Really??? more problems? HELP PROBLEMS AFTER STALL
10-06-2011, 06:13 PM
#1
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Really??? more problems? HELP PROBLEMS AFTER STALL Bought a yank 3600 stall and tci flexplate, have a basic mail order tune and it's been installed for 2 days. Car was fine except for redlining when i was wot from a stop. (i believed it was a tuning issue). Now however, it stays in first gear from 800-3600/4000 rpms. it wont shift until then and its more of a jerky shift. this is under light acceleration. Is my trans fucked up? Is it the tune? Is it the solenoid? is it the speed sensor? im so lost and pissed off I'm about to drive a my beautiful camaro off of a cliff. (well no but seriously!)
Car info:
1998 Camaro SS, 54,000 miles, 3600 stall (yank), tci flexplate, prc dual .650" valve springs, titanium seats and retainers, hardened chromoley pushrods, TSP 233/239 Camshaft, Pacesetter ceramic longtube headers, true duals with dynomax bullets, SLP Lid and Blackwing Filter.
please help asap. if u want give me a call, i trust u guys 703 881 6019
Car info:
1998 Camaro SS, 54,000 miles, 3600 stall (yank), tci flexplate, prc dual .650" valve springs, titanium seats and retainers, hardened chromoley pushrods, TSP 233/239 Camshaft, Pacesetter ceramic longtube headers, true duals with dynomax bullets, SLP Lid and Blackwing Filter.
please help asap. if u want give me a call, i trust u guys 703 881 6019
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10-07-2011, 02:29 PM
#8
If it was tuned, drove normal and now its driving like crap then its not the tune, tune problems will be evident from the sec the tune is put in. Normally a mail order tune is fine for a stall who tuned it?
10-07-2011, 03:56 PM
#9
Umm no a 3600 stall doesnt mean it wont lock till 3600 rpm. The stall speed refers to when you stab the pedal the rpms flash to 3600 before the converter puts all its power to the tires... Clutch lockup is determined by speed.
This is how it should be operating what changed between now and when it was working like this.
If it was tuned, drove normal and now its driving like crap then its not the tune, tune problems will be evident from the sec the tune is put in. Normally a mail order tune is fine for a stall who tuned it?
This is how it should be operating what changed between now and when it was working like this.
If it was tuned, drove normal and now its driving like crap then its not the tune, tune problems will be evident from the sec the tune is put in. Normally a mail order tune is fine for a stall who tuned it?
10-07-2011, 04:15 PM
#10
OK so I'm not really up on this auto stuff because most all of my cars were stick so help me out here. My 2800 stall will lock up at 2800 if I nail it, correct? and then If i am just driving normal in the city my car shifts in 2nd gear at about 2300 rpm's does that mean my stall is locked then , when it shifts?
When it shifts into 2nd at 2300 its just shifting into second. When you nail it from a stop the converter "flashes" to 2800 putting the engine into its power quicker. It happens real quick. This has nothing to do with lockup.
10-07-2011, 06:13 PM
#11
^^What he said think of the stall speed kind of like dropping the clutch. when you nail the throttle from a stop the rpms flash to the stall speed 2800,3600 etc and then just like dropping the clutch would do at that rpms it puts the power to the tires.
At speed the converter is basically a fluid coupling fluid is pumped from the transmission into the converter and this combined with the rotational power of the engine makes it spin. Now as you may think there is some efficiency loss here because the engine and transmission are linked by fluid flow essentially. at a set speed, usually around 40mph there a clutch inside the converter that locks the converter together so there is nearly 100% efficiency at this time you will be in 4th gear and when the converter locks it will look and feel almost like another shift with the rpms dropping.
At speed the converter is basically a fluid coupling fluid is pumped from the transmission into the converter and this combined with the rotational power of the engine makes it spin. Now as you may think there is some efficiency loss here because the engine and transmission are linked by fluid flow essentially. at a set speed, usually around 40mph there a clutch inside the converter that locks the converter together so there is nearly 100% efficiency at this time you will be in 4th gear and when the converter locks it will look and feel almost like another shift with the rpms dropping.
10-07-2011, 07:09 PM
#12
^^What he said think of the stall speed kind of like dropping the clutch. when you nail the throttle from a stop the rpms flash to the stall speed 2800,3600 etc and then just like dropping the clutch would do at that rpms it puts the power to the tires.
At speed the converter is basically a fluid coupling fluid is pumped from the transmission into the converter and this combined with the rotational power of the engine makes it spin. Now as you may think there is some efficiency loss here because the engine and transmission are linked by fluid flow essentially. at a set speed, usually around 40mph there a clutch inside the converter that locks the converter together so there is nearly 100% efficiency at this time you will be in 4th gear and when the converter locks it will look and feel almost like another shift with the rpms dropping.
At speed the converter is basically a fluid coupling fluid is pumped from the transmission into the converter and this combined with the rotational power of the engine makes it spin. Now as you may think there is some efficiency loss here because the engine and transmission are linked by fluid flow essentially. at a set speed, usually around 40mph there a clutch inside the converter that locks the converter together so there is nearly 100% efficiency at this time you will be in 4th gear and when the converter locks it will look and feel almost like another shift with the rpms dropping.
10-07-2011, 07:32 PM
#13
Its all dependant on throttle %. If your going above the set throttle percent for it to lock up then no it wont engage. Certain conditions have to be met for it to lock up.
Say your driving on a level road 50mph. the converter is locked(overdrive.) Then you have to go up a steep hill. Naturally you have to give it more throttle, if you go above that set perameter in the PCM it will un lock and just stay in 4th or downshift to 3rd or whatever. once you get up that hill and let off the gas slightly and cruise again at 50mph or whatever speed it will lock up again.
Stock pcm tables will never allow it to lock at full throttle, same with shifting into 4th gear. you have to let off slightly for it to happen. Or adjust the pcm tables. Lock up is designed for gas mileage and cruising on the highway.
get it a little more?
10-07-2011, 07:49 PM
#14
Its all dependant on throttle %. If your going above the set throttle percent for it to lock up then no it wont engage. Certain conditions have to be met for it to lock up.
Say your driving on a level road 50mph. the converter is locked(overdrive.) Then you have to go up a steep hill. Naturally you have to give it more throttle, if you go above that set perameter in the PCM it will un lock and just stay in 4th or downshift to 3rd or whatever. once you get up that hill and let off the gas slightly and cruise again at 50mph or whatever speed it will lock up again.
Stock pcm tables will never allow it to lock at full throttle, same with shifting into 4th gear. you have to let off slightly for it to happen. Or adjust the pcm tables. Lock up is designed for gas mileage and cruising on the highway.
get it a little more?
Say your driving on a level road 50mph. the converter is locked(overdrive.) Then you have to go up a steep hill. Naturally you have to give it more throttle, if you go above that set perameter in the PCM it will un lock and just stay in 4th or downshift to 3rd or whatever. once you get up that hill and let off the gas slightly and cruise again at 50mph or whatever speed it will lock up again.
Stock pcm tables will never allow it to lock at full throttle, same with shifting into 4th gear. you have to let off slightly for it to happen. Or adjust the pcm tables. Lock up is designed for gas mileage and cruising on the highway.
get it a little more?
OK so i had a Tune, what do i need to ask the Tuner so i will know exactly how it is all working? Thank You all for being so patient with me.
