Question about 1987 BMW 3 Series

1 Answer

1987 BMW 325is Dies during normal operation

Have checked Fuel pressure it is not to factory spec but does not change during this condition.
Call may run fine for days then will lose power. the temp guage reacts to turning anything elec on in the car Like an amp guage should buy turning the Ignition key off and back on the car will resume operation somtimes for 100 miles sometimes less than a mile.
There seems to be no corilation to anything Hot. Cold 1/2 tank full Tank,night or day ??????
Replaced Fuel pres regulator
Replaced Temp sending Unit.

Posted by on

  • mike2johns2 Apr 21, 2009

    I have a 1998 318ti and it just looses power at different times whilst driving along.

    I am forced to pull over as all power is lost. Car will not start up after this has happened. It will start usually after half to three quarter hours later.



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • BMW Master
  • 14,036 Answers

Sound like fuel pump too weak.

Posted on Apr 11, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

7.3L ford diesel that starts and dies after sitting 2 hours

check your fuel pressure to make sure it is coming up to spec. if not, then replace the fuel pressure regulator. there are some sensors that come into play during the starting cycle and warm-up cycle that do not get read by the computer at operating temperature. you will have to see which ones in your vehicle monitor during the ignition phase to see if any of these are failing.

Nov 06, 2013 | Cars & Trucks

1 Answer


P1250- PRC Solenoid Circuit Malfunction, could be a problem with you fuel pressure regulator, i would check the pressure of the fuel rail with a fuel pressure gauge depending on what BMW you own fuel pressure spec it different.E39s are supposed to have 50 +/-2 psi of operating pressure

Jan 19, 2012 | BMW 323 Cars & Trucks

1 Answer

Injector not working why put new injector new computer new fuel pump does it have injector relay 1987 celebrity

Check fuel pressure. Have you replaced the fuel filter on schedule? Verify that the fuel pump is getting power. Power goes through an in-line fuse, then the fuel pump relay or the oil pressure sensor. (The relay bypasses the oil pressure sensor while the engine starts, but fuel pump power goes through the sensor during normal run operation. If you lose oil pressure, the fuel pump is shut off to protect the engine.) On four-cylinder models, the fuse is in the fuse block (E PUMP 10)
The fuel injectors are connected to the ECM fuse on one side and straight to the engine computer on the other side. Check the connectors and wiring, especially at the injector.

Aug 26, 2011 | 1987 Chevrolet Celebrity

1 Answer

My car is running down my street and on the return it sputs and spurts I have replaced the filter, drained the fuel ( petro ), cleaned the sock on the in-tank, last thing I can think of. it is a restore...

Did you done some timing on your ignition?
Sounds like the ignition got problem in firing order and timing sequence.
Check on that first, then we'll be glad to answer more problem to help you in that already classic model!
Thanks for using Fixya!

Dec 09, 2010 | 1987 BMW 3 Series

1 Answer

I have an 87 Porsche 930. The engine idles and runs fine under normal driving conditions but dies above 4000 rpm under rapid acceleration. Back off and it returns to running normally. The ignition coil,...

hello Murray
try to check your second fuel pump condition-delivery,but start with checking your fuel pumps relays
it the front trunk.The relasy should be RED not BLACK typeTo change the fuel filter is a good idea,on the filter is a date of manufactured,filter should be replaced one a year.

Nov 07, 2010 | 1987 Porsche 911

2 Answers

Ive got a 1997 cavalier it will start but quickly dies out ive got fire to my plugs and fuel to the injectures ive just replaced the ignition switch is there somkind of a security

You need a new fuel pump relay. The engine fires up and runs off the oil pressure switch untill the oil pressure PSI is reached at normal operating conditions. When the oil pressure reaches its operating PSI the PCM or engines computer will shut off that circuit and turns on the fuel pump relay to run the fuel pump untill you shut the engine off

Apr 19, 2010 | 1997 Chevrolet Cavalier

1 Answer

My 325is evo2 looses power when i accelerate it feels like i am stepping on the brakes. i have changed the fuel filter & fuel pump it still does the same thing

Hi Randall138,

If you noticed the problem started out small, then progressivley got worse, then the likely culprit is a Vaccuum Leak.

