Pontiac - Grandam :: 2002 - Engine Knocking On Cold Start


Jun 24, 2014

I have a 2002 Pontiac Grand AM GT with 151,000 miles (I have had the car for 6,000). I recently just changed the oil with 5w-30 which is the 3rd oil change I have done and have used the same brand and viscosity. It seems the oil is a little overfilled this time (maybe 1/4-1/3 of an extra quart). I noticed a knocking coming from the engine (closer to bottom of engine than top) on a cold start. It sounds like a rock being knocked against a hard surface. I can only hear the knocking if I am outside of the car, if I am in the car I can't hear it at all. The knocking lasts for maybe 20-30 seconds. If I press the accelerator (when in park) the knocking goes away, and if I let off the accelerator then it comes back. I can't really test to see if the knocking persists while driving since I can't hear it from the cab.

I know I should do all the routine maintenance when getting a used car (spark plugs, etc), but I bought from a friend who put spark plugs on maybe 25,000 miles ago.

I read that maybe I should be using different viscosity of oil in the summer (even though the manual says 5w-30 all year, I live in North Central Nebraska)? Is the knocking maybe due to the slightly overfilled oil? Should I try to drain that excess out? Should I just go ahead and replace the spark plugs and wires as well?

I drive ~750 highway miles a month and hope I can get this car to last a few years. So far it seems pretty good, have only had to change the ECT sensor and thermostat on it, suspension bushings still look good. I just never heard this noise before and it kind of freaked me out. I probably would have never heard it but I just happen to start the car and needed to grab something from the garage.

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I have a '95 pontiac grand AM with about 208,000 miles on it. About a week ago, i noticed it was getting harder to start when the engine is cold. When the engine has warmed up, it starts up right away, however, the engine begins to sputter and sounds as if it is going to die. The engine still sputters while driving and the car begins to jolt back and forth. When I come to a stop, the car sounds as if its going to shut off. Today, I started the car and it was sputtering so I turned it off and then wasn't able to start it for about 40 mins. I let the car sit for about 20 mins and then tried it, started right up. What could be causing the sputtering and engine throbbing? What's wrong?

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Pontiac - Grandam :: 2003 - Turns Over But Won't Start / Service Engine Soon Light Is On

My car won't start and I'm trying to figure out why. What is going on. The kind of car I have:

2003 Pontiac Grand Am
2.2L, In-Line4, VIN(F) DOHC
Has about 160,000 on it

Issue I'm having:

Car turns but won't start
"Service Engine Soon" light is on
Tried to jump it (made sure to let it charge for awhile) to no avail
Was low on gas but was not empty -- we filled it up and it still won't turn
Specifically for this model, it is not the Security Bypass issue (where you reset it after 10 minutes)

Recent work history:

On 2/4/14, I took my car to the shop after the check engine light was blinking when I tried to go above 25mph:

Replaced Spark Plugs
Replaced Air Filter
Replaced Ignition Coil Pack
Replaced Spark Plug Boot (Coil to Plug)
Replaced Ignition Control Module
Replaced Fuel Filter

When I drove my car away, the "Check Engine Light" came on. Took it back, this is what they did:

Access computer for codes : "P0172 system to rich on bank 1"

They told me that there was a possible injector leaking down and recommended a fuel injector cleaning. They said I was ok to drive it for awhile and did not have to do it right that moment.

I did light driving on the car but left it in the burbs as I live in the city. When I moved five months later, I brought the car back to the city. I noticed my air conditioning was not working (will blow heat just fine but will not blow cold).

I changed my oil not long after bringing it to the city, in that same month. Besides the air conditioning, I haven't had any real issues and have done local driving through the city.

I took the car out on Friday, drove to Madison, and drove back the next day with no issues (300m trip). This morning we took the car out to the burbs to visit family (20m) -- now it won't start. What it could be?

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I had the ignition cylinder replaced once, and it took care of the problem for about a year. After it came back, I was told to do exactly the same thing again. At first I decided to punish the dealer by spending another summer loafing in parking lots, but this year I can't take it any more. Should I replace it again? Should a dealer warrant the longevity of the repair?

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Whenever it's cold outside (I live in MN, so it gets really, really cold), my car fills up with a very strong gas odor. It only happens when I am at a stop as well. I have taken it in, and have been told that nothing is wrong. The smell is so strong that I have to roll down the windows and my friends are refusing to ride in my car! I am worried that it's dangerous.

It's a Pontiac Grand Am from 2005. 102,000 miles, roughly.

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Pontiac - Grandam :: 2004 Tries To Turn Over But Won't Start

Have a 2004 Grand am that was having some problems starting:

1) The last 10 times it would start cold, but it would take about 5-10 seconds of turnover before actually starting.
2) After it started, it would start fine the rest of the day.

Now it will not start at all. Today is the coldest day of the year so far... 43 degrees. It tries to turn over. The security light came on once, but did not come on again (i know that's a common problem). (note: I have not seen it in person, but will later today). Either fuel or spark.

My thought: either fuel pump, fuel pump relay, sensor, wires/plugs, etc.

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2004 Pontiac Grand Am GT, 3.4L V6...It only starts if the battery has been disconnected for at least an hour and then is immediately reconnected prior to use. Once the block is hot, however, it starts flawlessly and repeatedly every time. When the block cools, it won't start again unless I disconnect the battery and wait an hour. I did a bunch of tests without first disconnecting the battery: The fuel bar is pressurizing properly, the crankshaft position sensor works, the ignition control module has power, the plugs and wires are in good condition and have the right resistance. The coils are fine.

I did an OBD-II scan as well, no codes. However, unless I go through the disconnect-wait-reconnect procedure, there appears to be only a weak spark. I don't think it's the ignition security feature. There's no security light, performing a security reset does not fix anything, and the car starts repeatedly and reliably as long as the block is hot. I was wondering if it might be a failing sensor that has a thermal dependence? Should I look at the powertrain control module? The ignition control module?

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