1990-1991 Honda Accord Distributor: A Guide to Oil Leaks, Stalling, and No-Start Issues

Symptoms of a Failing Distributor

A failing distributor on a 1990-1991 Accord can cause a range of issues, from subtle to severe. Because the distributor contains the coil, igniter, and sensors, a failure can manifest in several ways.

• Engine Will Not Start: This is the most critical symptom. The engine may crank over perfectly but will not fire up due to a lack of spark. This can be intermittent, happening only when the engine is hot.
• Intermittent Stalling: The car may start and run fine for 10-15 minutes, then suddenly stall once it reaches operating temperature. It may refuse to restart until it has cooled down completely. This often points to a failing igniter or ignition coil inside the distributor.
• Rough Idle and Misfires: The engine may shake, stumble, or run unevenly at idle or during acceleration. This can be caused by a worn distributor cap and rotor, moisture inside the cap, or a failing bearing causing erratic rotor movement.
• Hesitation or Stumbling on Acceleration: When you press the gas, the car may hesitate or feel like it's losing power before picking up speed.
• Loud Squealing or Grinding Noise: A high-pitched squeal or a grinding noise coming from the distributor area is a tell-tale sign of a failed main shaft bearing. If left unchecked, the bearing can disintegrate, sending metal dust throughout the distributor housing.
• Check Engine Light: These Accords are equipped with an early OBD-I system. A failure of the Top-Dead-Center (TDC) sensor inside the distributor can trigger a Check Engine Light with a Code 8.

Known Issues for the 1990-1991 Honda Accord Distributor

This specific distributor is known for a few common "pattern failures" that owners and technicians frequently encounter.

The Internal Oil Seal Leak

This is the most famous problem with these distributors. A small shaft seal deep inside the housing fails, allowing engine oil to seep up the shaft and into the main body of the distributor. When you remove the distributor cap, you will find a coating of engine oil inside. This oil contaminates the electronic components, leading to misfires, erratic behavior, and eventual failure. While the seal itself is inexpensive, replacing it is a labor-intensive process that requires a complete teardown of the distributor.

Main Bearing Failure

The main distributor shaft is supported by a bearing that can wear out over time. The first sign is typically a loud squealing noise. As the bearing wears further, it can cause the shaft to wobble, leading to erratic spark timing. In a catastrophic failure, the bearing disintegrates, filling the distributor with a fine, reddish-brown metal dust, which is essentially rust from the ground-up bearing particles. This will quickly destroy the internal components.

Igniter and Coil Failure

The igniter (Ignition Control Module) and the ignition coil are housed inside the distributor. These electronic components are sensitive to heat. After many years and heat cycles, they can begin to fail, especially when hot. This is the classic cause of a car that runs perfectly when cold but stalls after 15 minutes of driving and won't restart until it cools down.

Buying a Used 1990-1991 Accord Distributor

For this particular part, a high-quality used OEM distributor is often a better choice than a cheap, new aftermarket unit. The original TEC-branded distributors are known for their durability, while some aftermarket versions have a reputation for premature failure of their internal electronics. Here’s what to check before buying a used one.

• Verify the 'TD' Code: Look for a code stamped on the side of the distributor body, such as 'TD-31U' or 'TD-34U'. While these are often interchangeable, the safest bet is to match the code on your original distributor. The key is ensuring it's for the 2.2L F22A engine and has the correct connectors.
• Check for Shaft Play: Grab the distributor drive gear (the part that goes into the engine) and try to wiggle the shaft from side to side. There should be almost no side-to-side play. Any significant wobble indicates a worn bearing, and you should reject the part.
• Inspect for Oil Inside: Ask the seller to remove the distributor cap (held on by three 8mm screws) and check inside. If there is a film of engine oil, the internal seal has failed. While a used distributor with a failed seal can be rebuilt, it adds significant labor. A clean, dry unit is far more valuable.
• Look for Red Dust: A fine reddish-brown dust inside the cap is a dead giveaway that the main bearing has failed. Do not buy a distributor in this condition.
• Inspect the Connectors: Check the two electrical connectors, a 2-pin and a 7-pin rectangular plug. Ensure they are not cracked, corroded, or have any broken wires.

Replacement Overview & Difficulty

Replacing the distributor is a moderately easy job for a DIYer with the right tools, but one step is critical: setting the ignition timing.

1. Mark Everything: Before removing anything, use a paint pen to mark the position of the distributor housing relative to the cylinder head. Also, remove the cap and note the direction the rotor is pointing.
2. Disconnect and Remove: Disconnect the two electrical plugs and the four spark plug wires from the cap. Remove the three 12mm bolts holding the distributor to the head and pull it straight out.
3. Install New Unit: Lightly oil the new O-ring and install the new distributor, making sure the drive tabs engage with the camshaft. Align it with your paint marks.
4. Set Ignition Timing (CRITICAL STEP): This is not optional. You MUST use an automotive timing light to set the ignition timing correctly. Failure to do so can result in poor performance, bad fuel economy, and potential engine damage. The procedure involves jumping a service connector near the ECU and aiming the timing light at the crank pulley.

On a scale of 1 to 5, this job is a 3 for a DIYer due to the requirement of setting ignition timing with a special tool.

Cost Comparison

Prices can vary, but here is a general breakdown of what to expect when purchasing a distributor for a 1990-1991 Accord.

Frequently Asked Questions (FAQ)