North East F-Body Association

North East F-Body Association (http://www.northeastf-bodyassn.com/index.php)
-   Fourth Generation (http://www.northeastf-bodyassn.com/forumdisplay.php?f=16)
-   -   Hard start when cars sits. (http://www.northeastf-bodyassn.com/showthread.php?t=5739)

DirtyBird69 05-20-2015 01:45 PM

Hard start when cars sits.
 
Hello. 4 years ago I bought my 95 T/A. I found that from day one that if it sat for more than several hours, I would have to leave the key in the accessory forward position for 8-10 seconds for the car to fire up right away. If it has been less time, the car fires right up. Just this morning I found it to be an even harder start than normal. I have installed new plugs approx: 8k ago. I just put a pressure gauge on it and I get 43 PSI which is normal. I am going to let the car sit for 7 hours and test it again. My first course of action will be to change the fuel filter (cheapest and easy)
Then I am thinking FPR and finally Fuel pump. I really am not looking forward to that though hehe. Any ideas? thanks

Mystery Bird 05-20-2015 05:20 PM

How long does it hold the fuel pressure?

DirtyBird69 05-20-2015 07:20 PM

So far 18 minutes after I turned it off.

DirtyBird69 05-20-2015 07:31 PM

Alright, so the fuel pressure just started to dip by 2 PSI about 25 minutes after It was shut off.

ILuvPizzaTimes10 05-20-2015 10:56 PM

fuel pressure is fine. pressure drop is fine. mine drops alot faster and starts up right away. i would be looking at spark/opti signal. any codes? low res pulse at low rpm with an oil filled opti can do this.

reason i think its not fuel. no matter how long you keep the key on it only primes pump for no more then 2 seconds. but you can try cycling key three time (on for 2 seconds off for 5 seconds....). that will rule out fuel delivery.

Mystery Bird 05-21-2015 11:48 AM

Security light on dash doesn't light up does it? You can try cleaning the resistor on the key. Probably not the issue but it's something to rule out.

DirtyBird69 05-21-2015 12:59 PM

No security light. The thing is it runs great once started. If I try to start it with out turning the key back and forth 3 times it will crank and crank...


All times are GMT. The time now is 12:31 AM.

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2026, Jelsoft Enterprises Ltd.