Common questions

What regulates alternator voltage?

What regulates alternator voltage? A VOLTAGE REGULATOR regulates the charging voltage that the alternator produces, keeping it between 13.5 and 14.5 volts to protect the electrical components throughout the vehicle. The alternator is driven by a belt that is powered by the rotation of the engine. What causes an alternator to over charge a battery? Measure voltage across the battery with your DMM. You should get 0.5 to 2 volts higher than base voltage. If you are getting more than 2 volts above base voltage, most likely your alternator is over-charging the battery or the battery is faulty. Other potential...
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What kind of cylinder heads do Chevy performance use?

What kind of cylinder heads do Chevy performance use? Chevrolet Performance Small Block Chevy Cast Iron Vortec Cylinder Heads. America's favorite high-performance cast iron small block cylinder heads offer big power and bigger value. Chevrolet Vortec Cylinder Heads' fast burn combustion chamber and high-velocity ports combine to produce big horsepower. How are new Vortec 350 cylinder heads assembled? Heads are assembled with NEW 2.02 Stainless Steel ONE piece Intake valves Heads are assembled with NEW 1.60 Stainless Steel ONE piece Exhaust valves Heads are assembled with .600 valve springs with hardened valve keepers Heads are assembled with NEW HI TEMP...
Common questions

Why is my chevy 350 not starting?

Why is my chevy 350 not starting? ANSWER. The source of a "cranks, but no start" problem on your Chevy 350 distributor install is most likely incorrect distributor alignment with the harmonic balancer or a mismatched balancer and timing tab. Why does my 350 Chevy truck not start? 350 chevy truck cranks but won't start - Maintenance/Repairs - Car Talk Community Truck ran fine with no indication of problem. When outside temp. dropped in teens one morning it wouldn't start. What to do if your Chevy truck won't crank? Found no spark. Replace HEI distributor and no start. Have replaced...
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Where is the ABS relay in a car?

Where is the ABS relay in a car? If your vehicle is set up like this one, the ABS relay (circled above) is grouped with other electrical components in a sealed compartment. If it's not obvious, you can locate the ABS relay by looking at the new part you just purchased and comparing it to what's in there. Is it time to replace your abs relay controller? If you're haunted by your ABS light and you've narrowed the problem down to the brain that controls your ABS, the ABS relay (or ABS controller), it's time to replace it. You've already...
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How does p1258 Chevrolet engine coolant overtemperature protection work?

How does p1258 Chevrolet engine coolant overtemperature protection work? P1258 CHEVROLET Description In order to reduce the engine temperature the Powertrain Control Module (PCM) has the ability to disable a number of fuel injectors during an engine over temperature condition. The PCM considers the engine over temperature whenever the Engine Coolant Temperature (ECT) reaches a predetermined temperature. What does the p1258 Chevy engine code mean? P1258 CHEVROLET Meaning In order to reduce the engine temperature the Powertrain Control Module (PCM) has the ability to disable a number of fuel injectors during an engine over temperature condition. The PCM considers the...
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What is crankshaft position system variation learn?

What is crankshaft position system variation learn? IMPORTANT: A Crankshaft Position System Variation Learn Procedure must be performed any time a change is made to the crankshaft sensor to crankshaft relationship. Changing the crank sensor to crankshaft relationship will not allow the PCM to detect misfire at all speeds and loads accurately. What is CMP actuator? The CMP actuator solenoid valve controls. the oil pressure that is applied to advance or retard a camshaft. Modifying camshaft timing under. changing engine demand provides better balance between the following performance concerns: • Engine power output. How to relearn GM crankshaft position sensor...
Common questions

Why is my car vibrating all the time?

Why is my car vibrating all the time? There might be a few causes why your entire car (or just speakers) are vibrating. If you notice the vibration while you’re driving the car, the poor road conditions might be the problem. However, if the vehicle is stationary and there’s still vibration, then the problem is much greater, and it’s tied to the car itself. Why does my car make a rattling noise? Well, the main problem lies in the car’s design (not just yours, but anyone else’s). Your car is a metal shell that constantly traps and reverberates sound waves....
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What does the 85 indicate in the fuel designation E85?

What does the 85 indicate in the fuel designation E85? Ethanol fuel mixtures have "E" numbers which describe the percentage of ethanol fuel in the mixture by volume, for example, E85 is 85% anhydrous ethanol and 15% gasoline. What does 85 mean for gas? E85 (or flex fuel) is a term that refers to high-level ethanol-gasoline blends containing 51% to 83% ethanol, depending on geography and season (see Fuel Properties and E85 Flex Fuel Specification). It can be used in flexible fuel vehicles (FFVs), which are available from domestic and foreign automakers. Does my Silverado have flex-fuel? One of the...
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Is the throw out bearing part of the clutch?

Is the throw out bearing part of the clutch? In short, a throw-out bearing is the component of the clutch which temporarily disengages a car's engine from the transmission during gear shifts. When you push the clutch pedal with your foot, the clutch release bearing gets closer to the flywheel. What happens when you press down on the clutch? All the rotational energy created by the engine gets transferred to the wheels through the clutch. If you ever have problems pressing down on the clutch, then you will have problems transferring power to your wheels. This will ultimately result in...
Common questions

What to do if both side of Your Headlights are not working?

What to do if both side of Your Headlights are not working? Neither side works: If both headlights are dead, it’s probably not a problem with the bulbs, but it’s worth a check. The most likely scenario is that the fuse is bad. Remove the fuse for the headlights and check it. When a fuse is bad, it’s obvious because the filament will have a gap in it. Why are the headlights not working on my Chevy? A wiring issue will require a check of wires with a multimeter with the help of your vehicle’s schematics. Only the low-beams or...