Those Evil Uro Red Relays

[OsoMoore]

I woke the Porsche up yesterday, and after hours of brake-work my wife was eager to take a drive. We loaded up and hit the road.

About 45 minutes into the drive, the engine cut out and we coasted to a stop. My wife was, understandably, quite unhappy.

Fortunately I know the quick things to check, and I swapped one of my black relays for the red fuel pump relay. Fixed! In order to avoid slowly destroying the black relay, I dug into my smuggler's box and pulled out my backup red relay. It didn't work.

So now I have two red Uro fuel pump relays which don't work reliably, and I have no fog lights because I stole their relay. This isn't the first time the red relay has died on us. My wife has decreed that I shall get a reliable relay "at any cost" - something about not wanting to call AAA this year.

Which relay should I get?

[KNS]

I understand URO quality hasn't been the best yet even Porsche cuts some corners - several years ago I picked up a new red relay from the dealer and it was made in China.

[john walker's workshop]

Still made in china.

[Joe Bob]

URO products suck, that is all.

I had a spare URO demo relay. When I realized what it was I gave it the float test. Didn't even bother with it.

[porschenut]

Originally Posted by OsoMoore

Which relay should I get?

A black one, apparently.

Yep, Uro relays are horrible.

[86 911 Targa]

When I replaced the brake pads on our "86, some of the replacement
pads were made in Mexico, and others in china.

Just a thought...............

Best,

Gerry

[OsoMoore]

Originally Posted by porschenut

A black one, apparently.

Yep, Uro relays are horrible.

Unfortunately, the black ones dont have a bias diode, so they don't protect the car's electrical system properly from voltage spikes that can occur from the fuel pump spinning after power is removed. So I do need a red one.

But it seems people are only aware of bad relays - not good ones.

[sugarwood]

Just get the Ritten/POrsche relay from Pelican for $31.

[wwest]

Originally Posted by OsoMoore

Unfortunately, the black ones dont have a bias diode, so they don't protect the car's electrical system properly from voltage spikes that can occur from the fuel pump spinning after power is removed. So I do need a red one.

But it seems people are only aware of bad relays - not good ones.

"Bias diode.."..?

Voltage Damping diode....

There are solid state devices/circuits connected to the armature coil of the fuel pump relay. Unless somehow "damped", short circuited, the inductive voltage spike that results when de-powering the relay will often damage those 1980's era devices.

One should NEVER use anything but a "red" relay for the fuel pump.

[Reiver]

I find the original Bosch ones on occasion and have a collection of good used ones....best bet.