Problem with my 2000 pontiac Bonneville ssei
Mileage = 125000
3.8 series 2
p0102
tech = jk
question = the fist code was bank 1 running to lean changed plugs
wires now this code comes up mass circuit voltage low what could that be.
JK:
You could have a vacuum leak. Suggest checking for that First next, check all
fuses, then check the wires at the MAF sensor connector. Sometimes they break
inside the colored insulation. Pull slightly on each wire at the connector. If a wire is
broken, then the insulation will stretch. This will give the P0102, which may also
have given the lean code.
Back
Mileage = 125000
3.8 series 2
p0102
tech = jk
question = the fist code was bank 1 running to lean changed plugs
wires now this code comes up mass circuit voltage low what could that be.
JK:
You could have a vacuum leak. Suggest checking for that First next, check all
fuses, then check the wires at the MAF sensor connector. Sometimes they break
inside the colored insulation. Pull slightly on each wire at the connector. If a wire is
broken, then the insulation will stretch. This will give the P0102, which may also
have given the lean code.
Back
1998 Pontiac Bonneville SSE.
Engine size: 3.8 L.
Check engine light.
P0300 cylinder 6 misfire.
Replaced Fuel filter, fuel injector, spark plugs, spark plug wires, upper and lower intake manifold gaskets,
ignition coil pack, ignition control module.
What else could be making that cylinder misfire?
With all the parts replaced I have to say that this is not an ignition problem. You need to find out if the PCM
(powertrain control module) is actually controlling the fuel injector allowing it to fire. Each field injector has
one wire that is hot with the key on at all times, usually a pink wire, and the other wire is what the PCM uses
to ground the fuel injector. There is a special injector test light called a "noid" light. You can also use a
normal test light. If the PCM is controlling the injector, then I would have to suspect it is an internal engine
problem. Possibly a broken valve spring or bent pushrod. If there is any engine noise around the cylinder
that is misfiring then that would suggest a mechanical problem as I just mentioned. If there is engine noise
on that cylinder, remove the valve cover and inspect the rocker arm for being loose. You may also want to
do a compression check before you do that.
Engine size: 3.8 L.
Check engine light.
P0300 cylinder 6 misfire.
Replaced Fuel filter, fuel injector, spark plugs, spark plug wires, upper and lower intake manifold gaskets,
ignition coil pack, ignition control module.
What else could be making that cylinder misfire?
With all the parts replaced I have to say that this is not an ignition problem. You need to find out if the PCM
(powertrain control module) is actually controlling the fuel injector allowing it to fire. Each field injector has
one wire that is hot with the key on at all times, usually a pink wire, and the other wire is what the PCM uses
to ground the fuel injector. There is a special injector test light called a "noid" light. You can also use a
normal test light. If the PCM is controlling the injector, then I would have to suspect it is an internal engine
problem. Possibly a broken valve spring or bent pushrod. If there is any engine noise around the cylinder
that is misfiring then that would suggest a mechanical problem as I just mentioned. If there is engine noise
on that cylinder, remove the valve cover and inspect the rocker arm for being loose. You may also want to
do a compression check before you do that.
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