☰
GET A QUOTE

Q: High output alternator - What about the voltage regulator?

asked by on February 18, 2017

Hi.

I'm installing a new high output alternator (370a),- rated to 230a at idle, and 370a at 1800rpm. I was wondering if the original voltage regulator is internally installed inside the alternator? If not - will the new alternator need a new voltage regulator to produce it's rated power, and to make it function properly?

If it matters, the van has a big batterybank connected to the "under hood" battery, rated in total to 700ah, so overcharging would not be a problem?

I'm also wondering about how long the original serpentine belt is? The van has A.I.R and A/C.

My car has 70000 miles.
My car has an automatic transmission.

Save Big on Auto Repairs Get a Quote

Hi there. Typically we don’t offer advice on aftermarket component upgrades. In regards to whether the voltage regulator is located inside the new alternator, that depends on the unit. This one for example has it installed inside and does not require an additional unit. In regards to the serpentine belt, I believe the OEM specs are 101’ long by .82’ wide with six ribs.

GMC
V8-5.0L
1989
G2500
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Door will not unlock
Hi. If the door stopped working after it was shut hard, then the door lock actuator rod may have come off of the actuator or the actuator failed. It can also be due to the main switch assembly failing. Both...
Read more
Saturn Ion wont change to 4th gear, its an automatic. The P0700 code comes up saying transaxal module. What does this means?
Hello. The code means there is either an electrical or mechanical (hydraulic) fault in the transmission, or the transmission "controls" and in your case that fault is causing your transmission not to shift. The fault itself can range from the...
Read more
How to reset the ECM?
Hi, thanks for writing in. After the computer is scanned and all the codes are documented and diagnosed to find the cause of the problems then the scan tool can be used to clear the codes and ECM monitors. Once...
Read more
There is no Check Engine Light on but the car is making a lot of noise - it still runs ok
Hello - there are many things in the engine compartment which can cause unsettling noises: accessory belt idler pulley bearing failure, timing chain guide, tensioner or idler wear, valve timing cam actuators, as well as more traditional noises like worn...
Read more
Alternator Pulley came off!!
Hello there, many faults will cause the alternator pulley to fail on your 2003 Volkswagen Golf. When the pulley assembly fails on the alternator it is most often due to a seized alternator bearings. To remedy this issue properly the...
Read more
2012 dodge charger and the service power steering and we cant figure out what's wrong
Hi there. Most of the time when the power steering light is illuminated on the dashboard, it is due to either a fault was found by a sensor or a sensor malfunction. The newer electric power steering systems tend to...
Read more
Makes brake fluid is black
Brake fluid accumulates moisture and contaminants over time (https://www.yourmechanic.com/services/brake-fluid-is-black-or-brown-inspection) and consequently the fluid should be replaced about every 35,000 to 50,000 miles. To service the fluid you can request a brake system flush and refill (https://www.yourmechanic.com/services/brake-system-flush). If you request that...
Read more
Shifter stuck in neutral. Brake pedal stuck. Wont go down. Car sat for 5 years. Rear manifold area very loud exhaust leak. Advice?
Hi there. If the vehicle has sat for an extended period of time, it is likely that multiple components; internal and external have 'frozen' or have lost lubricity and are literally stuck. The clutch and transmission specifically can be negatively...
Read more
I have a 2012 Chrysler 200 when first starting the car the battery light comes on but after I restart it it stays off for the day
Hi Quintina. Thanks for contacting us today. It's quite possible that some of one of the electrical connections or battery cables might be either loose or corroded, causing a poor electrical connection. It could also be a faulty crankshaft or...
Read more

Related articles

2012 Chevrolet Equinox vs. 2012 GMC Terrain: Which One Should I Buy?
The mid-size crossover SUV category offers the comfort and size of an SUV, but on the platform of a car, giving it the look and feel of a large hatchback. The unibody construction typical of passenger vehicles is used instead...
Read more
GMC Certified Pre-Owned (CPO) Car Program
Drivers Drivers in the market for a used GMC vehicle may want to check out cars under their certified pre-owned program. Many manufacturers have a certified pre-owned (CPO) program, and each one is set up differently. Read on to learn...
Read more
How to Get Buick Dealership Certified
GM/Buick car dealerships offer automotive technician jobs to mechanics who are certified through the Universal Technical Institute (UTI) and GM.
Read more

Browse other content

Services
Cities
Cars
Estimates