cleaning throttle body, and stalling problems - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

[email protected] · 10-03-2005, 07:17 PM

ok i searched and it seems to be a common problem. my engine dies when i put it in neutral, like my rpm drops too fast. its a sr20 btw. i noticed it usually drops in hot weather, so maybe is related to hot air. when i drive like early in the morning the rpm doesnt drop as quickly so it wont stall. so i cleaned out maf and today just cleaned out throttle body but my car was having problems. tell me if i was cleaning out the TB the right way or not.

i sprayed some TB cleaner into it while moving the butterfly valve manually for a few seconds. then when i would start the car it would have problems, like it wouldnt start unless i crank it for awhile and gave it some gas. and once it would turn on the idle would be rough for awhile and this think smoke started coming out from my exhuast. i would leave my car on for awhile to get rid of the smoke. then i started again with spraying the cleaner into my TB and turning it on again. is it normal that this happens in the beginning?

and can someone tell me where the coolant temp sensor is located? a picture would help cuz i cant tell where it is.

any help would be appreciated. thanks

A Spec Products · 10-03-2005, 07:22 PM

Quote:

Originally Posted by [email protected]

and can someone tell me where the coolant temp sensor is located? a picture would help cuz i cant tell where it is.

any help would be appreciated. thanks

coolant temp sensor is by where the upper radiator hose connects to the engine

it should have a red colored harness plug

SHIFT_control · 10-03-2005, 07:30 PM

You are definatley cleaning the TB the right way. Another trick is using an old toothbrush to get more of the carbon out. My old Pathfinder had the same problem, and amazingly enough the TB cleaning cured it.

[email protected] · 10-03-2005, 09:09 PM

Quote:

Originally Posted by A Spec Products

coolant temp sensor is by where the upper radiator hose connects to the engine

it should have a red colored harness plug

hmm cant find any red plug. i see a brown one. can anyone take a picture of where on the engine its located. and how exaclty would u clean the cts? would i spray cleaner on it or like use a clean cloth and just wipe the plug?
thanks for all the help guys

obsolete · 12-19-2008, 07:19 AM

Really old thread, sorry. But I have the same exact symptoms. Did you figure out why it wasn't starting right and blowing smoke? How is coolant temp related to this?

10-03-2005, 07:17 PM	#1
[email protected] Leaky Injector Join Date: Jan 2005 Location: so cal Age: 38 Posts: 95 Trader Rating: (0) Feedback Score: 0 reviews	cleaning throttle body, and stalling problems ok i searched and it seems to be a common problem. my engine dies when i put it in neutral, like my rpm drops too fast. its a sr20 btw. i noticed it usually drops in hot weather, so maybe is related to hot air. when i drive like early in the morning the rpm doesnt drop as quickly so it wont stall. so i cleaned out maf and today just cleaned out throttle body but my car was having problems. tell me if i was cleaning out the TB the right way or not. i sprayed some TB cleaner into it while moving the butterfly valve manually for a few seconds. then when i would start the car it would have problems, like it wouldnt start unless i crank it for awhile and gave it some gas. and once it would turn on the idle would be rough for awhile and this think smoke started coming out from my exhuast. i would leave my car on for awhile to get rid of the smoke. then i started again with spraying the cleaner into my TB and turning it on again. is it normal that this happens in the beginning? and can someone tell me where the coolant temp sensor is located? a picture would help cuz i cant tell where it is. any help would be appreciated. thanks

10-03-2005, 07:30 PM	#3
SHIFT_control Leaky Injector Join Date: Mar 2005 Location: Golden Posts: 110 Trader Rating: (0) Feedback Score: 0 reviews	You are definatley cleaning the TB the right way. Another trick is using an old toothbrush to get more of the carbon out. My old Pathfinder had the same problem, and amazingly enough the TB cleaning cured it. __________________ '93 Pathfinder SE daily driver '93 HB blue (under construction) '89 Celica GTS RIP

12-19-2008, 07:19 AM	#5
obsolete Zilvia Addict Join Date: Aug 2003 Location: NJ Age: 45 Posts: 717 Trader Rating: (8) Feedback Score: 8 reviews	Really old thread, sorry. But I have the same exact symptoms. Did you figure out why it wasn't starting right and blowing smoke? How is coolant temp related to this?