Ford Mustang Forums banner
1 - 6 of 6 Posts

·
Registered
1989 GT
Joined
·
1,656 Posts
Saturday update:
Injectors cleaned and tested. I re wrote tune just in case. The car will start with the intake tube almost all the way off idles high for about 40 seconds and shuts off. Then it won’t do anything but turn over afterwards. If I let it sit it seems to want to start better. To me it is loading up with fuel or something. Could it also be something in my injector parameters
Is off? Any thoughts are appreciated.
Do you have a local shop you know or that can help sort you out?
 

·
Registered
1989 GT
Joined
·
1,656 Posts
Yes 40 psi. Tune is just the tune Pro M gave me as a startup tune.
I understand what you are saying Stangdawg but in reality, I don't trust anyone messing with my car when I am not there This is not my first time in this situation. I have had dozens of cars and with patience and working through things I am always able to figure it out rather than pay someone to do it for me. I built this car over the last 2 years mainly by myself and for me to give up and have some fix it for me just not in my credo.
I get it. I’m fortunate to have a couple sources to get help if I’m totally stuck.

At the very least others can benefit from reading this thread on how to check everything when sorting out a problem.
 

·
Registered
1989 GT
Joined
·
1,656 Posts
I am with you on not taking your car to a shoppe most of the time they do not have a clue in particularly about those cars and will more than likely just end up throwing parts at the problem I don`t know how fond you are of your mods but you may
have to back track and undo some things like I indicated the fox is a simple beast and sometimes you can over do it i`m
even thinking your computer module may need reprograming just a suggestion
Or, you have a super experienced shop that is one of the most knowledgeable tuners in the State you live in……. Don’t discount pro help when you are stuck.
 

·
Registered
1989 GT
Joined
·
1,656 Posts
it is super hard to find a true mustang mechanic these days
I have two shops and not a question or concern that car would get romped on, etc.

I hope he comes back with an update as many of these issues others will run into so gives things to check.
 

·
Registered
1989 GT
Joined
·
1,656 Posts
It seems to want to start better plugs not loaded with fuel. It will start for one second and die. I noticed my #4 plug was super clean. I checked the coil and it is definitely giving spark. Gonna keep playing with it and see if I can get her to get a steady idle.
Have you played with the throttle set screw to open it up a 1/2 or full turn?

You try and swap injector to see if happens in different cylinder?
 
1 - 6 of 6 Posts
Top