Quick answer
Car Engine Idle Too High: the most common causes are stuck throttle plate from carbon deposits — plate not fully closing at idle, vacuum leak — unmetered air raising idle rpm, faulty idle air control valve stuck open. Metre Per Second (KPHB, Hyderabad) diagnoses the exact fault and repairs it same-day — typical work runs ₹1,500 – ₹3,000, with free pickup and drop across Hyderabad, OEM-grade parts and a 1-year warranty. Call +91 8555824915.
What causes Car Engine Idle Too High?
These are the faults we most often find behind this symptom on cars driven in Hyderabad's heat and stop-go traffic:
- Stuck throttle plate from carbon deposits — plate not fully closing at idle
- Vacuum leak — unmetered air raising idle RPM
- Faulty idle air control valve stuck open
- Throttle position sensor giving false partial-open reading
- ECU entering high-idle mode from coolant temperature sensor fault
Repairs & indicative pricing (INR)
| Repair | Indicative price |
|---|---|
| Throttle body cleaning | ₹1,500 – ₹3,000 |
| Idle speed recalibration | ₹500 – ₹1,500 |
| Vacuum leak diagnosis | ₹1,000 – ₹2,500 |
| IAC valve replacement | ₹1,500 – ₹4,500 |
| Coolant temp sensor replacement | ₹1,500 – ₹4,000 |
Final price depends on diagnosis. We share a written estimate before any work — no surprises. Free pickup & drop across Hyderabad, OEM-grade parts and a 1-year warranty.
Frequently asked questions
Car idling at 1500–2000 RPM in Hyderabad instead of 700–800 RPM — why?
High idle RPM in Hyderabad is very often throttle body carbon buildup — the throttle plate doesn't fully close because carbon deposits act as a wedge. Throttle body cleaning (₹1,500–₹3,000) almost always resolves this. The second most common cause is a vacuum leak — unmetered air entering the intake raises idle RPM without the ECU controlling it. Smoke test diagnoses vacuum leaks in 30 minutes.
Related car problems we fix in Hyderabad
Why Hyderabad drivers choose Metre Per Second
- Factory-grade diagnostics — we read the real fault, not just a generic code.
- Free pickup & drop across all of Hyderabad — KPHB, Kukatpally, Miyapur, Hitech City, Gachibowli, Banjara Hills, Secunderabad and more.
- 1-year unconditional warranty on parts and labour.
- Transparent, written estimates — typically 30–50% below authorised dealers.