you turn the key and nothing happens, and you bought a new starter and nothing happens (you just wasted $80 or more) check the starter relay by taking a screw driver and touching both the posts at the same time with the screw driver. but first turn your key to the run position (or the click before you would hold it to start) then touch the realy with the screwdriver. to find the relay first follow the positive (red,or "hot") battery cable to a little box type thing probably mounted to the inside of the quarter panel on which side you battery is if still nothing somethings wrong if it starts well you know what it is then go to the parts store and pick one up.
Posted on Apr 19, 2010
SOURCE: abs activates just before truck
This is a condition known as over active ABS. GM has a technical service bulletin for this. Basically what it say is to remove the front wheel speed sensors from the hubs, clean the mating surface between the sensor and the hub, apply some di-electric grease over the cleaned area, and reinstall the sensor.
You can try this on the front sensors and see if the problem goes away. I will warn you that you need to be very careful removing the sensor from the hub as they can break off. If it breaks off in the hub you will need to replace the hub and bearing.
You can also check to see if one of the front wheel bearings is loose. with the tire off the ground grab the tire at the 12 and 6 position and push/pull. if the wheel moves and you can see the rotor moving also than the wheel bearing may be sloppy enough for internal exciter ring to get an excessive gap from the abs sensor.
The easiest thing to do is look at wheel speed data on a higher end scan tool. When the symptom happens you will see the wheel speed drop out. Whatever wheel drops out is the wheel that needs to be checked.
Hope that helps.
Posted on Oct 01, 2010
Check your MAP and TP sensors. Your throttle body may be having trouble determining position and is compensating by adjusting RPMs.
Posted on Nov 30, 2010
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