J R Automotive Repair 97 W. Suffolk Ave

J R Automotive Repair 97 W. Suffolk Ave J R Automotive Service Corp.. been proudly serving Central Islip area since 1959 J R Automotive Service Inc.

Is A Family-Owned Business In the Same Location In Central Islip for Over 60 Years N.Y.S. Inspections brakes Axcel check engine lights, Welding, Appointments Available 631 234 1959

Westhampton was a fun place to go to as a kid :)
04/09/2026

Westhampton was a fun place to go to as a kid :)

I get a laugh out this every year when this car comes in
04/07/2026

I get a laugh out this every year when this car comes in

1909-1911 Brush believed to be "The first auto with coil spring suspension"....The company was founded by Alanson Partri...
03/20/2026

1909-1911 Brush believed to be "The first auto with coil spring suspension"....The company was founded by Alanson Partridge Brush (February 10, 1878, Michigan – March 6, 1952, Michigan). He was a self-taught prolific designer, working with Henry Leland at Oldsmobile, and went on to help design the original one-cylinder Cadillac engine. (Per Wikipedia)

********WE WILL BE ·CLOSED TILL WENSDAY******News 12 Long IslandAmazing totals. As of 7am, Islip Airport 23 inches. 3 in...
02/23/2026

********WE WILL BE ·CLOSED TILL WENSDAY******

News 12 Long Island
Amazing totals. As of 7am, Islip Airport 23 inches. 3 inches per hour, 6 inches in last 2 hours. Top 7th snowstorm, we could become number 1 by this afternoon.

I'm sharing some wisdom with all my fellow machinists today. I used to put a dab of grease on the stem of the rout-a-bur...
09/20/2025

I'm sharing some wisdom with all my fellow machinists today. I used to put a dab of grease on the stem of the rout-a-burr blade to lubricate and help keep a smooth rotation while deburring parts. Now that I'm older and wiser I use Neosporin to lubricate the blade. That way when the end of the blade breaks off and I gash myself wide open I am immediately on my way to recovery. Happy deburring my friends.

This is what we go threw every day :(
08/30/2025

This is what we go threw every day :(

Brake Rotors: What Are They & How Do They Work? Brake rotors, also known as brake discs, come in several types, each des...
08/23/2025

Brake Rotors: What Are They & How Do They Work?

Brake rotors, also known as brake discs, come in several types, each designed with specific performance characteristics in mind. The most common types include blank (or smooth), drilled, slotted, and drilled and slotted. Blank rotors are the standard, smooth option, while drilled and slotted rotors offer enhanced heat dissipation and debris removal for improved braking performance, particularly in demanding driving conditions.
Brake Rotors: Choosing the Right Pattern - Auto Parts Central

Here's a more detailed look:
Blank (Smooth) Rotors:
These are the most basic and common type, featuring a smooth, flat friction surface. They are typically found on most factory-installed (OE) braking systems and offer reliable performance for everyday driving.

Drilled Rotors:
These rotors have holes drilled into the friction surface. The holes help to vent hot gases and water, which can improve braking performance in wet or high-heat conditions. However, drilled rotors may be more prone to cracking under extreme heat, making them less ideal for racing.

Slotted Rotors:
Slotted rotors have grooves or slots machined into the friction surface. These slots help to wipe away brake pad material and debris, leading to more consistent braking performance and preventing glazing of the brake pads. They are also effective at dissipating heat and water.

Drilled and Slotted Rotors:
This type combines the features of both drilled and slotted rotors. They offer the benefits of both venting and debris removal, making them a popular choice for performance driving. However, similar to drilled rotors, they may be more susceptible to cracking under extreme heat.

Vented Rotors:
While not a surface treatment like drilled or slotted, vented rotors have internal vanes that allow air to flow between the two friction surfaces. This significantly improves heat dissipation compared to solid rotors, making them a good choice for daily drivers and vehicles that experience frequent braking.

Composite Rotors:
These rotors utilize multiple materials, often a combination of iron and carbon fiber, to achieve specific performance characteristics. They are typically found in high-performance vehicles and offer reduced weight and enhanced heat management compared to traditional cast iron rotors.

Floating Rotors:
These rotors use a separate carrier (often aluminum) and a friction surface (often steel) that are connected by floating rivets. This design allows the rotor to expand and contract with heat, reducing the risk of warping.

The image illustrates how to test a Crankshaft Position Sensor (CPS), which is a vital component in an internal combusti...
08/12/2025

The image illustrates how to test a Crankshaft Position Sensor (CPS), which is a vital component in an internal combustion engine, monitoring the crankshaft's position and rotational speed. This information is relayed to the Engine Control Unit (ECU) for precise timing of fuel injection and ignition.
How to test the Crankshaft Position Sensor (CPS) using a multimeter:
Connect the multimeter:
As shown in the image, connect the multimeter's probes to the two terminals of the crankshaft position sensor. The red probe should be connected to the positive terminal and the black probe to the negative or ground terminal.
Set the multimeter to resistance (Ohms):
The image displays the multimeter set to measure resistance (Ω), which is the correct setting for this test.
Compare the reading to specifications:
The multimeter in the image shows a reading of 533 Ω. You should compare this reading to the specified resistance range for your vehicle's make and the type of sensor (VR or Hall) using the provided table. For example, a Mazda VR sensor should have a resistance between 400-550 Ohms.
Interpret the results:
If the measured resistance falls within the specified range, the sensor is likely functioning correctly. If the reading is outside the range or shows an open circuit (infinity, indicated by '∞' for Hall sensors in the table), the sensor may be faulty.

