1.9 D / dTi engine (F8Q): faults and reliability

• 1.9 D 55/65 hp (F8Q, naturally aspirated indirect injection, 1988-2006)

  1988–2006 · 55–65 hp · F8Q, F8Q 630, F8Q 632

  With caution

  It is considered very durable (the French Wikipedia speaks of «increvables», practically indestructible, engines), but the reviews repeat the injection pump (21% of opinions) and the cylinder head or its gasket (10-14%): check that both have been serviced or replaced and that there are no coolant leaks.^[2][3][4][7]

• 1.9 TD/dT 90-95 hp (F8Qt, turbo with indirect injection, 1991-2001)

  1991–2001 · 90–95 hp · F8Qt

  With caution

  We have found no reliability data specific to the F8Qt: Fiches-auto barely covers it (2 opinions on the Mégane I). The French Wikipedia describes it as very robust, with units exceeding 300,000 km, but it shares its base with the naturally aspirated F8Q, so the pump, cylinder head and timing belt should be checked.^[1][4]

• 1.9 dTi 80-100 hp (F9Q with mechanical pump, direct injection and turbo, 1997-2002)

  1997–2002 · 80–100 hp · F9Q 710, F9Q 716, F9Q 717, F9Q 780

  With caution

  The entries agree on three weak points: the auxiliary belt (if it frays it can damage the timing belt), the EGR valve, and the turbo or its hose. Out of 213 opinions, the timing belt accounts for 11% of cases and engine failure for 5%.^[4][7][8][9]

Buy: No known serious faults, or they have already been corrected, in this version. With caution: Worth buying if something specific is verified: history, a replaced part or a completed campaign. Avoid: High risk of a serious fault that is hard to check for or prevent.

1. 1High severityFrequency: CommonCylinder head and blockDamaged cylinder head and head gasket (naturally aspirated 1.9 D)The naturally aspirated 1.9 D (F8Q) is known for cylinder head and head gasket problems, especially in its first generation: adding up the Fiches-auto entries, the cylinder head appears in 14% of opinions and the gasket in 10%, and Wikipedia acknowledges it.
2. 2Critical severityFrequency: OccasionalOtherBrake servo vacuum pump: oil suction and loss of assistanceOn Renault 1.9 D cars built up to December 1998, the brake servo vacuum pump could draw engine oil in, and Renault replaced it in a campaign starting in March 1999. The British DVSA recorded another campaign in 2002 for the 1999 and 2000 Volvo S40 and V40 1.9 diesels.
3. 3High severityFrequency: OccasionalTimingAuxiliary and timing belt: breakage that can destroy the engineOn 1.9 diesels the timing belt and the auxiliary belt are a sensitive point: in the dTi entries the timing belt accounts for 11% of cases and engine failure for 5%. Fiches-auto warns that a frayed auxiliary belt can reach the timing belt and damage the engine.
4. 4Medium severityFrequency: CommonInjectionWorn or leaking injection pump (hard starting, smoke)The injection pump is the most frequently cited fault on the naturally aspirated 1.9 D (F8Q): it appears in 39% of the opinions on the 65 hp Clio II, 21% of those on the Kangoo I and 14% of those on the Mégane I. A tired pump causes hard starting and smoke.
5. 5Medium severityFrequency: OccasionalTurboLoss of power from the turbo hose and turbo wear (dTi)On the 1.9 dTi, Caradisiac documents a factory defect: on cars built up to September 2001 the turbo hose can come loose (poorly fixed) and cause a clear loss of power. Fiches-auto also cites the turbo in 6% of the dTi opinions.
6. 6Medium severityFrequency: OccasionalEmissions controlBlocked EGR valve and loss of power (1.9 dTi)The EGR valve gets dirty on the 1.9 dTi: Fiches-auto cites it in 20% of the opinions on the 80 hp Mégane I dTi and 15% of those on the Kangoo I, and the French Wikipedia speaks of rapid fouling on the Clio II. It reduces the air entering the engine and makes it smoke.
7. 7Low severityFrequency: OccasionalLubricationOil sweating and oil leaks on the 1.9 DThe naturally aspirated 1.9 D can sweat oil after 70,000 km, which Caradisiac calls not serious; Fiches-auto records leaks or oil consumption in 11% of the opinions on the Clio II and 9% of those on the Mégane I.

Severity colours: low, medium, high, critical. How we rate them

Manufacturer

Renault

Family

Familia «F» de Renault: F8Q/F8Qt (inyección indirecta) y F9Q dTi (inyección directa con bomba); el F9Q dCi de rampa común está en renault-1-9-dci

Fuel

Diesel

Displacement

1,870 cm³

Cylinders

4

Fuel system

Naturally aspirated

Injection

Indirect injection

Timing

Timing belt (dry)

Power

55–100 hp

Production

1988–2006

Makes

Renault and Volvo

Technical data^[1][5][6]

1. 1988–2006

   1.9 D 55/65 hp (F8Q, naturally aspirated indirect injection, 1988-2006)

   Naturally aspirated indirect-injection diesel with a prechamber: 65 hp as originally built and a 55 hp variant from the 1990s. The French Wikipedia distinguishes a first generation, which carried the weak cylinder head and gasket of the F8M, and a second from the end of 1997 (Kangoo I) which, according to the article, corrected them.^[1][5]

2. 1991–2001

   1.9 TD/dT 90-95 hp (F8Qt, turbo with indirect injection, 1991-2001)

   Turbocharged version of the indirect-injection F8Q: 95 hp DIN according to the French Wikipedia and 90 hp in the German Wikipedia table for the Mégane I. It was fitted to the Mégane I, Scénic I and Volvo S40/V40.^[1][11][12]

3. 1997–2002

   1.9 dTi 80-100 hp (F9Q with mechanical pump, direct injection and turbo, 1997-2002)

   The 1.9 dT moved to direct injection with a mechanical pump in autumn 1997: it is Renault's first direct-injection engine, debuting in the Laguna I (98 hp) and later offered with 80 and 100 hp in the Mégane I, Scénic I, Clio II and Kangoo I. It was eventually replaced by the common-rail 1.9 dCi, which has its own entry.^{[1][6][13][14][15]}

• Timing kit

  • Buy part at Autodoc (affiliate link, opens in a new tab)

• Oil filter

  • Buy part at Autodoc (affiliate link, opens in a new tab)

• Air filter

  • Buy part at Autodoc (affiliate link, opens in a new tab)

• Diesel fuel filter

  • Buy part at Autodoc (affiliate link, opens in a new tab)

• Glow plugs

  • Buy part at Autodoc (affiliate link, opens in a new tab)