1734350070 Toyota HOSE, NO.3(FOR IDLE-UP), Price: 44.57$, Weight: 0.145kg
| Make | Number | Name | Availability | Weight, kg | Ship in, Days | Price |
|---|---|---|---|---|---|---|
Toyota |
1734350070 |
HOSE, NO.3(FOR IDLE-UP) |
0 |
0.145 |
|
44.57$ |
| Not Available | ||||||
Originals
| Make | Number | Name | Availability | Weight, kg | Processing, days | Price | |
|---|---|---|---|---|---|---|---|
| Toyota |
HOSE, NO.3(FOR IDLE-UP)
|
1 |
0.167
|
2-3
|
39.76$
|
Compatibility
| Description | Model | Options | Prod Period | Diagram |
|---|---|---|---|---|
| UCF2# | UCF21-AEAQK | Grade: C TYPE; Gear Shift Type: ATM, 5-SPEED FLOOR SHIFT; Engine: (1UZFE) 4000CC 32-VALVE DOHC EFI | 07.1997 - 08.2000 | View |
| Description | Model | Options | Prod Period | Diagram |
|---|---|---|---|---|
| GS171,JKS175,JZS17#,UZS17# | UZS175-CEAQK | ATM,MTM: AUTOMATIC TRANSMISSION; Body: SEDAN; Grade: A TYPE; Fuel Induction: HIGH EFFICIENCY TWIN CAM; Gear Shift Type: ATM, 5-SPEED FLOOR SHIFT; Engine: (1UZFE) 4000CC 32-VALVE DOHC EFI | 09.1999 - 06.2004 | View |
Idle-Up Vacuum Hose (No.3) for Toyota/Lexus ?
This small rubber vacuum hose is a key link in the engine idle-up system. It is needed to route controlled vacuum/air signal between the idle-up control circuit and related actuators, helping the engine keep a steady idle when extra load appears (A/C on, power steering load, cold start). Even though it looks simple, it prevents hesitation and stalling during low RPM operation.
How It Works ✅
The hose carries vacuum from one port to another, allowing the idle-up valve or control unit to react quickly. When vacuum is stable and leak-free, the ECU and idle-up components can raise idle speed smoothly, keeping the engine from dipping too low.
When the Hose Is Cracked or Leaking ⚠️
If the hose is split, hard, loose, or collapsing, it creates a vacuum leak. That can cause rough idle, hunting RPM, stalling at stops, weak idle-up response with A/C, higher fuel use, and possible lean-mixture fault codes. Prolonged leaks may also stress the throttle body and idle control parts.
Compatibility
- Lexus LX470