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Old 05-17-2019, 02:01 PM   #1
DrunkUncas
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Replaced my fuel pump. Fires, won't run. Pumping fine.

FU to https://forum.e46fanatics.com/showth...1#post18544469


Pump primes, then squirts when cranking into a bucket.

Car fires once, then dies- exactly like it did before pump replacement.

Relay bench tested. No current codes, but my TPS has occasionally been giving me an EML when I punch it in a higher gear.

Ground on passenger side engine good.


Ideas?

Solved: Check your MAP

Last edited by DrunkUncas; 05-17-2019 at 08:48 PM.
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Old 05-17-2019, 02:09 PM   #2
Luke_palma
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Run live data of when car dies. What happens. Fuel trims short and long term. Any misfire knocking data.

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Old 05-17-2019, 02:10 PM   #3
Luke_palma
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Will car run if u give it gas after startup

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Old 05-17-2019, 02:25 PM   #4
DrunkUncas
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Won't run. Gives it a kick to a little over a grand and dies immediately.

Can I run live data on Torque Pro?
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Old 05-17-2019, 02:44 PM   #5
Luke_palma
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Not sure. Most scantools and software should let you. Biggest thing is to record what happens when you start up and what happens when it dies. That will make sure you're chasing the right problem (fuel) and its not something else.

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Old 05-17-2019, 02:49 PM   #6
Luke_palma
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Also try starting car with maf unplugged. Buddy had the issue where maf was so screwed the afr was completely off and car wouldn't run. Unplugging it makes it run off default values. Remember car needs air fuel and spark. One of these missing or wrong will cause a car to die

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Old 05-17-2019, 06:13 PM   #7
DrunkUncas
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Quote:
Originally Posted by Luke_palma View Post
Also try starting car with maf unplugged.

DING DING DING!!!!!

Thanks again, buddy.
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Old 05-17-2019, 07:14 PM   #8
Luke_palma
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Glad you got it figured out!! Sorry a pump was wasted but good pm nevertheless.

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Old 05-17-2019, 07:43 PM   #9
DrunkUncas
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Originally Posted by Luke_palma View Post
Glad you got it figured out!! Sorry a pump was wasted but good pm nevertheless.

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119k miles. Preventative maintenance, and an upgrade should I decide to blow it.
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