problem with TB and my car going into safe mode...URGENT

[EL MAMITO USMC]

hi guys i have a prob. my car (SENTRA SER SPEC V 03)aparently is kicking in the safe mode to often and is leaving my wife strangle all the time(Im currently deployed to Afganistan). she took it to the mec and he said that the code is for the TB(they said el modulo de aceleracion) which i translate to Tb since i had that problem previously. also the battery is "leaking accid and eating the terminals". i told her that we just needed a new batt and that would eliminate the TB problem. most of the times when that used to happen to me i just nicely clean the terminals and that would take care of the problem. but what i dont get is why the "acid" is coming out of the batt and damaging the terminals. any sugestions guys. the batt is not even 3 years old. im looking for a optima one or posibly a new(used) TB. this is the second one that i got since the first one that i had the TPS was kinda bad so i got this used one and it worked until i deployed, you know how this is , as soon as you leave , everything happens to the car. any help guys would be deeply apreciated...


Modified by EL MAMITO USMC at 10:00 AM 3/4/2009

[nametakennow]

What year SE-R?

[EL MAMITO USMC]

What year SE-R?

fixed, thanks

[EL MAMITO USMC]

c'mon guys, i still need help or sugestions

[nissangirl74]

The battery and the terminals need to be replaced. The two most common things that make a battery boil over are over charging or undercharging. When the battery is being replaced, have the alternator checked too. You may not be getting the proper output from it either.

[nametakennow]

^Good call.

I doubt the two are related. The TPS is integrated into the TB on B15 SE-Rs. It's a common failure and somewhat expensive due to said integrated design. If it's reading incorrectly it could cause the ECU to go into safe mode. Might be able to find one out of a junkyard for cheaper.

[EL MAMITO USMC]

^Good call.

I doubt the two are related. The TPS is integrated into the TB on B15 SE-Rs. It's a common failure and somewhat expensive due to said integrated design. If it's reading incorrectly it could cause the ECU to go into safe mode. Might be able to find one out of a junkyard for cheaper.

well actually we did that , i got a new one from the nissan and had them install it. and it lasted around 6-8 months working properly but now is doing it again. i had to replace the crank sensor, but still does the safe mode and now even while driving. so the tech said that the next thing we need to replace is the harness. that like 680 harnes plus 4 hours of labor. to much money for me to put in the sentra. ill guess ill stay like this...

[nissangirl74]

If I were you, I'd check on someone besides the dealer working on the car. Their hourly rates can be stupid expensive and turn a manageable repair bill into a financial nightmare. $60-$100 per hour is way too much IMO.

well actually we did that , i got a new one from the nissan and had them install it. and it lasted around 6-8 months working properly but now is doing it again

Just to clarify, what did you replace?

[EL MAMITO USMC]

If I were you, I'd check on someone besides the dealer working on the car. Their hourly rates can be stupid expensive and turn a manageable repair bill into a financial nightmare. $60-$100 per hour is way too much IMO. Just to clarify, what did you replace?

first was the Throtle body,at the dealer ship in YUma. then about 2 weeks ago here in NM, i took it to get program again the TB. and they said that the code for the tb was not showing but yes one for the crank sensor. so i went buy it and installed my self. took it back to nissan to erase the code. and like not even 10 mins later the car started again with the rpms idle ing at 1100rpm and then going up and down to 1800rpm . so it like old cars when the tps is bad that the rpms raises and lowers it. and creates a bad iddle. thats whats happening to the car.

and besides that i could be driving and sudenly bump, hits the safe mode, rigth in the middle of driving the car. i have to turn it off and start again while moving so i dont cause an accident.

i hope i explain my self clearly.

and the only reason i dont sell the car is because i just finish paying it and im trying to get a house so i dont want to jeopardise my credit. if not i would have burn it long time ago..

the tech at nissan said that the next thing that it migth be bad is the harness. and that cost 680 with discount.. just to much for me rigth now..

any ideas or sugestions are more than welcome

[nametakennow]

IIRC the crank sensor was a recall on some of B15 SE-Rs. Doesn't really explain the idle fluctuations, though it would explain the safe mode.

Idle fluctuations could simply be a vac leak as well. TPS seems more likely.

[EL MAMITO USMC]

IIRC the crank sensor was a recall on some of B15 SE-Rs. Doesn't really explain the idle fluctuations, though it would explain the safe mode.

Idle fluctuations could simply be a vac leak as well. TPS seems more likely.

i just change it..

[nametakennow]

Missed that part, somehow.

Check for vac leaks, then. Also call the dealer and make sure your car wasn't under the crank sensor recall.