Hi guys i need some help here getting out of
ideas were to find a problem on my 2001 grand
am, it has a
3.4 engine. When is cold, works
great, but after 10 minutes of driving it begins to
have misfires, the more you drive, more present
is the problem, is difficult to start from a total
stop, but it seems that if you go over 2000 RPMs
the problem goes away and is back after 3500
RPMs.I have done this.
1. Replace
spark plugs
2. Replace fuel press regulator
3. Serviced injector, all were dirty but they just
needed some cleaning. Regards.

Answer:
Sounds like it could be a crank sensor problem.
They usually act up the warmer the engine gets
and will cause a rough idle and hesitation. The
same can be said about the ignition module,
usually runs great cold, then as the engine heats
up it starts to cause misfires when faulty. A bad
coil can do the same thing, but from what you
describe I would lean toward either of the first
two. Most times they will set a trouble code, so if
the check engine light is on, you would need to
get the car scanned and see what code came up
and that would help in diagnosis. Sometimes the
wiring to the crank sensor gets chaffed and
shorts out, causing the issue, so that should be
checked too.

* UPDATE *
I connected snap on scanner and got p0336
CKP 18/24 X out of range, checked and seems
that the damper was replaced. Just an idea, if I
unplug the 24X CKP and let the 7X ( behind the
block) connected to the this, could be the 24X
be shipped using the ignition module to start the
car????Thanks.

Replacing the crank pulley should not have set
any codes. As stated above, check the wires
very closely for that sensor behind the pulley. I
would bet they are partially broken or even
rubbing on the pulley.
2000 Pontiac Grand Am SE. Engine Size : 4 cyl.
Question: whats the usual cost for an
ignition control module for
a 2000 Pontiac grand am SE?

Answer:
Answer: Depending if you get an aftermarket or factory part, you
are looking anywhere from $100 to $200 for the module and
usually about an hour of labor at what ever rate your shop
charges. If possible, I would recommend getting a genuine GM
ignition module for your car. Inferior electronics in aftermarket
parts can fail rather quickly, and leave you stranded or having to
purchase another one. When it comes to replacement parts, you
definitely get what you pay for.
Pontiac Grand Am Ignition Codes for Crank Sensor

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