'91 - low idle, hesitation - no codes
11-07-18, 09:58 AM
#1
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'91 - low idle, hesitation - no codes
1991 ls400!
Couple days ago I was out driving around for a couple hours. And car was working great. Parked it to get my hair cut and when I got back into the car it was idling really low and sounded crammed! Loads of spitting and hesitations when trying to accelerate. Along with the car jerking. all this time I had NO codes
I've changed the plugs, MAF , TPS and the coil I was able to get at on the top. ( going to try the lower one asap) I got a ECU out of a celsior last night and put that in. That car is idling low but much smoother. Its accelerating much better as well. But still spitting and feels held back still. I am also assuming the JDM car didnt have cruise because code #56 and TRAC are now on.
original UCU: 89661-50042
JDM ECU : 89661-50102
please if you have any input or ideas swing them my way. Other then this new code #56 the car is still not running how it should at all. And I am just about out of ideas. Last idea I have is the distributor caps... I do have a video of how its acting when I am driving but I cant upload it.
Couple days ago I was out driving around for a couple hours. And car was working great. Parked it to get my hair cut and when I got back into the car it was idling really low and sounded crammed! Loads of spitting and hesitations when trying to accelerate. Along with the car jerking. all this time I had NO codes
I've changed the plugs, MAF , TPS and the coil I was able to get at on the top. ( going to try the lower one asap) I got a ECU out of a celsior last night and put that in. That car is idling low but much smoother. Its accelerating much better as well. But still spitting and feels held back still. I am also assuming the JDM car didnt have cruise because code #56 and TRAC are now on.
original UCU: 89661-50042
JDM ECU : 89661-50102
please if you have any input or ideas swing them my way. Other then this new code #56 the car is still not running how it should at all. And I am just about out of ideas. Last idea I have is the distributor caps... I do have a video of how its acting when I am driving but I cant upload it.
Last edited by RA40; 11-07-18 at 12:26 PM. Reason: descriptive title
11-07-18, 11:26 AM
#2
1991 ls400!
Couple days ago I was out driving around for a couple hours. And car was working great. Parked it to get my hair cut and when I got back into the car it was idling really low and sounded crammed! Loads of spitting and hesitations when trying to accelerate. Along with the car jerking. all this time I had NO codes
I've changed the plugs, MAF , TPS and the coil I was able to get at on the top. ( going to try the lower one asap) I got a ECU out of a celsior last night and put that in. That car is idling low but much smoother. Its accelerating much better as well. But still spitting and feels held back still. I am also assuming the JDM car didnt have cruise because code #56 and TRAC are now on.
original UCU: 89661-50042
JDM ECU : 89661-50102
please if you have any input or ideas swing them my way. Other then this new code #56 the car is still not running how it should at all. And I am just about out of ideas. Last idea I have is the distributor caps... I do have a video of how its acting when I am driving but I cant upload it.
Couple days ago I was out driving around for a couple hours. And car was working great. Parked it to get my hair cut and when I got back into the car it was idling really low and sounded crammed! Loads of spitting and hesitations when trying to accelerate. Along with the car jerking. all this time I had NO codes
I've changed the plugs, MAF , TPS and the coil I was able to get at on the top. ( going to try the lower one asap) I got a ECU out of a celsior last night and put that in. That car is idling low but much smoother. Its accelerating much better as well. But still spitting and feels held back still. I am also assuming the JDM car didnt have cruise because code #56 and TRAC are now on.
original UCU: 89661-50042
JDM ECU : 89661-50102
please if you have any input or ideas swing them my way. Other then this new code #56 the car is still not running how it should at all. And I am just about out of ideas. Last idea I have is the distributor caps... I do have a video of how its acting when I am driving but I cant upload it.
11-07-18, 11:35 AM
#4
It happens! 
11-07-18, 11:36 AM
#5
Driver School Candidate
Thread Starter
Join Date: Nov 2018
Location: Canada
Posts: 6
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'91 - low idle, hesitation - no codes
1991 ls400!
Couple days ago I was out driving around for a couple hours. And car was working great. Parked it to get my hair cut and when I got back into the car it was idling really low and sounded crammed! Loads of spitting and hesitations when trying to accelerate. Along with the car jerking. all this time I had NO codes
I've changed the plugs, MAF , TPS and the coil I was able to get at on the top. ( going to try the lower one asap) I got a ECU out of a celsior last night and put that in. That car is idling low but much smoother. Its accelerating much better as well. But still spitting and feels held back still. I am also assuming the JDM car didnt have cruise because code #56 and TRAC are now on.
original UCU: 89661-50042
JDM ECU : 89661-50102
please if you have any input or ideas swing them my way. Other then this new code #56 the car is still not running how it should at all. And I am just about out of ideas. Last idea I have is the distributor caps... I do have a video of how its acting when I am driving but I cant upload it.
Couple days ago I was out driving around for a couple hours. And car was working great. Parked it to get my hair cut and when I got back into the car it was idling really low and sounded crammed! Loads of spitting and hesitations when trying to accelerate. Along with the car jerking. all this time I had NO codes
I've changed the plugs, MAF , TPS and the coil I was able to get at on the top. ( going to try the lower one asap) I got a ECU out of a celsior last night and put that in. That car is idling low but much smoother. Its accelerating much better as well. But still spitting and feels held back still. I am also assuming the JDM car didnt have cruise because code #56 and TRAC are now on.
original UCU: 89661-50042
JDM ECU : 89661-50102
please if you have any input or ideas swing them my way. Other then this new code #56 the car is still not running how it should at all. And I am just about out of ideas. Last idea I have is the distributor caps... I do have a video of how its acting when I am driving but I cant upload it.
Last edited by RA40; 11-07-18 at 12:21 PM. Reason: descriptive title
11-07-18, 06:43 PM
#7
Racer
Welcome Kyle.
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