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Car doesn't want to start

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Old Mar 24, 2009 | 07:50 AM
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Default Car doesn't want to start

When I try to start my car sometimes it doesn't want to start. It just cranks. Then after a few time of that it will start. Or sometimes it starts right up. Any ideas?

It seems like it started this after a Racetronix fuel pump install. It has been like that for a few months.
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Old Mar 24, 2009 | 09:02 AM
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are you letting the fuel pump prime before you crank or just cranking right when the key goes in
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Old Mar 24, 2009 | 09:58 AM
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My Formula did that a few years ago, I had to replace my crank sensor.
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Old Mar 24, 2009 | 10:53 AM
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Is the SES light on? Usually, the crank sensor will throw a code. Also, see if you can hear the fuel pump turn on with the key.
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Old Mar 24, 2009 | 12:14 PM
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Check your fuel filter... Have you replaced it yet?
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Old Mar 24, 2009 | 12:34 PM
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I let the fuel pump run before I try to start it. I put the key in, wait a second until the pump turns off then start it. Fuel filter is the one of the things im thinking also. I will have to change it.

No SES light on.
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Old Apr 24, 2009 | 11:35 AM
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guys i still need help. I changed the fuel filter and still same problem. I even took off my timing tuner for nitrous. I thought maybe it was bad. Nothing.

There are times where it will start on the first try no problem. Then other times it doesnt want to start at all.

New pump
New filter
No ses on
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Old Apr 24, 2009 | 11:53 AM
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I had similar issues, the car 'd start, idle and then die.

Eventually not starting at all.

I 'd say check the coilpacks, Ignition control module and like someone suggested the crank sensor.

It won't throw a code sometimes but still can be bad or going bad.
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Old Apr 24, 2009 | 12:19 PM
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how can you check the crank sensor? Just replace it? I bought one and have it so i guess ill just have to change it
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Old Apr 24, 2009 | 06:38 PM
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Replace your igniton relay, I just had that problem.

Swap your fan relay with it, if it starts after that, and several times in a row, replace the relay. This has happened twice to me.

Cam and crank sensors rarely fail, start with the easy stuff first.
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Old Apr 25, 2009 | 08:08 AM
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Ok. Dumb question but where is the ignition relay? Is it under the hood? I looked in the fuse box under the hood. There are three relays but it say fan#1 fan#2 fan#3. Is there another place?
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Old Apr 25, 2009 | 08:57 AM
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You put a fuel pressure gauge on it yet to check the pump you just put in? It's cheap and easy instead of replacing random **** till it works.
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Old Apr 25, 2009 | 09:11 AM
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Yea fuel pressure is good. The pump has been on there for a while.
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Old Apr 27, 2009 | 03:06 PM
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My GM truck just had similar starting problems.
The problem was a check valve in the fuel pump assembly, which maintains fuel pressure when the ignition is turned off. Had to replace the fuel pump.
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Old Apr 29, 2009 | 12:09 PM
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Well I changed out my ignition relay and the car started right up everytime all weekend long. Today I tried to start it and it wouldnt start. So im back to square one.
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Old May 2, 2009 | 01:07 PM
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Still need help! I changed the fuel filter, I changed the crank sensor. I checked all the fuses. I checked fuel pressure it is perfect. I really dont know what is left. It is still just cranking and not firing. Any other ideas?
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Old May 2, 2009 | 01:17 PM
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Could be your fuel pump relay or your starter relay. Those two were bad on my car. My car would just crank over and over. Took me a while to track it down but it ended up being those two. They're located in the fuse box under the hood.
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Old May 2, 2009 | 01:56 PM
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im so confused now. I put in the old ignition relay and now the car starts right up. i dont get it. i guess well see how long this lasts.
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Old May 2, 2009 | 02:05 PM
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I just had the same problem and i think i tracked it down to do with the starter. I am waiting to see if the problem continues if so ill have to replace it.
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