What da prolem is? III

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What da prolem is? III

Unread postby decipha » Sun Nov 23, 2014 10:19 pm

Said vehicle is a 2005 bmw 700 series

One cold morning I started the engine and ran back inside to let it warm up while staying in the comfort of my warm house, same as i do everyday. I ran back out to the car 20 minutes later to go to work and the car would not drive and the check engine light was on. I shut it off and started it back up. Car seemed to run fine, i put in drive to leave and nothing it just idles.

I had a mechanic come out to look at it and he said the check engine light was on for a a faulty throttle pedal/throttle position sensor. Great! that makes perfect sense. I had a friend from work replace the pedal for only the cost of the part and still the car will not drive and the check engine light is still on.

Im now being told its a wiring issue from the pedal to the ecu.

As reluctant as I was to spend the amount of money bmw wanted for the harness to get it replaced i opted for the next best option. The guy from work ran 5 new wires from the pedal direct to the ecu and verified they were all functioning as designed. The voltages went from hi to low and low to high just as outlines in the testing and diagnostics specifications. Still no dice problem remains.

So I called the dealership and talked to the head tech there. He said its due to a bad ecu, the signal is going to the ecu but its not reading it... Just great its going to be $$$$ extra pricey

Before i spent the money to replace the ecu and get it reprogrammed by the dealer for an ADDITIONAL fee even though im buying it direct from the dealer, I decided to get a second opinion. I find it odd that the ecu just died for no apparent reason while the csr was warming up but works perfectly fine otherwise. I was talking to a girlfriend at work and she told me to check with a guy from EFIDynoTuning to make sure I dont get ripped.

(I helped her friend out a few years back when her husband passed away and had a project car half completed with missing parts and other parts scattered all over the attic shed backyard trunk under the house you name it. She contacted me to see what all needed to get finished and bought to go completed so she could drive it. It was her hisbands car when they went on their first date, got married, etc... blah blah blah a buncha sentimental value)

Back to the issue though.

A second opinion is always welcome so thats what I did. A very professional and handsome young man came and looked at the car. He told me the problem was that .............. so he fixed it right then and there and I driving my car again.

Its been 3 years and not a single hiccup since.



What was the problem?
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Re: Cause of Carnage III

Unread postby red5.0fogger » Mon Nov 24, 2014 5:31 am

Coil packs being unplugged by engine torquing as it goes in gear?
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Re: Cause of Carnage III

Unread postby decipha » Mon Nov 24, 2014 2:29 pm

lol no not even close, the engine doesn't misfire or anything the pedal just doesn't do anything at all, almost as though the pedal is unplugged but it logs perfectly fine in the ecu
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91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
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00 Lincoln LS - Luanda
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00 Explorer 5L - Bernyce

Re: Cause of Carnage III

Unread postby red5.0fogger » Mon Nov 24, 2014 3:07 pm

based on other posts i'm thinking of weird stuff. Is the part specific to BMW or all cars have it?
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Re: Cause of Carnage III

Unread postby decipha » Mon Nov 24, 2014 3:16 pm

ha.. specific to BMW
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91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
95 auto Aisha
Vehicle 2 Information: Others:
00 Lincoln LS - Luanda
98 Camaro SS - Bounquisha
02 Harley F-150 - Sasasha
03 Marauder - DyShyKy
00 Explorer 5L - Bernyce

Re: Cause of Carnage III

Unread postby YaBoyHalle » Mon Nov 24, 2014 7:35 pm

don't the beamers have an electronically opening throttle body? maybe the servo went out. if it's mechanical, the linkage could be loose\broken. otherwise, could be the anti theft system. bad maf/map.
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Re: Cause of Carnage III

Unread postby decipha » Mon Nov 24, 2014 7:42 pm

yes its drive by wire, the throttle motor was fine no issues, keep in mind the ecu has throttle blade position feedback and would throw a specific code for that... No issues there

anti theft disables the coils and injectors, engine wouldnt run with a theft fault

maf is fine no issues there
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decipha
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Joined: Mon Jul 15, 2013 5:29 pm
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Vehicle Information: Supercoupin' x10
90 (4x 5spds) - Dante, Ruby, Daja, Ava
91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
95 auto Aisha
Vehicle 2 Information: Others:
00 Lincoln LS - Luanda
98 Camaro SS - Bounquisha
02 Harley F-150 - Sasasha
03 Marauder - DyShyKy
00 Explorer 5L - Bernyce

