help rpms out of control
#1
help rpms out of control
i have a 94 ls. whn ever you start it the rpms will go to about 3500 the drop down to 1500ish then go back up to 3500. i talked to two mechanics one said it is my tps and one said it might be the idle adjust screw. i bought a new tps but didnt put it on yet and i adjusted the screw and it lowerd the rpms but now it goes from 1000 to 2200 rpms. if anyone has had this problem or please HELP!!!!!!!
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Re: help rpms out of control
how would you find the vacum hose leak??? I guess what i am trying to ask is what line would/could it be?
Also if its a coolant bubble is it alright to open the rad cap after the car has started to let the bubbles slowly come out???
Also if its a coolant bubble is it alright to open the rad cap after the car has started to let the bubbles slowly come out???
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#8
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Re: help rpms out of control
Originally Posted by losechange89
how would you find the vacum hose leak??? I guess what i am trying to ask is what line would/could it be?
Also if its a coolant bubble is it alright to open the rad cap after the car has started to let the bubbles slowly come out???
Also if its a coolant bubble is it alright to open the rad cap after the car has started to let the bubbles slowly come out???
as far as taking the rad cap off once warmed up I would take the cap off while the engine is cold and start the car letting the bubbles escape before there is too much pressure in the system and you get burned
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Re: help rpms out of control
yea sorry thats what i meant, just after start up to let the bubbles out......and i will check all hoses from intake to make sure they are nice and tight..
so failing that...what else could be wrong?? my rpms after about 5 min being on will go up to about 2500 and hold for a sec, then drop again to around 1000...
so failing that...what else could be wrong?? my rpms after about 5 min being on will go up to about 2500 and hold for a sec, then drop again to around 1000...
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Re: help rpms out of control
dont the tps and map have same plug?or i know theres 2 sensors that do(i think)i know obd2 does.i dunno if obd1 is the same..but i know if they are switched it will act goofy like that.
iff not get like a carb cleaner or somthin flamable and spray around tbody gsket,intake manifold gsket area and see if the rpm jumps wen u do.
iff not get like a carb cleaner or somthin flamable and spray around tbody gsket,intake manifold gsket area and see if the rpm jumps wen u do.
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