Signs of a Bad Oxygen Sensor and Related DTCsYour vehicle’s oxygen sensor plays a crucial role in monitoring and adjusti...
07/02/2025

Signs of a Bad Oxygen Sensor and Related DTCs
Your vehicle’s oxygen sensor plays a crucial role in monitoring and adjusting the air-fuel mixture in your engine. When this sensor malfunctions, it can lead to a variety of problems that can affect your vehicle’s performance and fuel efficiency.
Recognizing the Signs of a Faulty Oxygen Sensor
One of the most common indicators of a faulty oxygen sensor is the illumination of the Check Engine Light (CEL) on your dashboard. This warning light is your vehicle’s way of alerting you to a potential problem that requires attention.
In addition to the CEL, a faulty oxygen sensor can also lead to poor fuel economy. This is because the sensor’s job is to ensure the optimal air-fuel mixture, and when it’s not working properly, the mixture can become too rich or too lean, affecting your gas mileage.
Engine performance issues, such as hesitation, stalling, idling, or lack of power, can also be a sign of a problem with the oxygen sensor. Additionally, a lot of white or black smoke coming from the exhaust can indicate a problem with the air-fuel mixture, which the oxygen sensor is responsible for monitoring and adjusting.
Diagnostic Trouble Codes (DTCs) Related to Oxygen Sensors When a problem arises with an oxygen sensor, your vehicle's onboard computer will generate a Diagnostic Trouble Code (DTC) to help pinpoint the specific problem. Here are some common DTCs associated with oxygen sensor malfunctions:
- P0130: Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 1)
- P0131: Oxygen Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
- P0132: Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 1)
- P0133: Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 1)
- P0134: Oxygen Sensor Circuit No Activity Detected (Bank 1 Sensor 1)
- P0135: Oxygen Sensor Heater Circuit Open (Bank 1 Sensor 1)
- P0136: Oxygen Sensor Heater Control Circuit Open (Bank 1 Sensor 1)
- P0137: Oxygen Sensor Heater Control Circuit Low (Bank 1 Sensor 1)
These DTCs can help pinpoint the specific problem with your oxygen sensor, allowing you or a professional technician to diagnose and address the problem more effectively.

What is the resistance of an injector and what is the coil for?The resistance of an injector is the value in ohms that t...
07/02/2025

What is the resistance of an injector and what is the coil for?
The resistance of an injector is the value in ohms that the internal coil presents to the passage of the electrical current. This coil generates a magnetic field when energized, allowing it to open a valve or lift a needle to inject fuel. If the resistance is out of the manufacturer-specified range, the injector can fail, become open or closed, or even burn the ECU.
Procedure to measure injector resistance in 4 steps:
1. Disconnect the injector from the cable socket
Before performing any measurement, turn off the engine, disconnect the battery and wait for at least 10 minutes. Then disconnect the injector connector. This avoids shortcuts and reading errors caused by other active components.
2. Set up the multimeter on the ohms scale
Place the multimeter on the resistance scale. Make sure the tips are in good condition and perform a continuity test by touching both ends to verify that the equipment measures correctly.
3. Measures between the two injector pins
Place a multimeter tip on each injector connector pin. Never mind the order of the tips. Write down the resistance value that appears on the screen. Compare this value with the recommended vehicle brand ranges.
4. Interpret the result according to range
If the value is out of range (very low or very high), the injector can be short or have the coil open. A short injector usually shows less than 1 ohm, and an open infinity mark or no reading. In both cases, it should be replaced.

Steps to Detect a Power Leak and Avoid Battery Discharge Problems1️⃣ Vehicle PreparationTurn off the engine, remove keys...
02/20/2025

Steps to Detect a Power Leak and Avoid Battery Discharge Problems
1️⃣ Vehicle Preparation
Turn off the engine, remove keys, lock doors, and disconnect any electronic devices.
2️⃣ Set up the Multimeter
Switch to DC mode and select the highest ampere scale for accurate readings.
3️⃣ Disconnect the Negative Battery Cable
Use a wrench to disconnect the negative cable and avoid contact with metal parts.
4️⃣ Connect the Multimeter
Attach black probe to the negative terminal and red probe to the disconnected cable.
5️⃣ Read the Multimeter
Check for current draw. Normal should be under 50 milliamperes—higher means a power leak.
6️⃣ Identify the Problem Circuit
Remove fuses one at a time; a significant drop points to the faulty circuit.
7️⃣ Troubleshoot
Check the faulty circuit for damaged components or loose connections, and repair as needed.

Address

97 W Suffolk Avenue
Central Islip, NY
11722

Opening Hours

Monday 8am - 6pm
Tuesday 8:30am - 7pm
Wednesday 8am - 6pm
Thursday 8:30am - 6pm
Friday 8:30am - 7pm
Saturday 8am - 3pm
Sunday 8am - 3pm

Telephone

+16312341959

Website

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