Re: Cause of Carnage III

Unread postby YaBoyHalle » Mon Nov 24, 2014 7:47 pm

hmm. bad engine/eec ground? being that it is a bmw, i'd expect only ALL of the wiring system would fail. was fuel pressure acceptable?
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Re: Cause of Carnage III

Unread postby decipha » Mon Nov 24, 2014 7:49 pm

all grounds checked out fine

fuel pressure was right at spec too
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decipha
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Posts: 15679
Joined: Mon Jul 15, 2013 5:29 pm
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90 (4x 5spds) - Dante, Ruby, Daja, Ava
91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
95 auto Aisha
Vehicle 2 Information: Others:
00 Lincoln LS - Luanda
98 Camaro SS - Bounquisha
02 Harley F-150 - Sasasha
03 Marauder - DyShyKy
00 Explorer 5L - Bernyce

Re: Cause of Carnage III

Unread postby YaBoyHalle » Mon Nov 24, 2014 7:55 pm

is it the engine with a supercharger? belt fell off? im sure that would cause a code. you've got fuel, air, but rpm's don't rise at all?
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Re: Cause of Carnage III

Unread postby YaBoyHalle » Mon Nov 24, 2014 7:58 pm

don't these have some funky manifold adjuster? it could have been stuck.
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Re: Cause of Carnage III

Unread postby red5.0fogger » Mon Nov 24, 2014 8:00 pm

Bad drivers seat switch. The car thinks a kid is in the seat so it won't go!
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Re: Cause of Carnage III

Unread postby decipha » Mon Nov 24, 2014 8:02 pm

no blowah, the belt is intact no issues there

rpm is solid, stays at 600 like a rock and doesnt budge

the intake runner control would still allow the engine to run fine just a little low on top end powah, no issues there
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Joined: Mon Jul 15, 2013 5:29 pm
Location: New Orleans, LA
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90 (4x 5spds) - Dante, Ruby, Daja, Ava
91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
95 auto Aisha
Vehicle 2 Information: Others:
00 Lincoln LS - Luanda
98 Camaro SS - Bounquisha
02 Harley F-150 - Sasasha
03 Marauder - DyShyKy
00 Explorer 5L - Bernyce

Re: Cause of Carnage III

Unread postby decipha » Mon Nov 24, 2014 8:03 pm

no lol, the seat occupied switch is fine
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decipha
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Posts: 15679
Joined: Mon Jul 15, 2013 5:29 pm
Location: New Orleans, LA
Name: Michael Ponthieux
Vehicle Information: Supercoupin' x10
90 (4x 5spds) - Dante, Ruby, Daja, Ava
91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
95 auto Aisha
Vehicle 2 Information: Others:
00 Lincoln LS - Luanda
98 Camaro SS - Bounquisha
02 Harley F-150 - Sasasha
03 Marauder - DyShyKy
00 Explorer 5L - Bernyce

Re: Cause of Carnage III

Unread postby YaBoyHalle » Mon Nov 24, 2014 8:08 pm

a hacker connected to the Bluetooth? lol, i think i've been stumped on this one. cam sensor?
YaBoyHalle
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Posts: 309
Joined: Fri Dec 13, 2013 11:22 pm
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Vehicle Information: 1993 2.3 LX
~97 hp
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~0 hp
it'll run in a weekend or two..

Re: Cause of Carnage III

Unread postby decipha » Mon Nov 24, 2014 8:12 pm

nope lol

the problem was the throttle pedal it went bad, after setting consecutive hard faults the ecu wont clear the code even when a new fully functional throttle pedal is installed

all i did was clear the code and all was fine!!
User avatar
decipha
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Posts: 15679
Joined: Mon Jul 15, 2013 5:29 pm
Location: New Orleans, LA
Name: Michael Ponthieux
Vehicle Information: Supercoupin' x10
90 (4x 5spds) - Dante, Ruby, Daja, Ava
91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
95 auto Aisha
Vehicle 2 Information: Others:
00 Lincoln LS - Luanda
98 Camaro SS - Bounquisha
02 Harley F-150 - Sasasha
03 Marauder - DyShyKy
00 Explorer 5L - Bernyce

Re: Cause of Carnage III

Unread postby YaBoyHalle » Mon Nov 24, 2014 8:16 pm

wow! i thought the guy who replaced it would have at least disconnected the battery. damn beamer.
YaBoyHalle
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Posts: 309
Joined: Fri Dec 13, 2013 11:22 pm
Name: halle
Vehicle Information: 1993 2.3 LX
~97 hp
Vehicle 2 Information: 1987 Bronco 5.0
~0 hp
it'll run in a weekend or two..


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