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E46 Xi Forum
The E46 XI was produced from 01-05 in sedan and touring body styles. Powered by either a 2.5L inline 6 in the 325xi or a 3.0L inline 6 330xi. Discuss all thing about BMW AWD E46 'Xi' here.

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Old 07-16-2019, 05:08 PM   #1
Nathan325xi
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Join Date: Aug 2018
Posts: 19
No throttle response whatsoever 02 325xi manual

Hey guys, I've been slowly but surely fixing up my 325xi over the last 11 months, working on it when I have time between school and work, finally back on the road after a new clutch, oil pan gasket, front axles, starter and a ton of other things I can't remember off the top of my head.

The issue I'm having is now that it's back on the road I'm having a reoccurring issue where seemingly randomly while driving the trifecta of lights pops on, traction control, brake light, and abs light kick on, and the car is fine until it shuts off, and on restarting it I have absolutely no throttle response whatsoever.

I've checked the live data and the car knows the throttle pedal is being pressed, it just doesn't open the throttle, and I'm leaning towards the throttle itself not being the problem because until those lights kick on it works fine. The car will still turn on, I can still move it, albeit at idle speeds, and everything seems normal other than those 3 lights and the lack of throttle response.

If I recalibrate the steering angle sensor the lights will go off, the throttle works again and I have no issues, until the lights pop back on and suddenly I know I'm going to have an issue. I don't have the proper cable/software to reset the sensor myself so it's not like I can just keep my laptop in my car and reset it every time it needs to be done, I have to have a friend come over with his laptop and cable and reset it for me, which has been an inconvenience for the both of us.

If anyone has any ideas on sensors to replace, grounds or fuses to check, any software problems that could be causing this, really anything, I'm looking to get this fixed as soon as possible and have had no luck fixing it on my own. Any ideas or fixes anyone knows of would be greatly appreciated because I've tried just about everything I can think of, including pulling all of the abs/traction control related fuses.
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Old 07-20-2019, 08:20 PM   #2
WilloCO
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Join Date: Jan 2017
Location: Colorado
Posts: 646
My Ride: '05 330xi 6 speed
Hmmmm.

It sounds like you're pissing off traction control so much that it's killing throttle.

When I redid my front suspension I got the trifecta, I had to give it an alignment by hand to get it to stop, then got my alignment done.
Eyeball it, maybe you have something really off.

Second, the car has wheel speed sensors on all four wheels. You did axles... Are your sensors seated properly? They are hall sensors and need to be in the right position to work. Same sensors for ABS and wheel speed, which are also used for traction control.
You can get a INPA compatible cable super cheap, get one.
Also, I'm a big fan of dielectric grease on electric connections, good idea if you swap sensors out.
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05 330xi 6 speed
RIP: 86 e30 w/E36 M3 suspension build
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