my car is an automatic, lately when accel.. from a stop the car is very sluggish even when depressing the pedal quite a way down.. like it's bogging down.. same if I start in first or drive. done the self diagnosis with the engine light and get code 55 ( no malfunction ) and also get the Oxy sensor OK code ( 5 times in 10 seconds ) any thoughts would be really great... Thanks.... something I should mention which might help someone diagnose the problem is that the car accellarates normally when it is cold... the oxy sensor which was my first suspect because according to the Chilton manual the oxy sensor is out of the loop when car is warming up. I have cleaned the throttle valve assy..
and changed the air filter ..any help ??? I'm afraid to take it to dealer, first problem with car since purchase in January..anybody know about White Rock Nissan .. Thanks again

 

sounds like another about-to-die tranny. best to check tranny fluid and engine oil. your clutch could be slipping and that means a tranny rebuilt

 

Thanks for your reply, car is automatic so no clutch,engine is bogging down , no accel.. takes a few seconds to rev up.. any other thoughts apprecciated

 

Does the colour of your automatic fluid look nice and red or is it a brownish colour? It should look nice a red and not smelled burnt (BTW - An automatic does have a clutch just not in the traditional sense)

Another thing too check could be your air filter. If you have a VE motor these do suffer from "Heat Stroke", but I don't know mnuch about this as I have a VG.

Try some fuel system cleaner also.

Brent.

 

Check your Fuel Inkectors... this is becoming classic.

 

thanks for your help , I will check the tranny fluid as suggested. I have a VE motor and have changed the air filter.It seems if the engine is running lean on initial accel.. much like a malfunctioning accelarater pump ( I'm showing my age )once its going everything seems fine and tranny shifts OK..??????? cheers

 

Have you changed to a non OEM panel filter? I had nothing but problems when I changed to a K&N panel filter. The ECU would lean the car out at idle, OK at WOT. Could also be a clogged fuel filter.

Has your fuel consumption changed for the better or worse in recent times?

Brent

 

could it be it just needs a tune-up, mines was sluggish, then i changed the spark plugs and fuel filter. and now it runs as good as it ever has

 

thanks for reply, I have pulled a couple of plugs and they look fine , the fuel filter is something I have not looked at.. something I should mention which might help someone diagnose the problem is that the car accellarates normally when it is cold... the code comes back ok for the oxy sensor which was my first suspect because according to the Chilton manual the oxy sensor is out of the loop when car is warming up. I have cleaned the throttle valve assy..
any help ??? I'm afraid to take it to dealer, first problem with car since purchase in January..anybody know about White Rock Nissan .. Thanks again

 

I have the same prob w/ my 92SE Auto.... I took it to my Nissan dealer and they diagonosed it as a blown tranny. He said that the trany is in a "failsafe" mode and that it is starting out in 2nd gear (hence the poor acceleration from start). He told me that when the fluid is cold, it will run fine, but as soon as the fluid warms up w/ the car it will break down and cause the problem. I'm going to get a second opinion from another shop as well as flush the Tranny fluid as a temp fix. I just bought the car and can't stomach an $1800 repair right now....

 

I thought there was some form of visual indicator lamp for when the tranny is in fail safe mode?

92SE, I know this is going to sound stupid, but if you have the 'Power / Normal / Hold' switch just below your stereo, check to make sure it isn't in the Hold position.

Just a thought.

 

Failsafe mode starts the car off in 3rd gear, not second (at least on the VG)

As for the sluggishness, this is becoming a common problem and it appears that the MAF is the culprit. My 92 SE accelerates fine when cold, but is more sluggish when warmed up. If I can, I want to get ahold of a used MAF and try it out. I asked in another post if there is a way to clean this device.

 

Failsafe mode starts the car off in 3rd gear, not second (at least on the VG)

As for the sluggishness, this is becoming a common problem and it appears that the MAF is the culprit. My 92 SE accelerates fine when cold, but is more sluggish when warmed up. If I can, I want to get ahold of a used MAF and try it out. I asked in another post if there is a way to clean this device.