Anti-lock Light And Loss Of Power; How Related?

[drjrt]

1988 528e with ~170K miles. Engine has always run fine, starts everytime.

4 times in the last month while at cruising speed (~65mph), on highway,
no acceleration/load, variety of outside temperatures, I lose power.
It is as if it wants to stall. Usually drops to about 1K rpm despite the
accelerator to the floor. Anti-Lock light comes on. Within ~30sec I can
again accelerate and it seems to run normal accept: 1) Anti-Lock light
remains on, 2) seems a little less responsive on acceleration.

After I park for a few hours the Anti-Lock light will be off when I restart car.

I don't think it is a stuck rotar. I don't detect any drag on any of the wheels.

Other times, car runs fine --- except just the last week it has run rough
and stalled while idling a few times (never in the past) and I think I detect
a whine from the rear passenger side.

Questions:
1) How are the "Anti-Lock" electronics and acceleration related?
2) Does this sound like a supply problem? Pump going out?
3) Probably not a filter problems since periodic?

Thanks for any suggestions.

[billB]

1) How are the "Anti-Lock" electronics and acceleration related?

Do you have ASC light (yellowish/amber triangel) or button in console? If so they are VERY related since its job is to cut on the throttle ONLY when you loose traction.

[Hoppy's535i]

bad ABS sensor is my bet.

[drjrt]

Originally posted by billB@Feb 24 2005, 05:25 PM
1) How are the "Anti-Lock" electronics and acceleration related?

Do you have ASC light (yellowish/amber triangel) or button in console? If so they are VERY related since its job is to cut on the throttle ONLY when you loose traction.

[snapback]298561[/snapback]

Please excuse my ignorance but what/where is "ASC light"? The Anti-Lock
indicator is a yellow square with the word "ANTI-LOCK" (but I don't think
this is what you mean).

[CiscoKid]

his car is an 88, so i believe that it does not have ASC

[billB]

Originally posted by drjrt+Feb 24 2005, 10:01 PM--><div class='quotetop'>QUOTE(drjrt @ Feb 24 2005, 10:01 PM)</div><div class='quotemain'><!--QuoteBegin-billB@Feb 24 2005, 05:25 PM
1) How are the "Anti-Lock" electronics and acceleration related?

Do you have ASC light (yellowish/amber triangel) or button in console? If so they are VERY related since its job is to cut on the throttle ONLY when you loose traction.

[snapback]298561[/snapback]

Please excuse my ignorance but what/where is "ASC light"? The Anti-Lock
indicator is a yellow square with the word "ANTI-LOCK" (but I don't think
this is what you mean).

[snapback]298858[/snapback]

[/b][/quote]

Sorry wrong call did not notice the 88 part!!!

[Faith]

Originally posted by drjrt@Feb 22 2005, 11:17 PM
1988 528e with ~170K miles. Engine has always run fine, starts everytime.

4 times in the last month while at cruising speed (~65mph), on highway,
no acceleration/load, variety of outside temperatures, I lose power.
It is as if it wants to stall. Usually drops to about 1K rpm despite the
accelerator to the floor. Anti-Lock light comes on. Within ~30sec I can
again accelerate and it seems to run normal accept: 1) Anti-Lock light
remains on, 2) seems a little less responsive on acceleration.

After I park for a few hours the Anti-Lock light will be off when I restart car.

I don't think it is a stuck rotar. I don't detect any drag on any of the wheels.

Other times, car runs fine --- except just the last week it has run rough
and stalled while idling a few times (never in the past) and I think I detect
a whine from the rear passenger side.

Questions:
1) How are the "Anti-Lock" electronics and acceleration related?
2) Does this sound like a supply problem? Pump going out?
3) Probably not a filter problems since periodic?

Thanks for any suggestions.

[snapback]297526[/snapback]