alabbasi

I spent today assessing my 1988 928 and giving it a thorough clean. I have some particular questions in red that I would appreciate answers. This is my first Porsche but not my first German car. I own several Mercedes Benz SL's, SLC's SEC's, and SEL's from the 60's, 70's, 80's and 90's which share some common parts.

I've had this car for several months but I have not had much time to work on it because I've been busy with other projects.

With a new fuel pump, I got the engine running but there is a god awful rumble that appears to be coming from the flywheel area. I suspect that the bearings in the torque tube are bad.

Is there a good source for these on an exchange bases?

The car idles OK but it clearly needs new plugs and new plug wires. None of the secondary gauges (oil pressure, temp fuel gauge and amps) are working. The power steering belt is disconnected.

Anyone now what fuse/relay controls these gauges

After cleaning the car, and not the engine bay, and pulling and replacing a plug wire or two to just see how they come out, the car would not start unless starting fluid was used. It would run once started but would not start by itself. I'm not sure what the deal is there. I heard that the fuel pumps could have check valve problems but in this case, the pump is a day old.

Any ideas?

I'll change the plugs and wires and at the same time, do a coolant flush as it would be a good time to replace the upper and lower radiator hoses at the same time.

Aside from these, there's a lot on this car that's just old an neglected, such as the power window switches that stick and need to be pressed about 15 times before they come to life. I suspect that i have to give it the same treatment that I give my old Jaguar where I take every electrical connector apart, clean it with sand paper and then coat them with dielectric grease before reconnecting.

At least I don't have to push it anymore. Happy days

blown 87

Keep using the starting fluid and you are going to destroy the engine.
Use propane if you have to.

Kiln_Red

You probably wet down the distributor caps while washing the engine, thus creating the hard start issue. I would definitely recommend isolating that engine noise. It could be that the crankshaft bolt is loose; saw this recently. Or it could be that the water pump impeller is migrating. Neither are likely, but I just wanted to illustrate how irregular sounds can be serious as if either issue were neglected it could result in catastrophic damage to the engine. You need a confident diagnosis of what the source of those sounds is. Congratulations on getting it running.

Speedtoys

Where in the world are we?

alabbasi

Austin

Thanks for responding. I deliberately resisted the urge to was the very dusty engine because I did not want to introduce water to a poorly running car.
I spoke to the PO who indicated when he was driving it, it had a rumbling noise from the torque tube bearings that became apparent after he run the through water. This was more then 7 years ago.

I cranked the car up while he was on the phone and he asked me whether that sound was the car falling off the lift. When I told him that it was just me starting it, he drove by and said that it was the same sound, only a lot louder. It's a metal to metal sound. I should have recorded it on my phone.

I may as well change the plug while I'm at it. What type of spark plugs are right for these cars? I'm a Mercedes guy and usually buy non resistor plugs from NGK.

What works for these cars?

Thanks


"We" are in Dallas,TX

With best regards

Al

Speedtoys

928intl.com

14pin plug above the jump post in engine bay..needs rebuilt.

It ran before you pulled wires?

Screw that: https://rennlist.com/forums/928-foru...eneration.html


Bet you need to do this, too: http://dwaynesgarage.norcal928.org/1...%20Refresh.htm

alabbasi

Thanks, once I replaced the pump, the car would start, until pulled the plug wires and put them back. I only pulled the front two on the drivers side to see how they come off, but they are in bad shape.

I'll take a read of your links.