Hard to start when cold
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,435
Likes: 3,982
From: Cape Coral, Florida
When only cold I may lean towards an ECT issue...maybe fuel pressure...hard to say without some testing...you can prime the fuel system when cold and see if that resolves it...can even be a cam sensor failing.
Last edited by C5 Diag; Sep 14, 2020 at 02:45 PM.
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,435
Likes: 3,982
From: Cape Coral, Florida
If you had injector or coil pack issues you’d be throwing some misfire DTC’s !!...coil packs are bulletproof on these cars anyway...when you throw parts at it you’re just throwing money at it !!
Drifting
Joined: Mar 2015
Posts: 1,420
Likes: 302
From: CSRA, SC
With the level of detail given by the OP, any suggestion is pure guesswork. We need more info, like how long is it cranking, is it sputtering and then firing or nothing seems to happen then its just suddenly running, how does it idle once its running....give us something to go on. If a picture speaks a thousand words, a video must speak a million.
Thread Starter
Melting Slicks
Joined: Aug 2014
Posts: 2,462
Likes: 460
From: East Windsor NJ
Here's a link to a video. Its not awful - but like the rest of you any changes - no matter how minor - tend to get your attention.....
https://1drv.ms/v/s!AkYiM3p-XVDUpl1P...Xbf9_?e=Dw0CNd
https://1drv.ms/v/s!AkYiM3p-XVDUpl1P...Xbf9_?e=Dw0CNd
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4th Gear
Joined: Oct 2020
Posts: 4
Likes: 0
I have this EXACT same issue, symptoms and start. I’ll try to post a video.
My issue also went away for a while but came back. I’m trying to figure out where the fuel check valve is. I believe there is one in the pump and another one in-line but I’m still researching.
My issue also went away for a while but came back. I’m trying to figure out where the fuel check valve is. I believe there is one in the pump and another one in-line but I’m still researching.
Last edited by Vette02z51; Oct 3, 2020 at 01:42 PM.
Burning Brakes
Joined: Aug 2008
Posts: 887
Likes: 8
From: North Plainfield New Jersey
Mine seems to be the same exact way. If I let go of the key too early, give it a sec, and try a 2nd time, it starts instantly without the hesitation like in your video. I'm guessing the above poster may be on to something with the fuel pressure bleeding off. But not sure because the pump should prime the system prior to startup.
4th Gear
Joined: Oct 2020
Posts: 4
Likes: 0
Mine seems to be the same exact way. If I let go of the key too early, give it a sec, and try a 2nd time, it starts instantly without the hesitation like in your video. I'm guessing the above poster may be on to something with the fuel pressure bleeding off. But not sure because the pump should prime the system prior to startup.
Last edited by Vette02z51; Oct 3, 2020 at 03:21 PM.