car runs rough after a cleaning and cant figure it out!
03-17-2011, 07:15 PM
#1
car runs rough after a cleaning and cant figure it out!
So I had a coolant hose get a hole in it last night, so i fixed it and washed off all the coolant with a garden hose. ever since then my car will search for idle at times and when driving at a constant speed with the rpm's at anything under about 2400 after a few seconds the car will feel like it runs out of power, if i give it gas it will get worse for a second then all of a sudden pick up and go like normal.
So I figured I got a coil wet, well I replaced all 8 coils, maf, frps, and alternator with my buddies and no change. I also pulled it into work today and checked codes, there's no codes at all and it passes a koer test. Also tried putting the stock tune back on and same thing, then reflashed the tune back on and still no change. Also vacuum is good at a steady 18 and i sprayed ever single vac hose with carb clean and no change in idle. I am out of ideas fella's. what else is there it could be? only thing left i can think of is the tps but i cant get the stupid phillips screws out of the tb to change it.
So I figured I got a coil wet, well I replaced all 8 coils, maf, frps, and alternator with my buddies and no change. I also pulled it into work today and checked codes, there's no codes at all and it passes a koer test. Also tried putting the stock tune back on and same thing, then reflashed the tune back on and still no change. Also vacuum is good at a steady 18 and i sprayed ever single vac hose with carb clean and no change in idle. I am out of ideas fella's. what else is there it could be? only thing left i can think of is the tps but i cant get the stupid phillips screws out of the tb to change it.
03-17-2011, 07:24 PM
#2
2nd Gear Member
Join Date: May 2010
Location: mississippi
Posts: 386
So I had a coolant hose get a hole in it last night, so i fixed it and washed off all the coolant with a garden hose. ever since then my car will search for idle at times and when driving at a constant speed with the rpm's at anything under about 2400 after a few seconds the car will feel like it runs out of power, if i give it gas it will get worse for a second then all of a sudden pick up and go like normal.
So I figured I got a coil wet, well I replaced all 8 coils, maf, frps, and alternator with my buddies and no change. I also pulled it into work today and checked codes, there's no codes at all and it passes a koer test. Also tried putting the stock tune back on and same thing, then reflashed the tune back on and still no change. Also vacuum is good at a steady 18 and i sprayed ever single vac hose with carb clean and no change in idle. I am out of ideas fella's. what else is there it could be? only thing left i can think of is the tps but i cant get the stupid phillips screws out of the tb to change it.
So I figured I got a coil wet, well I replaced all 8 coils, maf, frps, and alternator with my buddies and no change. I also pulled it into work today and checked codes, there's no codes at all and it passes a koer test. Also tried putting the stock tune back on and same thing, then reflashed the tune back on and still no change. Also vacuum is good at a steady 18 and i sprayed ever single vac hose with carb clean and no change in idle. I am out of ideas fella's. what else is there it could be? only thing left i can think of is the tps but i cant get the stupid phillips screws out of the tb to change it.
03-17-2011, 07:31 PM
#3
already tried that, blew it all out, then sprayed carb cleaner in it and sprayed it out again. think it might have fouled out some plugs? it almost acts as if it's running real rich because it smells like it at times and feels like it kinda loads up when at a steady, low rpm speed, then when i give it gas to burn some of the fuel it cleans up some until it loads up again.
03-17-2011, 07:45 PM
#5
well they came off a car that ran perfectly fine before. and i replaced all 8 and it didn't change it at all, i couldn't of imagined that all 8 would of gone bad. also a bad coil should of gave me a code.
03-17-2011, 09:13 PM
#7
2nd Gear Member
Join Date: Sep 2010
Location: Phoenix, AZ
Posts: 395
I had one bad when i bought the car, and it never threw a code. Found it from process of elimination. But when i got them wet i had several bad, cause the car missed horribly and wouldn't rev past about 3k. It got a little better after sitting over night, but still missed.
03-17-2011, 09:53 PM
#8
03-17-2011, 10:19 PM
#10
3rd Gear Member
Join Date: Feb 2008
Location: Delaware
Posts: 801
why not just test the tps on the car? if you have a decent diagnostic computer it will tell you tps voltage through the obd port.
Otherwise, test voltage at the grey wire from the tps. Should vary from 0v closed to ~4.5v wot. I'm sure you already knew this, but could be quicker than swapping tps sensors.
Otherwise, test voltage at the grey wire from the tps. Should vary from 0v closed to ~4.5v wot. I'm sure you already knew this, but could be quicker than swapping tps sensors.