2011 ZR1 Won't Start
Thread Starter
Racer
Joined: Mar 2006
Posts: 268
Likes: 27
From: Clearwater FL
2011 ZR1 Won't Start
Car has only 6,xxx miles. I last drove the car about 30 days prior. Tried to start it recently and ignition just clicks repeatedly. When I stop, all the gages turn as if the car is on. Battery is two years old and maintained with a CTEK 3300. Voltage on the DIC shows range between 12.2-12.5. Tried jumping the car a couple different ways, same result. When they came to transport the car to the shop, they checked fuse box and ignition wires. After looking it over, they said there was no fuel pressure. After taking it to the shop they believe fuel pump is bad. They said they put a scanner to the car and "the fuel pump control module is commanding the pump to turn on and we have no fuel pressure." I was told they ruled out fuse/relay and physical connections. OEM PN is 19207431. Can't find anyone with stock and I was told the part is on national backorder with no known ETA. Any advice on something that may have been overlooked or other possible cause? Any help would be greatly appreciated.
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,621
Likes: 4,069
From: Cape Coral, Florida
My friend you should be finding another shop...they have no clue !!...they should be diagnosing the starter system...a fuel pump not running isn’t going to make the starter not turn..don’t know why they are even looking at the ignition wires...there are shops that are good at replacing parts and there are shops that are good at diagnostics...yours is the former...FIND ANOTHER SHOP !!
Last edited by C5 Diag; Jan 18, 2021 at 01:40 PM.
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,621
Likes: 4,069
From: Cape Coral, Florida
That’s a completely different concern !!...if they have a bidirectional scan tool they can command the pump on...if not working they should be checking the electrical circuit...power and grounds...easy diagnosis if they are competent !!
Drifting
Joined: Apr 2016
Posts: 1,286
Likes: 611
From: DFW Texas
Andrew,
There is a huge distinction between the no-start condition you originally described to diagnosing a bad fuel pump. If I interpreted what you wrote, the engine did hot turn over, even when the transport arrived, same result. This is definitely a starting system problem as Rob described. Seems that after it arrived at the shop they were successful in getting the car to turnover, but no start and further diagnostics now indicate a fuel pump problem. I am skeptical when a general automotive shop starts to poke around, but that is just based on my prior poor experiences with marginal auto mechanic skills. I did look for the availability of your part number and the following doesn't show that the part is out-of-stock, but I also didn't try to go through the purchase process. Also, Rockauto shows they have the part, but it is expensive, so I would be careful to have a very competent shop performing the diagnostics.
https://www.tascaparts.com/oem-parts...de-lh-19207431
Good luck
GD
There is a huge distinction between the no-start condition you originally described to diagnosing a bad fuel pump. If I interpreted what you wrote, the engine did hot turn over, even when the transport arrived, same result. This is definitely a starting system problem as Rob described. Seems that after it arrived at the shop they were successful in getting the car to turnover, but no start and further diagnostics now indicate a fuel pump problem. I am skeptical when a general automotive shop starts to poke around, but that is just based on my prior poor experiences with marginal auto mechanic skills. I did look for the availability of your part number and the following doesn't show that the part is out-of-stock, but I also didn't try to go through the purchase process. Also, Rockauto shows they have the part, but it is expensive, so I would be careful to have a very competent shop performing the diagnostics.
https://www.tascaparts.com/oem-parts...de-lh-19207431
Good luck
GD
thing knower
Joined: Mar 2017
Posts: 3,404
Likes: 942
From: wpb
you can trigger the pump to come on by pulling the cover off the pump relay and manually activating it with your finger...
with the car in "run mode" the pump should come on no matter what....
this will confirm that the pump is actually running...
with the car in "run mode" the pump should come on no matter what....
this will confirm that the pump is actually running...
Last edited by drewz06; Jan 18, 2021 at 06:54 PM.
Burning Brakes
Joined: Aug 2014
Posts: 1,240
Likes: 258
From: Tampa FL
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Drifting
Joined: Nov 2011
Posts: 1,843
Likes: 330
From: western NY
Here's where I would probably start....
Safety Car
Joined: May 2016
Posts: 4,669
Likes: 1,849
From: Erlanger, Kentucky
Just try a different battery before anything else as this is likely the problem. New batteries go bad even if they are maintained. Regardless of the fuel pump working or not, it should turn over if the battery is good.
Race Director
Joined: Dec 2005
Posts: 11,892
Likes: 107
From: God's Country, ID
If you've verified low/no pressure at the fuel rail via a guage, see if the fp kicks-on by powering the fp with 12v directly at the fp (bypassing the fuse block).
The fp conection at the fuse-block terminal (just beneath the fp relay) is know to loosen and fail sporadically. I've had to disassemble the fuse block (fairly simple) crimp the connecter slightly for better connection, and add dielectric grease to keep it stable.
Seldom do these pumps just suddenly die. It's a short somewhere the overwhelming number of times.
The fp conection at the fuse-block terminal (just beneath the fp relay) is know to loosen and fail sporadically. I've had to disassemble the fuse block (fairly simple) crimp the connecter slightly for better connection, and add dielectric grease to keep it stable.
Seldom do these pumps just suddenly die. It's a short somewhere the overwhelming number of times.
Last edited by DSOMC6; Jan 19, 2021 at 10:00 PM.
Thread Starter
Racer
Joined: Mar 2006
Posts: 268
Likes: 27
From: Clearwater FL
If you've verified low/no pressure at the fuel rail via a guage, see if the fp kicks-on by powering the fp with 12v directly at the fp (bypassing the fuse block).
The fp conection at the fuse-block terminal (just beneath the fp relay) is know to loosen and fail sporadically. I've had to disassemble the fuse block (fairly simple) crimp the connecter slightly for better connection, and add dielectric grease to keep it stable.
Seldom do these pumps just suddenly die. It's a short somewhere the overwhelming number of times.
The fp conection at the fuse-block terminal (just beneath the fp relay) is know to loosen and fail sporadically. I've had to disassemble the fuse block (fairly simple) crimp the connecter slightly for better connection, and add dielectric grease to keep it stable.
Seldom do these pumps just suddenly die. It's a short somewhere the overwhelming number of times.
Cruising
Joined: Mar 2022
Posts: 14
Likes: 0
From: Houston
2009 Zr1 Wont Start
Hello, i have an 09 ZR1 that just started having issues and wont start up unless i give it a few push starts. at first i noticed the car would not start so i replaced the battery twice. after the issue happened again took it to O'Reilly to have them test the Alternator and the alternator they said shows regulator Voltage failed. my thoughts are that maybe it needs a new alternator, what are your thoughts. a better insight about what I'm experiencing is the car is plugged in and battery is charged. when i try to start it will click and not start, but when i remove my foot from the clutch and un-press the push start the car turns on, but only as if it is in accessory mode, meaning the car is not running but the green light on the start button is on and everything else comes on radio, a/c, gauges. after a few times of repeating the process to turn off and on the car finally starts up. once it starts up the car runs fine but once i turn the car off it sometime wont turn back on and would have to repeat the process but before doing that i would check the battery and would seem that its low again. my thoughts is maybe the alternator is not charging the battery and that could be the issue. but has anyone had this similar issue? please help.
Cruising
Joined: Mar 2022
Posts: 14
Likes: 0
From: Houston
Cruising
Joined: Mar 2022
Posts: 14
Likes: 0
From: Houston
@pcguy2u i have not as originally I was thinking it can be the alternator. Would you say that this can also be the case or from the sounds of it would your thoughts lean towards both the starter and the alternator? I have not replaced the alternator just yet. Wanted to get others thoughts on this first.