Mot 1654 Renault High Quality Info

The Renault Mot. 1654 is a critical engine timing tool used primarily for locking the crankshaft on various Renault engines, particularly those in the K-Series (1.4/1.6 16v) and F-Series (1.8/2.0 16v) families. It ensures the engine remains at Top Dead Center (TDC) during timing belt replacements to prevent catastrophic engine damage. Technical Specifications

8. Frequently Asked Questions (FAQ)

Q: Does MOT 1654 damage my engine?
A: Over time, yes. Chronic overboost can blow intercooler hoses, damage the turbo shaft, or – in extreme cases – bend connecting rods. Don’t ignore it. mot 1654 renault

• “1.9 dCi overboost (P0234) definitive guide” – RenaultForums.co.uk
• “MOT 1654 – Cure without removing turbo” – Planète Renault (French/Google Translate)

Step 4: The Worst Case – Turbo VNT Mechanism On 2.0 dCi engines, code 1654 can point to a stuck variable vane turbo (VNT). This requires turbo removal and cleaning or replacement (£££). The Renault Mot

Fix 2: Replace or Clean the EGR Valve (Diesel)

• Attempt cleaning first: On a 1.5 dCi, a thorough cleaning solves 70% of code 1654 cases. Use a wire brush and carb cleaner to remove all carbon crust from the valve seat and pintle.
• Replacement: If cleaning fails, replace the EGR valve. Bosch and Pierburg supply OEM units. After installation, run the ECU adaptation command.
• Temporary workaround: Some owners install a 10-ohm, 10-watt resistor across the EGR wiring to fool the ECU – We do not recommend this. It is illegal for road use and will cause an MOT emissions failure.

No Load Bearing: Never use the Mot. 1654 to hold the crankshaft while loosening or tightening the crankshaft pulley bolt. The pin will bend or snap inside the block. A separate flywheel locking tool (like Mot. 1677) must be used for high-torque applications. Step 4: The Worst Case – Turbo VNT Mechanism On 2