wants to stall/loses power on accel
#1
02-04-2005, 01:01 PM
Join Date: Sep 2001
Location: waterford,michigan
Posts: 65
Likes: 0
Received 0 Likes
on
0 Posts
wants to stall/loses power on accel
Hey fella's,
I bought a 91 F150 with the 4.9 I6,fuel injected.
It runs pretty well and I have replaced the fuel filter,pcv valve and air and breather filters.
What happens is,if I am at a stop and give it some gas to go,it loses power and almost stalls and then it picks up power again and I am fine.
I was thinking a possible vacuum leak but have been unable to find any? Other than that,it runs and idles fine.
Anyone have any suggestions.Thank you.
I bought a 91 F150 with the 4.9 I6,fuel injected.
It runs pretty well and I have replaced the fuel filter,pcv valve and air and breather filters.
What happens is,if I am at a stop and give it some gas to go,it loses power and almost stalls and then it picks up power again and I am fine.
I was thinking a possible vacuum leak but have been unable to find any? Other than that,it runs and idles fine.
Anyone have any suggestions.Thank you.
Last edited by drown021; 02-05-2005 at 04:55 PM.
#2
02-04-2005, 08:32 PM
Senior Member
Join Date: Dec 2004
Location: poquoson virginia
Posts: 1,085
Likes: 0
Received 0 Likes
on
0 Posts
Sounds like it could also be a bad TP sensor. Check the sensor with the key on. Probe the green wire with a dvom. The sensor should be around 0.9 volts and rise with throttle to almost 5 volts. If it jumps, or drops, replace the sensor. Don't forget to check fuel pressure. The 4.9 runs sixty pounds of fuel pressure. Keep us posted.
Robbie
Robbie
#3
02-05-2005, 01:00 AM
Senior Member
Join Date: Dec 2004
Location: Omaha, Nebraska
Posts: 150
Likes: 0
Received 0 Likes
on
0 Posts
#4
02-05-2005, 07:27 AM
Join Date: Sep 2001
Location: waterford,michigan
Posts: 65
Likes: 0
Received 0 Likes
on
0 Posts
#6
02-06-2005, 02:30 PM
Join Date: Sep 2001
Location: waterford,michigan
Posts: 65
Likes: 0
Received 0 Likes
on
0 Posts
#7
02-06-2005, 08:03 PM
Senior Member
Join Date: Dec 2004
Location: Omaha, Nebraska
Posts: 150
Likes: 0
Received 0 Likes
on
0 Posts
Trending Topics
#8
02-07-2005, 08:27 AM
Join Date: Sep 2001
Location: waterford,michigan
Posts: 65
Likes: 0
Received 0 Likes
on
0 Posts
Looks like I found the problem.
The charcoal canister was broken where the vacuum line attatchs and completely broke off when I touched it.I repaired it with some goop and am good to go now.
I did learn how to check all my sensors though.
Most of them were new.I'm almost thinking that the guy who sold it was throwing parts at it and finally said f&*k it.
Thanks for the suggestions.
The charcoal canister was broken where the vacuum line attatchs and completely broke off when I touched it.I repaired it with some goop and am good to go now.
I did learn how to check all my sensors though.
Most of them were new.I'm almost thinking that the guy who sold it was throwing parts at it and finally said f&*k it.
Thanks for the suggestions.