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 rpmdiag Your Own Question
rpmdiag, Tech and Instructor
Category: Porsche
Satisfied Customers: 6701
Experience:  Since 1975
Type Your Porsche Question Here...
rpmdiag is online now
A new question is answered every 9 seconds

911 hard starting, yes, 1999, not fixing myself, no

Customer Question

911 hard starting
JA: Will the headlights turn on? Is the battery fully charged?
Customer: yes
JA: What year is your 911?
Customer: 1999
JA: Are you fixing your 911 yourself? What have you tried so far?
Customer: not fixing myself
JA: Anything else you want the mechanic to know before I connect you?
Customer: no
Submitted: 1 month ago.
Category: Porsche
Expert:  rpmdiag replied 1 month ago.

Hi, I'm Ron and I will be helping you today.
Stand by for a moment while I prepare your answer.

Expert:  rpmdiag replied 1 month ago.

Here’s the sequence of events I follow:

Check fluid level and color.Make appropriate repairs.

Check shift solenoids with a scan tool in bidirectional mode if applicable. Shift solenoids are inside the transmission and this is the easiest way to check them.

Drop pan and inspect for excessive metal shavings inside pan.

Check valve body and clutches visually.

Hopefully you may not have to go this far, maybe you just were a bit low on fluid.

Customer: replied 1 month ago.
Expert:  rpmdiag replied 1 month ago.

The wrong answer was attached to your question, sorry about that, plus the payment didn't go through for the phone call.

Is the problem you're having with it NOT cranking, or does it crank okay but not start?

If it's cranking good, then check for spark at the plugs with a spark tester.

If that's okay, then check the fuel pressure with a gauge.

If the engine is NOT cranking, then check the battery for a full charge and that it passes a load test, then check the cables and ends for tightness and corrosion.

Thanks, ***** ***** for the error at first.


Expert:  rpmdiag replied 1 month ago.

Hi, I'm just following up with you to see if you have any more questions.
Thanks, Ron