Still rev limiter problem after timing belt change

PAULY1028

MEMBER
2006 CHRYSLER PACIFICA
3.5L
V6
4WD
AUTOMATIC
200,000 MILES

The car acted like it was running out of gas one day and then wouldn't start but had half a tank. So something was wrong. We put new crank sensor, cam sensor, water pump, timing belt. My mechanic friend says it is probably the flexplate. Being that we put new timing parts and stuff, do you have to relearn the PCM?

1 Reply

JACOBANDNICKOLAS

MECHANIC
109,709 POSTS

Hi,

The replacement of the timing doesn't require a relearn procedure to be done.

Since it won't start, I need you to check for spark and fuel to the engine. If the timing was done correctly when the new one was installed, chances are either spark or fuel is missing.

First, take a look through this link. It explains the most common causes of a crank no start condition.

https://www.2carpros.com/articles/car-cranks-but-wont-start

Now, the easiest thing to do is check to see if it will start using starting fluid. If it does and then stalls, we know it is a fuel-related issue. If it makes no difference, then it is likely ignition-related.

Or, here are two links. They explain how to check fuel pressure and for ignition spark.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

https://www.2carpros.com/articles/how-to-test-an-ignition-system

I need to know which is missing. If it is spark, then it could be related to the flexplate simply because the crankshaft position sensor uses it to determine ignition spark timing.

Let me know what you find or if you have other questions.

Take care,
Joe