improper idle s4 - whats wrong?
#1
improper idle s4 - whats wrong?
Okay so, I just recently picked up an 88 GXL. it wouldnt start before, so i popped in some fresh gas and a new battery and BAM. powered up. it ram super shitty and had no power so i drove it around more and floored it and it did something happened and all of a sudden it had power like my other car!
So, after that things seemed to have settled. i did a steam clean, didnt change much so i changed the oil as everyone says. so now im stuck with a crazy *** idle, BUT! it runs!
here is a video of it running, maybe by the way its running you guys can tell me what it may be.
http://www.youtube.com/watch?v=nnE2G3XYlfw
So, after that things seemed to have settled. i did a steam clean, didnt change much so i changed the oil as everyone says. so now im stuck with a crazy *** idle, BUT! it runs!
here is a video of it running, maybe by the way its running you guys can tell me what it may be.
http://www.youtube.com/watch?v=nnE2G3XYlfw
#3
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that screw u used to rev it back it out my car was doing that also. on the top of the intake manifold that screw thats in the middle use that to adjust the idle that other 1 seems to make it do what urs is doing
#6
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Are all the accessory items in the off position when this occurs. Set the TPS to one volt. Also, place a piece of tape on your Variable Resistor and place a mark on the tape that corresponds with how the screw is currently set and then jumper the initial set coupler and start the car and slowly adjust the Resistor until it stops reving if at all. If this adjustment process does not work then adjust it back to how you had it set previously and remember to remove the jumper wire.
#7
i adjusted the TPS all the way out and it did nothing really. it went higher for the most part, but if i take the whole assembly and move it by hand as if i were closing the intake it goes down considerably, not quite an idle though. what are the odds of it being the BAC valve? i know that thing can cause some crazyness to happen.
OH! the other weird thing is if you push the clutch in the RPMs go up. let it out and they go back down to its "current idle"
OH! the other weird thing is if you push the clutch in the RPMs go up. let it out and they go back down to its "current idle"
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#8
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iTrader: (1)
i adjusted the TPS all the way out and it did nothing really. it went higher for the most part, but if i take the whole assembly and move it by hand as if i were closing the intake it goes down considerably, not quite an idle though. what are the odds of it being the BAC valve? i know that thing can cause some crazyness to happen.
OH! the other weird thing is if you push the clutch in the RPMs go up. let it out and they go back down to its "current idle"
OH! the other weird thing is if you push the clutch in the RPMs go up. let it out and they go back down to its "current idle"
#10
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iTrader: (1)
It's a two wire green plug located by the leading coil which is required to be jumpered to adjust the air adjust screw on top of the throttle body in addition to setting the Variable resistor. Not doing so will cause the BAC to offset any adjustment you try to make and make adjusting the idle a futile attempt.
#12
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iTrader: (1)
If your idle is still too high/bumpy either the Variable resistor is in need of adjustment, thermowax is not fully disengaging from the roller cam, there is a vacuum leak, throttle cable is too tight, or primary throttle plates are opened too much and in need of adjustment or a combination of the above.
#14
So I cleaned my BAC valve today. Got it back in the car and had a bit of an issue. The car wont stay running at all now. The only thing I can think of is the fact that there is air in those coolant hoses and its choking it for some reason..besides that i'm stumped...
Actually I just had a thought! cleaning the BAC valve may have fixed my issue...I need to readjust my TPS now to keep it running. Is that plausible? I currently have the TPS screwed pretty far in.
Actually I just had a thought! cleaning the BAC valve may have fixed my issue...I need to readjust my TPS now to keep it running. Is that plausible? I currently have the TPS screwed pretty far in.
#15
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iTrader: (1)
So I cleaned my BAC valve today. Got it back in the car and had a bit of an issue. The car wont stay running at all now. The only thing I can think of is the fact that there is air in those coolant hoses and its choking it for some reason..besides that i'm stumped...
Actually I just had a thought! cleaning the BAC valve may have fixed my issue...I need to readjust my TPS now to keep it running. Is that plausible? I currently have the TPS screwed pretty far in.
Actually I just had a thought! cleaning the BAC valve may have fixed my issue...I need to readjust my TPS now to keep it running. Is that plausible? I currently have the TPS screwed pretty far in.
#17
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iTrader: (1)
TPS is to be plugged in when setting to 1 volt. Green/Red wire gets the red volt meter terminal with the black terminal going to ground such as the alternator housing or negative battery terminal. When you look at the voltage reading of the meter and turn the screw you'll know whether you're going in the right direction or not. When it's set to one volt as you move the throttle linkage to where it doesn't come in contact with the TPS any more the voltage should be 5 volts (TPS is fully extended).
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