Are Fuel Pressure Regulators no longer available?

[HiSPL]

In doing other stuff tonight I found fuel in the vacuum side of my FPR. Went online and IPD only has an aftermarket brand and FCP doesn't even have one.

'88 244 NA.

 

[HiSPL]

I just ordered one made by Standard Motor Products on Rockauto. We'll see how it do.

I'm surprised you can't find the Bosch ones anymore. These were used on a bunch of cars.....

 

[lookforjoe]

If its' the Bosch 2.5bar, I have a NOS . 3517063

 

[James M]

I just pocket PnP units


I'd take a used Bosch part over most aftermarket suppliers these days...

 

[84B23F]

'88 244 NA.

Might find one via these reference numbers: at your own risk

0280160225,
0280160292,
13006001101,
13053006101,
13531284796,
13531711540,
13531722039,
1357705,
3517063
758015,
==========
On ebay these days, there are scalpers....I have no idea what Porsche charges

94411019803 - New genuine Porsche Fuel Injection Pressure Regulator
US $354.52

Fuel Pressure Regulator - 1985-1986 Porsche 944 - SKP​

$35.02

 

[HiSPL]

If its' the Bosch 2.5bar, I have a NOS . 3517063

TBH I have no idea what the pressure is supposed to be. The one I ordered is 3 bar.

 

[James M]

It probably says on the side of the regular

 

[MasterBlaster]

TBH I have no idea what the pressure is supposed to be. The one I ordered is 3 bar.

Line pressure with the vacuum hose disconnected should be 42 psi.

 

[OttoB]

I just ordered one made by Standard Motor Products on Rockauto. We'll see how it do.

I'm surprised you can't find the Bosch ones anymore. These were used on a bunch of cars.....

I found Bosch unit but it was over $250. I bought that Rockauto unit. 5 years and works beautifully.

 

[84B23F]

The one I ordered is 3 bar.

LH 2.4 used the 3 bar,
LH 2.1 used the 2.5 bar, which is threaded on one side, and
from one ebay scan, and another scan, 1988 240 Volvo's FPR is 2.5 bar

 

[lookforjoe]

All this can be checked in the online parts catalog - as long as it's available - it's annoying that Volvo drops the PN's once something is NA, as it fucks with the historical record.

85-88 LH2.2 NA used the the 2.5bar regulator 3517063.
LH2.2 & 2.4 FT used 3bar 3517064
89-on LH2.4 used 3bar 3517064

Using the 3bar on the LH2.2 system should not make an appreciable difference to a otherwise well running system, IMO

 

[2manyturbos]

Line pressure with the vacuum hose disconnected should be 42 psi.

The pressure for the 3 bar equipped engines is 43 psi, for the 2.5 bar equipped engines, 36 psi. An 88 240 has the 2.5 bar regulator.

 

[HiSPL]

Cool. Thanks all.

I will be skimming the head and a cam in the future, so having a touch of extra fuel can't hurt.

 

[84B23F]

...so having a touch of extra fuel can't hurt.

Using a pinch bigger injector on LH 2.4...Cold starts are great, but I have to rev up engine until O2 engages...about one minute of higher revs...2,000 or so. Fuel mixture is on the Rich side....

YMMV with LH 2.2...depending upon AMM/O2's fitness.

 

[leecatd8209]

I got a Delphi replacement from FCP two-ish years ago and it failed on me last week. Swapped in the god knows how old OEM Bosch from the 760 and everything's fine again.

 

[HiSPL]

Put the new FPR in tonight. Did about a 10 mile drive and when I got home the car was running a bit rich. Turned the mixture screw a bit until it leaned out and it seems happy.

Not sure if its due to the extra pressure, or that this one is working properly and not leaking.

 

[84B23F]

new FPR

O2, MAF (AMM), and ECU's temp sensor must be fit. With LH 2.1, I used a high impedance automotive voltmeter to observe O2 sensor, which this meter can show average, now, and peak voltages.

ECU/ECMs I'm aware of have open and closed loop operations. On older vehicles, while in open loop, there may have been a rich mixture, but in closed loop the stoic mixture.

If a high impedance voltmeter is used to "see" O2 sensor voltage, I don't know what voltage would be observed, when in closed loop.

FWIW - It is STRONGLY advised that you replace your Oxygen Sensor before attempting AMM tuning

 

[HiSPL]

I don't know about all of that. It seems to me that I'm fine using the O2 sensor I already have. My AMM is NOS and fairly new. I now also have a new TPS too.

My lights go flashy flashy just fine after about a half turn of the screw to lean it out a bit. I could also tell by ear that the car was running a bit rich since I have a rowdy exhaust and I'm used to tuning motorcycle carbs by reading plugs and "feel". Once the mixture is good I will get some decel crackles happening and a little more rasp to the exhaust note. Running rich gives a mellower tone and little to no crackles.