WTF could i have done to my car???
07-03-2005, 05:57 PM
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WTF could i have done to my car??? Well long story short i put in a set of solid motor mounts. Took me a total of three nights working a few hours a night and was a PITA to say the least.
Well after it was all done, i took the car for a drive. It is down on power A LOT!!! And if i start driving and then put it back in neutral, the rpms hang at 2000 and wont come down until i am at a complete stop with the e-brake on and then they come down to about 1500 or so. Could i have erased the iac's ability to function properly when i disconnected my battery?
I am not throwing a SES light, and am also getting a really weird vibration that i think is exhaust related (i think the header is hitting the k-member).
Or maybe it could be the exhaust now resting on the torque arm.
Any ideas on what might have happened? At one point i set the motor down on the k-member with only passenger side motor mount installed. could it have crushed the front of the pan up? Maybe the crank is aerating the oil there? Maybe i pinched a wire to a sensor that wouldn't throw a check engine light?
What is going on?
Nate
Well after it was all done, i took the car for a drive. It is down on power A LOT!!! And if i start driving and then put it back in neutral, the rpms hang at 2000 and wont come down until i am at a complete stop with the e-brake on and then they come down to about 1500 or so. Could i have erased the iac's ability to function properly when i disconnected my battery?
I am not throwing a SES light, and am also getting a really weird vibration that i think is exhaust related (i think the header is hitting the k-member).
Or maybe it could be the exhaust now resting on the torque arm.
Any ideas on what might have happened? At one point i set the motor down on the k-member with only passenger side motor mount installed. could it have crushed the front of the pan up? Maybe the crank is aerating the oil there? Maybe i pinched a wire to a sensor that wouldn't throw a check engine light?
What is going on?
Nate
07-03-2005, 07:33 PM
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not a trailered drag car, you're saying it is knock retard only??? why in the world would my rpm's hang like they do then???
Also the car is tuned speed density open loop (not fully tuned yet) and i believe when my buddy was tuning my car he reset the knock retard so that it would pull 0 degrees (maybe im talking out of my ***?)
Nate
Also the car is tuned speed density open loop (not fully tuned yet) and i believe when my buddy was tuning my car he reset the knock retard so that it would pull 0 degrees (maybe im talking out of my ***?)
Nate
07-04-2005, 12:53 AM
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Unfortunately my buddy took off for a 6 month cruise (We're all navy chucks) and wont be back until november.
My battery just died though and after doing some serious searching that would hopefully stop the weird idle issue.
Once i get efilive here in a few weeks i'll just tune out the knock sensors entirely, hell i've never seen it knock before today.
Nate
My battery just died though and after doing some serious searching that would hopefully stop the weird idle issue.
Once i get efilive here in a few weeks i'll just tune out the knock sensors entirely, hell i've never seen it knock before today.
Nate
07-04-2005, 10:53 AM
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I made my solid mounts out of aluminum with an 1/8" thick hard rubber washer on top.
With 11.5:1 compression, I have logged 20 times at WOT and have not seen a knock yet.
Maybe you tweaked to O2 sensors or the wiring harness somewhere.
With 11.5:1 compression, I have logged 20 times at WOT and have not seen a knock yet.
Maybe you tweaked to O2 sensors or the wiring harness somewhere.
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07-04-2005, 04:42 PM
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Originally Posted by racecar
I made my solid mounts out of aluminum with an 1/8" thick hard rubber washer on top.
With 11.5:1 compression, I have logged 20 times at WOT and have not seen a knock yet.
Maybe you tweaked to O2 sensors or the wiring harness somewhere.
With 11.5:1 compression, I have logged 20 times at WOT and have not seen a knock yet.
Maybe you tweaked to O2 sensors or the wiring harness somewhere.
Also i think it's my alternator that took a **** because when i do get my car started it only shows 10.5 volts on the dummy gauge.
BTW, what type of numbers are you making at the wheels???
Nate
07-04-2005, 04:58 PM
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Originally Posted by WS6FirebirdTA00
i got no knock when my exhaust hit the k member
nate
07-04-2005, 05:29 PM
#11
im just saying though that the exhaust hitting didnt effect mine, i went with the poly motor mounts so its was pretty stiff, nothing like solids but pretty stiff. i have yet to see timing pulled from exhaust hitting on any of the cars i have messed with. there would have to be some high frequency vibrations to trip the snesors i would think, nothing like a low pitch knock
07-04-2005, 06:24 PM
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what would happen if my electrical system took a ****? Say the alternator goes out on me and im running at 11 or 12 volts? Would that weaken the spark and in turn lose power and cause it to break up pretty bad? That's what im thinking it is
Nate
Nate
07-04-2005, 06:58 PM
#14
That and the fuel pump and injectors wouldn't be working right either. That happened on my buddy's car one time when the alternator went out, we were driving on battery power as far as we could and it felt like the car was running on 1 cylinder. We were chugging along at 10 mph in a 45 with the car jerking back and forth. That was some funny ****.
07-04-2005, 08:01 PM
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Originally Posted by P Mack
That and the fuel pump and injectors wouldn't be working right either. That happened on my buddy's car one time when the alternator went out, we were driving on battery power as far as we could and it felt like the car was running on 1 cylinder. We were chugging along at 10 mph in a 45 with the car jerking back and forth. That was some funny ****.
Nate
07-04-2005, 10:03 PM
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I Fixed it! I am an idiot and ripped out the voltage regulator wire. Repinned the connector and ran a longer wire and now it runs fine!
Thanks for all of your help guys!
Nate
Thanks for all of your help guys!
Nate
07-06-2005, 02:30 PM
#18
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Scan that thing and see if you get any knocks. I don't think that solid mounts will have any effect. I was concerned that my forged pistons would cause knock but not a one yet. At first I was putting in 5 gallons of 104 unleaded race fuel in every tank. Now it is straight super unleaded and still no knocks with 11.5 to 1. The chamber design of the LS6 head must be awesome. Dyno numbers later!!