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Changed fuel pump on 2006 97x still having trouble starting…

Customer Question
Changed fuel pump on...

Changed fuel pump on 2006 97x still having trouble starting it on cold mornings after it sits all night

Mechanic's Assistant: Have you ever replaced the fuel pump, or is this the original?

Brand new

Mechanic's Assistant: Are you fixing your 9-7X yourself? What have you tried so far?

That's it and new battery

Submitted: 6 months ago.Category: Saab
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Answered in 4 hours by:
12/23/2017
Saab Mechanic: David Craig, Auto Mechanic replied 6 months ago
David Craig
David Craig, Auto Mechanic
Category: Saab
Satisfied Customers: 5,755
Experience: Owner/Mechanic at 3D Automotive
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Hi my name is ***** ***** I'll be more than happy to assist you, Please allow me a few minutes to review your information. Thank you.

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Saab Mechanic: David Craig, Auto Mechanic replied 6 months ago

Have you performed a fuel pressure leak down test?

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Customer reply replied 6 months ago
could it be crank sensor
Saab Mechanic: David Craig, Auto Mechanic replied 6 months ago

if it eventually starts when its not cold, then no... what was the leak down rate?

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Customer reply replied 6 months ago
He doesn’t remember
Saab Mechanic: David Craig, Auto Mechanic replied 6 months ago

ok, if it has a hard time starting after sitting all night. you either have leaky injectors or sticky valves due to carbon deposits.

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Customer reply replied 6 months ago
Then this morning it blew pressure line off of fuel pump. Key was in on position and vehicle not running
Saab Mechanic: David Craig, Auto Mechanic replied 6 months ago

ok. whats the fuel pressure?

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Customer reply replied 6 months ago
I will check when I get back
Saab Mechanic: David Craig, Auto Mechanic replied 6 months ago

ok thanks

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Customer reply replied 6 months ago
60 psi
Customer reply replied 6 months ago
Leaks Down to 40 psi
Saab Mechanic: David Craig, Auto Mechanic replied 6 months ago

how fast does it leak down to 40?

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Saab Mechanic: David Craig, Auto Mechanic replied 6 months ago

60 is too high

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Customer reply replied 6 months ago
30 seconds
Saab Mechanic: David Craig, Auto Mechanic replied 6 months ago

its leaking down too fast also

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Customer reply replied 6 months ago
It fluctuates to around 50
Saab Mechanic: David Craig, Auto Mechanic replied 6 months ago

key on engine off, it fluctuates between 50 -60?

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Saab Mechanic: David Craig, Auto Mechanic replied 6 months ago

it needs to be a steady pressure. please standby

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Saab Mechanic: David Craig, Auto Mechanic replied 6 months ago

4.2 engine?

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Customer reply replied 6 months ago
4.2 correct
Saab Mechanic: David Craig, Auto Mechanic replied 6 months ago

ok, the bleed down is way to fast for 30 seconds. is that 60 psi with the engine running or ey on engine off?

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Customer reply replied 6 months ago
Running
Saab Mechanic: David Craig, Auto Mechanic replied 6 months ago

that's a bit to high. when you replaced the pump, did you just replace the pump or the entire fuel sender module with the pump already in it?

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Customer reply replied 6 months ago
Everything
Saab Mechanic: David Craig, Auto Mechanic replied 6 months ago

ok, do you thinks its possible the line blew off of the fuel pump because it wasn't snapped on all the way?

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Customer reply replied 6 months ago
Maybe. My concern is why it started and stalled first thing this morning
Saab Mechanic: David Craig, Auto Mechanic replied 6 months ago

if leaky injectors. or sticky valve, I already told you that.

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Saab Mechanic: David Craig, Auto Mechanic replied 6 months ago

add a bottle of marvels mystery oil in the gas tank

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Saab Mechanic: David Craig, Auto Mechanic replied 6 months ago

are you there?

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Customer reply replied 6 months ago
Yeh I’m here
Saab Mechanic: David Craig, Auto Mechanic replied 6 months ago

try my recommendation. or pull all the plugs and see which ones are wet

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Saab Mechanic: David Craig, Auto Mechanic replied 6 months ago

hows it going?

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Customer reply replied 6 months ago
The same
Saab Mechanic: David Craig, Auto Mechanic replied 6 months ago

did you pull any plugs?

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Customer reply replied 6 months ago
My friend has it down his garage he was doing that yesterday I didn’t hear from him today.
Saab Mechanic: David Craig, Auto Mechanic replied 6 months ago

ok, then when you do please let me know because if the fuel pressure is dropping that fast then that's going to be your issue

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Customer reply replied 6 months ago
Ok thanx
Saab Mechanic: David Craig, Auto Mechanic replied 6 months ago

I'll be on all day

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Customer reply replied 6 months ago
It was crank sensors
Customer reply replied 6 months ago
Sensor
Saab Mechanic: David Craig, Auto Mechanic replied 6 months ago

very good. glad you found it

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