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rpmdiag, Tech and Instructor
Category: BMW
Satisfied Customers: 7070
Experience:  Since 1975
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I have a1998 740i when I give it a hard romp on the gas the

Customer Question

I have a1998 740i when I give it a hard romp on the gas the right side of engine loses power the when disconnect the battery for a minute everything's ok as long as I don't get into the throttle hard again
Submitted: 6 months ago.
Category: BMW
Customer: replied 6 months ago.
Also I put new plugs and coil in her runs good as long as I'm not into it hard
Expert:  rpmdiag replied 6 months ago.

Hi, welcome to Just Answer. I’m Ron and I’ll be helping you
Before we get started though, Please understand that I don't know
your skill level or tools you have to assist us. Also understand that
I can't see, smell, hear, or touch the vehicle either, so patience is
appreciated. JA is a great Q/A site, but it does NOT replace a
repair shop.
My goal is to make you happy and get a great rating in return for
my time. Sometimes I have to give you bad news that I know you
didn’t want to hear, so please don’t shoot the messenger.

I would attach a scan tool and view what the TP sensor is doing when this happens. I would also look at the MAF sensor as well to be sure these components are not out of calibration.

Thanks, ***** ***** sorry for the wait.