Cold Start Problem FI 302
#1
Bullitt Member
Thread Starter
Join Date: May 4, 2004
Posts: 238
Likes: 0
Received 0 Likes
on
0 Posts
Someone suggested I post this question here.
Transplanted '91 FI 302 into a Jeep. After it sets overnight it starts but lopes really bad. If I cycle the key 4 times to let the fuel pump build up it starts up fine and runs pretty good. After warm up all is well. It has to set for 8-10 hours to loose fuel pressure and give this symptom. Anyone ran across this before and fixed it?
Thanks for any help!
Transplanted '91 FI 302 into a Jeep. After it sets overnight it starts but lopes really bad. If I cycle the key 4 times to let the fuel pump build up it starts up fine and runs pretty good. After warm up all is well. It has to set for 8-10 hours to loose fuel pressure and give this symptom. Anyone ran across this before and fixed it?
Thanks for any help!
#3
Is it a complete mass air conversion? did you put the whole computer and wiring into it? It might be getting some odd reading from either a TPS sensor or the O2 sensor. Have you tried to pull the codes?
#4
Shelby GT500 Member
Join Date: January 30, 2004
Location: Riverside, CA
Posts: 2,916
Likes: 0
Received 0 Likes
on
0 Posts
I had a similar problem at cold starts in the morning before when i had my Ranger. But my problem was because of the oil viscosity I used. I used 20W-50 since it was an old vehicle.
#5
Originally posted by BigBoyBoelts@July 7, 2004, 12:12 AM
Is it a complete mass air conversion? did you put the whole computer and wiring into it? It might be getting some odd reading from either a TPS sensor or the O2 sensor. Have you tried to pull the codes?
Is it a complete mass air conversion? did you put the whole computer and wiring into it? It might be getting some odd reading from either a TPS sensor or the O2 sensor. Have you tried to pull the codes?
#7
Shelby GT500 Member
Join Date: March 3, 2004
Location: Richmond VA
Posts: 2,633
Likes: 0
Received 0 Likes
on
0 Posts
do you have a fuel poressure gauge hooked up to the fuel line to see what the actual fuel pressure is doing? or hooked up a regulator to make sure it is maintaining proper fuel pressure the whole time. also might want to go back and check all the wiring and make sure everything is on its proper place
Thread
Thread Starter
Forum
Replies
Last Post
mustanglindsey
Repair and Service Help
5
8/3/15 09:07 AM