If problem suddenly ocurred, then this would likely be a faulty Throttle Position Sensor (TPS - this sensor responds to your gas pedal position).

Both problems above will give incorrect data to your EFI computer, causing erratic air/fuel mixture.

My best advice is to have your vehicle Diagnostics checked for Trouble Codes - this will immediately identify if the TPS is at fault.


"If this has helped you in any way, please rate this solution" :-)

Jan 27, 2010 | 1987 BMW 7 Series

1 Answer

Fuel pressure low at pressure monitor

HI. There are some areas that will need to be checked for faults, in this case. Check the following:

1. Fuel filter- If this device is clogged, or faulty, it will decrease the flow of fuel to the injector assembly. If the filter hasn't been changed recently, this will be a good place to start.

2. Fuel pump- This device may be weak, or grounded poorly. check the ground, and all wires the link the pump to the power source. replace any corroded contacts and connectors. wires,as well, if needed.

3. Fuel pressure regulator- The fuel pressure regulator is used to keep the fuel pressure in the fuel rail consistent and change the fuel pressure depending on the throttle position. The fuel rail is in a fuel loop between the fuel pump feed and return lines. Because the fuel delivery requirements change depending on the engine's throttle position and engine loads, the fuel injection system must be able to adapt to meet the fuel requirements of the engine's operating conditions during idle, acceleration and steady cruising.The fuel pressure regulator has a small vacuum line attached to it that allows the pressure regulator to change the fuel pressure in the fuel loop depending upon the intake manifold pressure which changes as the throttle position changes. When the throttle is opened, the manifold vacuum pressure drops off, causing the pressure regulator to increase the fuel pressure in the fuel loop, which increases the amount of fuel delivery at the injectors to provide for the additional fuel needed for the engine to operate properly.At idle, the manifold vacuum increases and the demands for the rate of fuel delivery are decreased so the pressure regulator decreases the fuel pressure in the fuel loop.

1. Look for visible evidence of fuel leaks.
2. A pressure regulator can become defective due to foreign material or a ruined diaphragm.

The result will be hard starting, poor idle quality, and lack or power. Burned spark plugs can result from operating with a lean air/fuel mixture, as well. replace this device if faults exist.

Nov 18, 2009 | 2001 BMW 330

1 Answer

Bmw 1988 325is engine stops running sometimes - not lack of fuel or battery, new fuel pump. Sometimes wont start, starter motor working well, good battery. Replaced fuel pump - same deal.

The number one problem with these cars is with clogged fuel filters. They must be changed regularly. When you say it won't start, do you mean it cranks but won't fire? That could be a fuel pressure problem due to a clogged filter.

Aug 17, 2009 | 1988 BMW 3 Series

1 Answer

1995 BMW 540I starts well cold, then dies out after getting to normal operating temperature. Usually will not restart until cools for a long time..cranks but won't start....Jack

I would check the fuel pressure just after starting and again after 10-15 minutes (or before it dies). Sounds like a fuel delivery problem. Could be a stuffed up filter, or the fuel pump could be dying. I had a Volkswagen some years ago and it had two fuel pumps, a large one up in the engine bay and a small "helper" in the gas tank. The one in the gas tank was bad but the bigone was fine, so I'd start the car normally, drive for about 20 minutes, then the car would die and not want to start again until it had cooled off. Maybe you have the same setup.

Jun 11, 2009 | 1999 BMW 328 Series

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

167 people viewed this question

Ask a Question

Usually answered in minutes!

Top BMW Experts

Anthony Jones
Anthony Jones

Level 2 Expert

128 Answers


Level 2 Expert

254 Answers


Level 2 Expert

281 Answers

Are you a BMW Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides