How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask BMW Pro. Your Own Question
BMW Pro.
BMW Pro., BMW Technician
Category: BMW
Satisfied Customers: 779
Experience:  9 years main dealer experience.
9824428
Type Your BMW Question Here...
BMW Pro. is online now
A new question is answered every 9 seconds

94 bmw 325i wont start. replaced fuel relay and

Resolved Question:

94 bmw 325i won''t start. replaced fuel relay and main relay, still won''t start. put external 12 volts to fuel pump, it works, it just won''t start. can you help?
Submitted: 8 years ago.
Category: BMW
Expert:  BMW Pro. replied 8 years ago.

Hi

does the engine crank? Do you have access to a fault code reader?

Rich.

Customer: replied 8 years ago.
Reply to Richg40's Post: the engine turns over fine, it just won`t start. ( diaognostics I), no i don`t have access to a reader
Expert:  BMW Pro. replied 8 years ago.

Without a fault code reader you're really going to struggle to find the cause.

You're going to have to go back to basics.....

Check fuel pressure at injector rail.

Check spark plugs.

Check compression on each cylinder.

Check throttle valve operation.

Check timing.

etc.

The reason I say this might be difficult to diagnose without a code reader is that any of the sensors may have failed, even though individually they are unlikely to prevent starting but a combination might.

Rich.

BMW Pro., BMW Technician
Category: BMW
Satisfied Customers: 779
Experience: 9 years main dealer experience.
BMW Pro. and 3 other BMW Specialists are ready to help you
Expert:  RButcher replied 8 years ago.
Have you tried putting the throttle to the floor while starting?
Customer: replied 8 years ago.
Reply to RButcher's Post: long beach bmw determined the the ecm is bad, the car is still there so i don`t have the numbers on the ecm to try to find a used one.
Customer: replied 8 years ago.
the dealer said the ecm is bad. in the process of having the car towed back, get the numbers on the ecm so i can find a used one. thanks for your interest