Common questions

What causes a car to stall after replacing the relay?

What causes a car to stall after replacing the relay?

Replacing the relay usually cures the problem. Another cause of stalling that is often overlooked is bad gas. Moisture sometimes finds its way into underground fuel tanks, and engines don’t run very well on water. Sometimes alcohol additives may not be properly mixed, or may separate from the gasoline in the presence of water.

Why does my PCM stall when I Turn on the engine?

The MAP sensor senses intake vacuum, which the PCM uses to estimate load so it can adjust the air/fuel mixture accordingly. If the MAP sensor isn’t reading right, the PCM will receive bad information and possibly add or subtract more fuel than it should causing the engine to stall.

What causes a car to restart after shutting itself off?

The ignition switch turned out to be the cause or these and other random issues that became a daily occurrence within a few weeks of first incident. Other symptoms were: car would usually restart after shutting itself off, with emission light on and giving codes crankshaft position sensor and camshaft position sensor.

Why does intermittent stalling occur in a car?

One of the more unusual causes of intermittent stalling we’ve heard about is a defective vehicle speed sensor. When the vehicle stops moving, the PCM may not engage the idle speed motor (carbureted engines) or idle air bypass motor (fuel injected engines) so the engine will idle normally.

Why is my 2004 6.0L stalling / dies randomly?

All of these conditions must be met for 5 seconds for the code to be set. This code can also be set if there is ANY condition that would produce low power. Its a late build ’04. The ICP code is probably because I unplugged it to see if it would fix my issue. The P0069 code has been pulled before, its not new along with the current problem.

Why does my car stall after a few miles?

When a bad module is responsible for an intermittent stalling problem, the engine will usually cold start just fine and run OK for short distances, but stalls after driving more than a few miles or when driving at highway speeds (especially during hot weather). It’s as if somebody suddenly turned off the ignition.

Replacing the relay usually cures the problem. Another cause of stalling that is often overlooked is bad gas. Moisture sometimes finds its way into underground fuel tanks, and engines don’t run very well on water. Sometimes alcohol additives may not be properly mixed, or may separate from the gasoline in the presence of water.

The MAP sensor senses intake vacuum, which the PCM uses to estimate load so it can adjust the air/fuel mixture accordingly. If the MAP sensor isn’t reading right, the PCM will receive bad information and possibly add or subtract more fuel than it should causing the engine to stall.

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Ruth Doyle