What are the symptoms of a faulty hydraulic oil pump solenoid valve?

1 Answers
LaLiam
07/30/25 12:05am
The symptoms of a faulty hydraulic oil pump solenoid valve are: 1. Increased difficulty in throttle control; 2. Surging or lack of response when pressing the accelerator. The hydraulic oil pump serves as the power source in a hydraulic system, including vane pumps, gear pumps, plunger pumps, and screw pumps. The causes of a faulty hydraulic oil pump solenoid valve include: 1. Poor power connection; 2. Power voltage outside the working range; 3. Desoldered coil; 4. Coil short circuit; 5. Inappropriate working pressure difference; 6. Excessive fluid temperature; 7. Contaminants causing the main valve core and moving iron core to jam; 8. Excessive liquid viscosity, high frequency, and end of service life.
Was this review help?
4
1
Share
More Forum Discussions

What tires are used on the Changan CS75?

Changan CS75 is equipped with Yokohama Geoland AR G91 tires. Tires are circular elastic rubber products assembled on various vehicles or machinery for ground rolling contact. As one of the important automotive components, they directly contact the road surface and work together with the vehicle suspension to mitigate impacts during driving. Tire maintenance methods include: 1. Conduct monthly tire inspections; 2. Replace tires when tread wear indicators become visible; 3. Regularly check wheel alignment and balance; 4. Ensure tires on the same axle share identical specifications, structure, brand, and tread pattern during replacement.
9
0
Share

Where to Place the Car Navigation GPS Module?

Car navigation GPS modules should be installed on the glass above the rearview mirror inside the car, which is the optimal position for the GPS module. Below is relevant information about GPS: 1. Introduction: GPS is a high-precision radio navigation positioning system based on artificial Earth satellites, capable of providing accurate geographic location, vehicle speed, and precise time information anywhere in the world and in near-Earth space. 2. Positioning Principle: GPS positioning includes micro-range single-point positioning, carrier phase positioning, and real-time differential positioning. 3. Components: The global positioning system consists of the following three parts: the space segment (GPS satellites), the ground control segment, and the user segment.
16
5
Share

What does a sun with an exclamation mark mean?

A sun with an exclamation mark inside indicates a brake pad malfunction. The relevant explanations are as follows: 1. Working principle: Its working principle is to use the friction between the brake pads and the brake drum, as well as between the tires and the ground, to convert the kinetic energy of the vehicle into heat energy through friction, thereby stopping the vehicle. 2. Brake pad materials include: asbestos, cellulose, sintered glass; carbon fiber friction materials; powder metallurgy friction materials; semi-metallic friction materials. Car owners should note that when opening the engine compartment to check the brake fluid level, they should prevent brake fluid from spilling during the replacement process.
18
3
Share

How to Use the Anti-Skid System?

ESP is usually enabled by default in vehicles and does not require manual operation to activate. Here is relevant information: 1. Function: The disappearance of the dashboard indicator light indicates that the vehicle's ESP is activated. When the vehicle encounters icy or snowy roads or makes emergency turns, this system ensures the vehicle does not move sideways during driving, reducing the impact of road conditions on vehicle movement. 2. ESP: ESP stands for Electronic Stability Program. The ESP system analyzes vehicle driving state information from various sensors and then issues commands to ABS and ASR to help the vehicle maintain dynamic balance.
15
3
Share

Is a Manual Transmission Covered by a C1 Driver's License?

Manual transmission vehicles are covered by a C1 driver's license. The C1 license permits driving small and micro passenger vehicles, light and micro cargo vehicles, as well as light, small, and micro special-purpose vehicles (including all models under C2, C3, and C4). A C2 license only allows driving small and micro automatic transmission passenger vehicles and light and micro automatic transmission cargo vehicles. A driver's license is a legal document required for operating motor vehicles, issued by authorities after the applicant has studied traffic regulations, mastered driving skills, and passed the required tests, legally permitting the holder to drive specific types of motor vehicles.
8
0
Share

What is the difference between Lamando GTS and Lamando?

The main differences between Lamando GTS and Lamando are: 1. Different exterior dimensions. 1. Volkswagen Lamando: Length × Width × Height (mm) 4615 × 1826 × 1425. 2. Lamando GTS: Length × Width × Height (mm) 4610 × 1816 × 1425. 2. Different tire sizes. 1. Volkswagen Lamando: Tire specification 205/60R16. 2. Lamando GTS: Tire specification 225/45R18. 3. Different wheelbases. 1. Volkswagen Lamando: Wheelbase 2656mm. 2. Lamando GTS: Wheelbase 2646mm.
9
3
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.