1998 Pontiac transport mini van 3.4 V6.
Warning lights = check engine light.
Codes P0187..P0122...P0420 PD
Replaced transmission vacuum modulator.
Question = Okay. I stopped to get gas at the station. My car was running
perfectly before then. Started car again and car would not move in drive even
though the rpms were high. Placed car in first gear and lightly stepped on gas
pedal as car slowly moved. After slowly moving i have to go from first to
second and lightly step on the gas. If there is too much pressure on the pedal
the rpms will rev up high and the gear will not engage. With light pressure the
gear will engage and accelerate as normal. Then i switch from second to third
and car will maintain same speed and will increase with light pressure on gas
pedal. If i place too much force again rpms will rev high and gear will seem as
if it is not engaged. Placed car from third into drive and current speed will
remain the same and increase with light gas pedal pressure. Once again too
much pedal force and it revs at high rpms again and will not stay engaged(or
feels like it). Tranny fluid is at normal level requirements!
And red in color. Tranny fluid does not smell burned. Reverse works fine with
no problems. Replaced PCV VALVE and checked vacuum line hose for
cracks or leaks. None found. The next step i am considering is replacing
tranny fluid and filter. Then possibly testing tranny solenoids?
Warning lights = check engine light.
Codes P0187..P0122...P0420 PD
Replaced transmission vacuum modulator.
Question = Okay. I stopped to get gas at the station. My car was running
perfectly before then. Started car again and car would not move in drive even
though the rpms were high. Placed car in first gear and lightly stepped on gas
pedal as car slowly moved. After slowly moving i have to go from first to
second and lightly step on the gas. If there is too much pressure on the pedal
the rpms will rev up high and the gear will not engage. With light pressure the
gear will engage and accelerate as normal. Then i switch from second to third
and car will maintain same speed and will increase with light pressure on gas
pedal. If i place too much force again rpms will rev high and gear will seem as
if it is not engaged. Placed car from third into drive and current speed will
remain the same and increase with light gas pedal pressure. Once again too
much pedal force and it revs at high rpms again and will not stay engaged(or
feels like it). Tranny fluid is at normal level requirements!
And red in color. Tranny fluid does not smell burned. Reverse works fine with
no problems. Replaced PCV VALVE and checked vacuum line hose for
cracks or leaks. None found. The next step i am considering is replacing
tranny fluid and filter. Then possibly testing tranny solenoids?
Answer:
Well, just sounds like the transmission slipping and needs to come out and get repaired or
replaced. Solenoids would not do this except for the pressure control solenoid. Line pressure
would need to be checked to determine this..
Hitting the gas harder and it wont move means something internally is slipping. You could
remove the pan and change the filter and fluid, but that will most likely not help, other than give
you an idea if there is debre in the bottom of the pan.
A failed forward sprag, clutch assembly, sunshell, or other hard part is likely. Debre would be
throughout and also in the valve body, which may be some of the cause of your problems.
Well, just sounds like the transmission slipping and needs to come out and get repaired or
replaced. Solenoids would not do this except for the pressure control solenoid. Line pressure
would need to be checked to determine this..
Hitting the gas harder and it wont move means something internally is slipping. You could
remove the pan and change the filter and fluid, but that will most likely not help, other than give
you an idea if there is debre in the bottom of the pan.
A failed forward sprag, clutch assembly, sunshell, or other hard part is likely. Debre would be
throughout and also in the valve body, which may be some of the cause of your problems.
