pieceofcloth
Supporting Member
- 573
- 561
- Oct 6, 2019
-
Houston,
Texas
My 1991 gsx is bone stock. Recently I was driving and my car started jerking hard. It starts up perfectly fine and I can drive it around the block and get into boost. After 5 mins it'll start to just like slam /jerk like it has some fuel cut. The idle does not go up and down. It idles perfect. I have an aftermarket fpr and I pulled over and saw the fuel gauge go from like 20-22 down to 0 and back up. My fuel pressure is set correctly with the vacuum line off at 36.5 - 37
My fuel pump was changed a month ago and I forgot to do the fuel filter but did that a week ago. I haven't done a boost leak test cause I can't find my tester at the moment. Here is a picture of my plugs. I did purchase new to go ahead and replace these but I wanted to see if you guys can see or lead me in the direction I should go next.
The vehicle has always drove fine and this just started recently. I'm thinking I should remove the ecm and send it out. With ecmlink, maybe I cam diagnose it better. No codes or check engine either. Thank you
The gaps on these were at 25, no more. One or two were a bit less. I opened them to 28. And here is a video of it starting up and idling. I'll need to take it around the block to see if it still bucks. Idling/start up
I'm sorry about the video. It drove fine. I put it in 2nd and was trying to hit boost. It cut/bucked and I turned back home. As the vehicle is warmed, you can see I'm having trouble taking off because it won't accelerate. I have to like ride the clutch. When the vehicle is in the garage, it shows how the fuel goes down and up. Could this be the ect sensor? Idk. Thank you in advance
At 1:05 I'm about to take a right. I go into first, I put in 2nd and am waiting for a vehicle in front me to go further. I accelerate and when I hit 3.5rpm I lose all power. I take a quick right and make another two more rights to pull up into the drive way.
My fuel pump was changed a month ago and I forgot to do the fuel filter but did that a week ago. I haven't done a boost leak test cause I can't find my tester at the moment. Here is a picture of my plugs. I did purchase new to go ahead and replace these but I wanted to see if you guys can see or lead me in the direction I should go next.
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The vehicle has always drove fine and this just started recently. I'm thinking I should remove the ecm and send it out. With ecmlink, maybe I cam diagnose it better. No codes or check engine either. Thank you
The gaps on these were at 25, no more. One or two were a bit less. I opened them to 28. And here is a video of it starting up and idling. I'll need to take it around the block to see if it still bucks. Idling/start up
I'm sorry about the video. It drove fine. I put it in 2nd and was trying to hit boost. It cut/bucked and I turned back home. As the vehicle is warmed, you can see I'm having trouble taking off because it won't accelerate. I have to like ride the clutch. When the vehicle is in the garage, it shows how the fuel goes down and up. Could this be the ect sensor? Idk. Thank you in advance
You must be logged in to view this image or video.
At 1:05 I'm about to take a right. I go into first, I put in 2nd and am waiting for a vehicle in front me to go further. I accelerate and when I hit 3.5rpm I lose all power. I take a quick right and make another two more rights to pull up into the drive way.
