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HarmonIV
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Apr 10, 2016, 8:59 AM
Post #1 of 24
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2001 Chevrolet Camaro z/28 5.7L. 134k
Car will not start. I checked relays and fuses under hood and they are good. Car does turn over and attempts to start but only for a second or two. I heard no fuel pump running so I replaced the fuel pump and fuel filter. After changing pump I can confirm it pumps gas to fuel rail but I have 0-3 pressure at the rail. I can spray starting fluid into engine and it will start a second. I have narrowed it down to maybe the fuel injection pressure damper. Can it fail and stop sending gas to the rail? I put code reader on car and have no codes.
I'm lost.
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Hammer Time
Ultimate Carjunky
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Apr 10, 2016, 9:14 AM
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Re: Camaro No Start
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The next time you try to start it, look for a security indicator that could be just a small flashing light somewhere or a message indicating security.
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HarmonIV
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Apr 10, 2016, 9:42 AM
Post #3 of 24
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Re: Camaro No Start
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When I turn key to on the security light comes on and goes off after a few seconds.
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Hammer Time
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Apr 10, 2016, 9:49 AM
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Re: Camaro No Start
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What did you say your fuel pressure was?
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kev2
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Apr 10, 2016, 10:01 AM
Post #5 of 24
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Re: Camaro No Start
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"I have 0-3 pressure at the rail" ???? caught my eye also.... a place to start for sure.
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Hammer Time
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Apr 10, 2016, 10:09 AM
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Re: Camaro No Start
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Yeah, I want to hear the explanation.
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HarmonIV
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Apr 10, 2016, 10:20 AM
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Re: Camaro No Start
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Yes 0-3 at the rail. I took the fuel line at the rail loose and turn key to on. The pump runs two seconds and fuel comes out of the line which would then go to fuel rail.
I just put more starting fluid in car to confirm in my head I had no ignition/spark issues. It fired up and ran 5 or 6 seconds then died due to no fuel.
I'm stumped. I would say my new fuel pump is defective but it's the same exact issuenow as it was before I installed the new fuel pump.
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Hammer Time
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Apr 10, 2016, 10:24 AM
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Re: Camaro No Start
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Well, I can tell you one thing for sure. That car will not run on 3PSI of fuel pressure.
The spec is 55 to 60PSI and not a pound less.
You need to find your fuel pressure problem.
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HarmonIV
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Apr 10, 2016, 10:27 AM
Post #9 of 24
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Re: Camaro No Start
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Yes I do. I can easily pull the pump and get another but yt? I hate to do that if it is producing fuel to the rail. Only thing is, is the pump providing enough fuel to the rail.
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Hammer Time
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Apr 10, 2016, 10:32 AM
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Re: Camaro No Start
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No, the pump is not producing sufficient fuel to the rail and don't assume the pump itself is the cause. This could be anything from electrical supply to incorrect installation of the pump to a problem with the tank.
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kev2
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Apr 10, 2016, 12:17 PM
Post #11 of 24
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Re: Camaro No Start
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"The pump runs two seconds " and then shuts down is correct, normal operation without engine running..
Have we discussed codes?
Are there any modifications?
Did you check the fuel filter ? I believe a chassis mounted filter on 01 Camaro...
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HarmonIV
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Apr 10, 2016, 6:25 PM
Post #12 of 24
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Re: Camaro No Start
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There are no modifications to the car. I also had no indication there was an issue until I pulled into a parking lot and then went to leave in the car did not start. I had it towed to my house. I also put a code reader on the car, but I also had unplugged my battery previously . It showed no codes, but I'm not sure if I'm unplugging the battery would mess this up?
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Discretesignals
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Apr 10, 2016, 6:58 PM
Post #13 of 24
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You should make some electrical checks at the fuel pump relay. When you first turn the ignition on, the relay should click on for a few seconds and then click off. You can also use a 12 volt test light or volt meter to make some electrical checks in the relay cavity. If the relay click on and then off, that tells you the control side is working.
Another method is to jump 30 to 87 in the relay cavity to send power to the fuel pump. You should hear the pump run when you do this. If it doesn't run, make sure you have power all the time on terminal 30 in the cavity and then check for power down at the pump. If you have power at the pump, make sure the pump's ground circuit is good. You should have less than 0.3 volts at the pump ground at the connector to battery negative. If it is higher than that, the ground has resistance or is open. If have power and good ground at the pump connector, more than likely there is a problem inside the tank.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Apr 10, 2016, 6:59 PM)
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Hammer Time
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Apr 11, 2016, 2:11 AM
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And you should have a fuel pressure gauge installed during all of this to monitor. It HAS to be withing spec to run.
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HarmonIV
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Apr 11, 2016, 4:28 PM
Post #15 of 24
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Re: Camaro No Start
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Thanks for the help all. I did a jumper wire from 30 to 87 and that ran the pump and gas pumped all the way to the fuel rail where I had the fuel line disconnected. I've had the fuel pressure gauge on it a lot and only get 3 psi. Can the fuel injection pressure damper on the rail cause a fuel restriction ?
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Hammer Time
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Apr 11, 2016, 4:31 PM
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Re: Camaro No Start
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No, you have a problem with the pump. That doesn't mean just slap a new pump in. You need to find the actual problem.
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kev2
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Apr 11, 2016, 5:59 PM
Post #17 of 24
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Re: Camaro No Start
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out of an abdunance of caution check the engine oil for evidence of fuel.
did you look for fuel filter....
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HarmonIV
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Apr 11, 2016, 6:30 PM
Post #18 of 24
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Re: Camaro No Start
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Ill check oil for fuel this week. I replaced the fuel filter.
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HarmonIV
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Apr 13, 2016, 4:51 PM
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Re: Camaro No Start
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I won't be as to check car out till Saturday as it is at my parents.
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HarmonIV
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Apr 14, 2016, 5:45 PM
Post #20 of 24
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Re: Camaro No Start
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So I'm headed back to work on car on Saturday. Other than checking for fuel in oil I don't know what else to. Check or do. Anything else I should do before I have it towed to a car shop?
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HarmonIV
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Apr 16, 2016, 5:13 PM
Post #21 of 24
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Re: Camaro No Start
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No smell of gas in oil. I'm out of ideas. Probably taking it to a shop this week.
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Hammer Time
Ultimate Carjunky
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Apr 16, 2016, 5:15 PM
Post #22 of 24
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Re: Camaro No Start
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If you just don't want to or are unable to determine why you have no fuel pressure, then it's best you let someone else do it.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Discretesignals
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Apr 16, 2016, 5:45 PM
Post #23 of 24
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Maybe your gauge isn't accurate?
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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HarmonIV
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Apr 30, 2016, 2:22 PM
Post #24 of 24
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Re: Camaro No Start
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Update, Camaro is now running. It turns out the air tex pump I put into my car had a faulty fuel pressure regulator. By faulty I mean it wasn't attached and fell off . I went ahead and returned that fuel pump and went to Chevrolet and bought an A/C Delco pump and put in the car at an auto shop. It's fired up. My car is back on the road. Thanks for everyone's help and advice.
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