Engine Rebuild and New Wiring Harness -- Transmission Problem!

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Jamie - 08 May 2006 15:02 GMT

Hey all,
I got the engine on my 1987 740 GLE put back in and runs fine. Now here
is the mechanic report.

What concerns me is the dashboard lighting up and the transmission not
shifting well. The transmission seemed fine before the engine was
pulled and the wiring harness replaced. Any chance of a wiring glitch?

Here's the mechanic report:"

I started the engine and took it down the road. The engine
runs fine. However, with the transmission in drive it slips so badly I
can't get the car up to speed. If I run through the gears manually it
seems to do better. I think the trannie is going south. There are also
electrical problems that I can't figure out. After going down the road
about half a mile, every warning light on the dash came on except for
the low oil pressure light. I got it back home and parked it in front
of
the shop."

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Gary Heston - 09 May 2006 01:24 GMT

[ ... ]

>I started the engine and took it down the road. The engine
>runs fine. However, with the transmission in drive it slips so badly I
[quoted text clipped - 5 lines]
>of
>the shop."

Check the fluid in the transmission; it'll slip if there's not enough,
and some may have been lost during the work, particularly if the car
has a cooler for the fluid.

For the all-dash-lights-on, check the alternator connections. I've
seen that happen in other cars when an alternator failed or a connection
failed. Also check the ground cable connections; your car might have had
a strap between the engine and body which was not reattached.

Gary

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Gary Heston gheston@hiwaay.net What do you call two SUVs colliding?
Poetic justice.
A worthwhile endeavour:
http://www.thebreastcancersite.com/cgi-bin/WebObjects/CTDSites

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Jamie - 09 May 2006 02:12 GMT

Thanks gary,
We did have some static ground straps off and exposed wiring. I think
we found them all and it still does it. We think there is a short
somewhere because were are having ignition problems.

I asked this in another post, but the new wiring harness I got from
Dave Barton (used/new),
is missing a connector. At the starting point of the harness at the
passenger firewall are 2 large block connectors and 1 small 2-prong
connector with 1 blue and 1 brown wire. The other end of these 2 wires
go somewhere near the starter, where from the harness come a red wire
and green wire to the starter, with this was a blue and a brown wire
going to a connector. This blue and brown wire connector is not on the
new harness, and I don't know where near the starter it connects, if I
would make one.

Can someone please check this out and let me know?

1987 740 GLE B230F

Thanks!

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Gary Heston - 09 May 2006 03:43 GMT

>Thanks gary,
>We did have some static ground straps off and exposed wiring. I think
>we found them all and it still does it. We think there is a short
>somewhere because were are having ignition problems.

Check the timing; if your engine has a timing belt, verify that all
the marks on the belt line up with the marks on the pulleys. Timing
problems can affect starting.

>I asked this in another post, but the new wiring harness I got from
>Dave Barton (used/new),
[quoted text clipped - 6 lines]
>new harness, and I don't know where near the starter it connects, if I
>would make one.

[ ... ]

Measure the length it extends from the harness near the starter and use
that as your search radius around the new harness. If the old wiring is
still good, just strip it out of the old harness intact and install it.

Gary

Signature

Gary Heston gheston@hiwaay.net What do you call two SUVs colliding?
Poetic justice.
A worthwhile endeavour:
http://www.thebreastcancersite.com/cgi-bin/WebObjects/CTDSites

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