Volvo 850 Made from 1993 to 1997, this Volvo line was available in both a wagon and a sedan, both with were graced with several trim levels.

Finally fixed the damn throttle problem and ABS

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Old Apr 11, 2005 | 10:55 PM
  #1  
knight rider's Avatar
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Default Finally fixed the damn throttle problem and ABS

So the whole time this problem has existed, and after $1100 in parts and diagnostic, turns out it was a bad connection in the MAF plug. The guy that had the car before me did a bad job trying to fix the connection and doubled the wires over and ziptied it. Now that my mechanic rewired it and put in new dye electric grease, whalaa the problem is fixed. And the ABS TRAC light was from a severed wire in the front passenger side ABS brake module. $15 part from the junkyard. Car is all good. You never know how simple it can be.
 
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Old Apr 11, 2005 | 11:58 PM
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alecw81's Avatar
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Default RE: Finally fixed the damn throttle problem and ABS

After having what I thought were big problems turn out to be nothing more than poor wiring or dirty connections, I've made that my first step when trouble-shooting. A decent multi-meter and the knowledge of how to properly use it can save you TONS of money in the long run.
 
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Old Apr 12, 2005 | 01:37 AM
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tech's Avatar
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Default RE: Finally fixed the damn throttle problem and ABS

Im glad you finally got it.I forget exactly what we went over.I think we talked about the mass flow but missed the wiring.
 
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Old Apr 13, 2005 | 01:18 AM
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Default RE: Finally fixed the damn throttle problem and ABS

I also have ABS/TRACS light on. Are there abs/tracs sensors at each wheel I should also check, possibly before I replace the module under the master cylinder? Where are the sensors at each wheel located?
 
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Old Apr 13, 2005 | 01:39 AM
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tech's Avatar
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Default RE: Finally fixed the damn throttle problem and ABS

You can check but im 99% sure the module is fried.The front ones should be mounted in the top of the spindle assy.Look for a wire coming from the body of the car to the hub.

The rear ones go into the back of the hub from the back towards the front.Follow the wire as well.
 
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Old Apr 13, 2005 | 10:39 PM
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knight rider's Avatar
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Default RE: Finally fixed the damn throttle problem and ABS

Remember Tech, throttle hickup. Replaced fuel pump, plug wires, plugs, MAF, Rotor button and cap, vaccum lines, relays, think that's about it. It cost like $1000 in parts and all along it was an F'd up connection. Tested though and the plug was getting good voltage, just the connection was bad. Oh well, at least all those other parts won't go bad, and the car runs perfect. So damn fast with the IPD comp. and exhaust. only thing that sux now is the subframe bushing is creaking a little and is too much work too replace. Think I could wedge something like a thin piece of metal or something similar in there while prying it apart too prevent the noise?
 
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Old Apr 14, 2005 | 12:07 AM
  #7  
tech's Avatar
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Default RE: Finally fixed the damn throttle problem and ABS

Just give that info out while selling it.
Are you sure it isn't the upper spring seat?
 
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