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Car Dies when i push the brake pedal???

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Old 08-27-08, 09:29 PM
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1JZ300
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Default Car Dies when i push the brake pedal???

I have a big problem i think its electrical and im not sure. I replaced my wideband and i think i wired it up wrong. So heres the problem...

WHen i jump the car(since it wont start on its own or hold a charge in the battery) it runs fine, as soon as push the brakes........the car dies..........as soonas i turn my headlights on........the car dies........i replaced the alternator and the battery, the battery keeps getting drained and wont hold a charge..............HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Old 08-27-08, 09:54 PM
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2jzlex
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Answer these questions:


What do you have your wideband spliced into as a 12v ignition source?
How many volts are you putting out at idle?
What is your vaccuum at idle?
Old 08-27-08, 10:48 PM
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1JZ300
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I spliced the wideband into my ignition wire.....
not sure about the volts.....
vaccuum at idle is 500( i use the Defi boost gauge and it reads 500)
Old 08-27-08, 10:57 PM
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Originally Posted by 1JZ300
I spliced the wideband into my ignition wire.....
not sure about the volts.....
vaccuum at idle is 500( i use the Defi boost gauge and it reads 500)

Hmmm.. well 500 is definately not mercury so I am not sure what that converts to. When you say ignition wire do you mean your key ignition wire? Or some other random ignition source?

Did this happen immediately after your wideband install? Like the next time you started it up it started going funny? Did you wire it differently than before?
Old 08-27-08, 11:57 PM
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tcd300
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oki i had something similar to this problem you need to check your wiring because when i turn on my head lights it turns off my car because my wires were melted together with another wire which made it crank the car every time i tried to turn on my head lights. so yeahhh better check on that wiring
Old 08-28-08, 07:49 AM
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1JZ300
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well it happened right after i installed the wideband and NO i did not wire the new one the same...and yes the Key ignition wire......

im so irritated with this!!!!!! i wanna just sell it hahahahahhha.......thanks so far for you help guys...ill check the wiring!!
Old 08-28-08, 08:32 AM
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Sciethen
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Here's a quick experience I just went through:

Symptoms: Anything electrical caused the car to either die or "black out" a moment; putting a blinker on, touching the breaks (thus rear lights coming on), rolling down both windows at the same time, etc. all caused the same thing.

Problem: Thinking it was the battery connector (positive wire), I ran in circled trying to find the problem. Eventually I had someone take out the starter, and low-and-behold the positive connector was literally melted. The wire had such a poor connection that it heated up constantly and eventually melted the threads. Apparently whoever installed the starter simply didn't tighten the connector on very well, so it got lose and voila.

Solution: For now, I just had the guy re-attach the connector. It runs perfectly fine now, but I should really just buy a new (or refurbished) starter when I can, or go through the same problems later down the line.

Hope that helps! BTW the starter is easy enough to take out if you can get a lift, and only takes 20 or 30 minutes.
Old 08-28-08, 12:12 PM
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2jzlex
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1jz, what you need to do is get yourself a 12v relay. Wire it up, and run your wideband 12v ignition source off of that relay. This way, you have a dedicated source for your wideband that will be directly fed by battery voltage when the car is running.

O yeah and here is a hint. Try unhooking your wideband, if the problem stops, you know you have wired it wrong and that is your problem.
Old 08-28-08, 01:33 PM
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Hey E,

Check your battery terminals. They definitely need to be replaced
Old 08-29-08, 03:22 AM
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1JZ300
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I Replaced my battery and the connectors, im going to check the starter connectors tonight...........im going to rewire all my gauges and run a POS and NEG directly from the battery no splicing into the ignition anymore...thanks for all your help and please keep them coming
Old 08-29-08, 10:33 AM
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Sigh.... You cant do that 1jz, it will complete the circuit and they will always be on....Get. A. Relay.
Old 08-29-08, 12:04 PM
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1JZ300
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relay got it!
Old 08-30-08, 08:03 AM
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1JZ300
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well guys i rewired all my gauges and still NOTHING! this sucks...

i dont even know where my starter is, can you post a pic bro?? thanks alot!
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