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BMW 7-Series Maintenance and Repair

831 messages,  Last post on Feb 17, 2013 at 11:00 AM

You are in the BMW 7-Series Forum.

What is this discussion about? BMW 7 Series, Electrical, Engine, Sedan

Messages Page 47 of 84

#460 of 831 Re: 2002 745i with 27,000 needs new engine? [garguy] by bdr127

Apr 22, 2006 (11:21 am)

Replying to: garguy (Apr 22, 2006 11:03 am)
Well, you said you read all about the 02-03 7-series problems before buying.... Frankly, what did you expect?
 
BMW made so many changes in technology and software that had previously never had experience in real-world driving. BMW openly admitted their mistakes and even gave all 02 and 03 7's a full 6yr/100k warranty (which is a nice gesture, btw, IMO).
 
Since then, however, the 7's have been great. No across-the-board issues and nothing out of the ordinary. It took them a year or two, but BMW has really done a nice job with the 7. If you're able to buy that great $120k (new) 760Li from your brother-in-law at lease end, I'd jump all over it. It is extremely unlikely you'd run into anything even close to your 2002.

#461 of 831 Re: 1994 740i [Mr_Shiftright] by thenut8522

Apr 24, 2006 (6:25 pm)

Replying to: Mr_Shiftright (Apr 18, 2006 6:24 pm)
Yeah, I bought the car using poker winnings because it was a perfectly clean 1994 740i with only 95,000 miles and it was $5,000. So I jumped at the deal, thinking of selling it before I went off the college (and hoping that I would not have to make a major repair until then). It did not work out completely as planned....
 
I'm going to call the mechanic and repair the cost of: A- a new valve body or B-a totally new/rebuilt transmission, because if I can do the entire transmission for a similar price, it would help me to sell the car more easily/for more money when the time comes.

#462 of 831 transmision decision (A)utomatic / (M)anual by chingi

Apr 25, 2006 (10:33 am)

my 1998 740il refuses to stay in the automatic trans mode unless i am mantaining a speed of 40 mph or higher so i have been forced to drive in manual for the last 4 months. i think its in the switch it self becous as soon as i switch it back to auto it kicks in. If this is the begaining of future problems can some one give me a heads up? or a way to resolve this super shilft problem.

#463 of 831 Re: transmision decision (A)utomatic / (M)anual [chingi] by bdr127

Apr 25, 2006 (3:58 pm)

Replying to: chingi (Apr 25, 2006 10:33 am)
my 1998 740il refuses to stay in the automatic trans mode unless i am mantaining a speed of 40 mph or higher so i have been forced to drive in manual for the last 4 months. i think its in the switch it self becous as soon as i switch it back to auto it kicks in. If this is the begaining of future problems can some one give me a heads up? or a way to resolve this super shilft problem.
 
According to the E38 owners manual, "A" stands for Adaptive and "M" stands for manual with regards to that switch.
 
There are actually 3 driving modes, the third of which is "S" (Sport). When you are using "A" and put the gear in "4", it'll be in Sport mode... Basically it's just not using the 5th overdrive gear, so the rpms are revving up higher.
 
After reading your post, I can't determine if you are utilizing A/M correctly, so I'll quote their functions from an E38 owners manual:
 
"A - Adaptive Program: This is the initial position that transmission selects at every start. In the forward ranges, Adaptive Transmission Control automatically selects the most suitable control program from the available range........."
 
"M - Manual Program: This program is for driving in a single gear (4th or 5th with the selector lever in Drive). The transmission then remains in the selected gear both when underway and when starting off. For instance, when you make a steep ascent with the selector lever in Position 2, then transmission refrains from executing undesired upshifts. The same principle applies during operation on ice-covered roads: By placing the selector lever in Position 3 you can move off gradually, and the transmission wil also suppress subsequent shifts into higher gears."
 
So, to understand what you are saying, when you start the car you are putting it in "M" mode and "Drive" until it hits 40 mph? If that's the case, then you're probably trying to accelerate from a standstill in 4th or 5th gear... and that's not good for the engine. Could you please clarify?

#464 of 831 Electrical puzzle on 98 740il by suite7

Apr 29, 2006 (4:44 am)

Unfortunately, this isn't a riddle. What does the air back light, the cruise control and the dsp have in common? The air bag light sensor light is on with an error code related to power supply, the cruise control stopped working (in stages - now the light won't even activate when the system is turned on but not engaged), and the dsp led went dim and now doesn't turn on. Does any of this sound familiar?
Is the car safe to drive? I believe the air bags are inoperative while the light on the dash is lit.
Help...

#465 of 831 tranmision decision clarification by chingi

Apr 29, 2006 (2:14 pm)

i guss the problem i am having is with Adaptive program (thanks for the info(A)-Adaptive). no matter which program has been used last before cutting of the car,when it is started,it will go to manual program prior to placing it in gear(D)and the (M)lights up to the right of it. I normaly hold the button in the A(adaptive)position until i reach speeds of 40mph or more if not shortly after letting go of the button you feel the car automatically shift back into the manual mode. It will also shift to the manual mode at all most every complete stop right before excelleration.

#466 of 831 2000 740 il transmission problem? by finn4

May 01, 2006 (6:28 pm)

i have a 2000 740il...just replaced the transmission at 175000 miles...problem was, right at 30 mph or what seemed to be between 2nd and 3rd gear, it felt like i was driving on rumble strips, then when it got through that speed it stopped...doesnt do it whem in M mode, just A mode...rplaced the trans witha rebuild...still doing it...it has to be electical...right?

#467 of 831 1990 Bmw 750 Looses Power by caliboi1976

May 12, 2006 (7:42 am)

HI, im looking for some information as to what would be the likely cause for my 90 750il to intermittantly loose power, it does it at cruising speeds mostly, feels like it runs on only 6 cylinders, i let off the gas and then the other cylinders catch on and its fine for a few minutes and then same thing, cuts down to 6 cyl, let off and then back to 12.. its very annoying. I have a complete parts car, but rather than just swapping parts would like to have an idea. The parts car is an 88 750il, will only move in reverse, any ideas what is wrong with the transmission? It will creep forward but will not shift and slips bad. Thanks

#468 of 831 Re: 1990 Bmw 750 Looses Power [caliboi1976] by Mr_Shiftright HOST

May 12, 2006 (11:06 am)

Replying to: caliboi1976 (May 12, 2006 7:42 am)
sounds like a "cranky" crankshaft sensor to me. I believe there are two, one for each bank of cylinders, so this makes some sense. Another idea might have to do with throttle control "motor".

#469 of 831 Radio head removal by wratpack

May 15, 2006 (3:28 pm)

Replying to: Mr_Shiftright (May 12, 2006 11:06 am)
Can someone please help me with some step-by-step instructions as to how to remove the radio from the dash of a 1990 bmw 735il.
Or better still, point me in the right direction for solving my problem. It looks like the radio (and cd) are working fine but there is zero sound from the speakers. All fuses are OK, I have not yet checked the powewr into the booster amp (rear lhs of trunk)as I do not have the plug layout.

Messages Page 47 of 84

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