Hesitating, surging, and bucking.
10-29-2017, 06:43 PM
#1
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Location: Michigan, Benzie
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Car: 92 RS
Engine: 305
Transmission: 700r4
Hesitating, surging, and bucking.
Hey guys, i think im having a torque converter problem just not sure. Got a 92 305 tbi with 700r4.
Poor gas milage for starters. But has bad hesitation during acceleration. It gets a little better higher in the rpm range but not much. Revs up fine in park and has great response. When I'm up to speed I have some slight surging. Nothing major but its noticable.
Occasionally on deceleration and under 1/4 throttle, I get some bucking. Sometimes its bad other times it's just a little. If i let off it goes away.
If im at cruising speed and hold the gas and brake at the same time, the rpms jump a little. From what I've read Im assuming that is the torque converter unlocking? So I think the lockup switch? Is working correct but thats about the extent of my knowledge.
any insite would be helpful.
Thanks.
Poor gas milage for starters. But has bad hesitation during acceleration. It gets a little better higher in the rpm range but not much. Revs up fine in park and has great response. When I'm up to speed I have some slight surging. Nothing major but its noticable.
Occasionally on deceleration and under 1/4 throttle, I get some bucking. Sometimes its bad other times it's just a little. If i let off it goes away.
If im at cruising speed and hold the gas and brake at the same time, the rpms jump a little. From what I've read Im assuming that is the torque converter unlocking? So I think the lockup switch? Is working correct but thats about the extent of my knowledge.
any insite would be helpful.
Thanks.
Last edited by 92 "ODESSA" RS; 10-29-2017 at 06:47 PM.
10-29-2017, 08:21 PM
#3
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Car: 92 RS
Engine: 305
Transmission: 700r4
Re: Hesitating, surging, and bucking.
I checked and it gives me a code 44.
I originally thought it could be the map sensor or maybe even the 02. But then I got told it sounds like a torque converter issue so here I am lol
I originally thought it could be the map sensor or maybe even the 02. But then I got told it sounds like a torque converter issue so here I am lol
Last edited by 92 "ODESSA" RS; 10-29-2017 at 08:28 PM.
10-30-2017, 11:12 AM
#6
Supreme Member
Re: Hesitating, surging, and bucking.
My 88 V6 5-speed had bucking bronco syndrome.
Replaced the MAF, and it helped a lot.
But still bucked some.
Replaced the ECM.
No bucking since.
Replaced the MAF, and it helped a lot.
But still bucked some.
Replaced the ECM.
No bucking since.
10-30-2017, 05:57 PM
#7
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Car: 92 RS
Engine: 305
Transmission: 700r4
Re: Hesitating, surging, and bucking.
Thanks Tootie.
I'll have to pick a battery up for my multimeter.
To rule out the map sensor I put my jumper in the a/b ports while the car was running and according to the cel flashes its running rich(on more than off). If i unplug the map sensor it stays rich and starts to idle rough. I think it might be the 02 or ecm at this point according to the chart.
I'll check back once I test the 02 sensor
I'll have to pick a battery up for my multimeter.
To rule out the map sensor I put my jumper in the a/b ports while the car was running and according to the cel flashes its running rich(on more than off). If i unplug the map sensor it stays rich and starts to idle rough. I think it might be the 02 or ecm at this point according to the chart.
I'll check back once I test the 02 sensor