PDA

View Full Version : SR question


Slippin'eight-nine
10-30-2010, 03:58 PM
whatsup guys need some help so here goes..

cold start- the idle goes up to about 1500rpm (normal), but then after a minute or so it drops down to 1000 and starts to stumble bad. Black smoke starts coming out the exhaust indicating a rich mixture
So then i drove it hoping deep down maybe i could drive through the problem..but it bogged out when i tried to accelarate hard and backfired slighty
thoughts?
literally just changed the spark plugs before drive
the old ones were black across the board ruling out one faulty injector or coil pack
ive had the MAF connector come loose a few times before but the symptoms are way different and i had the pins redone with a pick to ensure a good fit along time ago
any help is appreciated and im willing to go back over anything listed above
motor is stock boost, exhaust mods only

fliprayzin240sx
10-31-2010, 07:09 AM
Runs fine when the engines cold but starts bogging and shit once the engine is warmed up? ECU water temp sensor taking the shit. Look on top of the thermotstat housing, you got 2 sensors on top of it. 1 2-prong and 1 1-prong sensor...change the 2-prong one off a fwd sr20.

Slippin'eight-nine
10-31-2010, 03:14 PM
thanks for the reply i will look into it and let you know!

rebornS14
10-31-2010, 03:17 PM
^ yea what he said.

Slippin'eight-nine
11-01-2010, 08:17 PM
Runs fine when the engines cold but starts bogging and shit once the engine is warmed up? ECU water temp sensor taking the shit. Look on top of the thermotstat housing, you got 2 sensors on top of it. 1 2-prong and 1 1-prong sensor...change the 2-prong one off a fwd sr20.

UPDATE:that was it! thanks for the quick and accurate reply!

fliprayzin240sx
11-02-2010, 03:15 AM
No problem...just double check your plugs again...they could be foul after running so rich.