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1995 Chevy Blazer 4.3L 4WD Have replaced fuel pump, fuel…

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1995 Chevy Blazer 4.3L...

1995 Chevy Blazer 4.3L 4WD Have replaced fuel pump, fuel pressure regulator, distributor cap and rotor, plugs and wires, and most recently the oxygen sensor (upstream). Fuel pressure is good at schraeder valve (60+psi), spider unit was not leaky when I changed the fuel pressure regulator. Vehicle starts and idles good, but engine often cuts out, sputters, and loses power when trying to accelerate.

Mechanic's Assistant: Is the power loss consistent, or does it fluctuate?

More present than not

Mechanic's Assistant: Are you fixing your Blazer yourself? What have you tried so far?

I listed them in the first text

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

I guess not

Submitted: 8 months ago.Category: Chevy
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Answered in 1 minute by:
11/20/2017
Chevy Mechanic: rpmdiag, Tech and Instructor replied 8 months ago
rpmdiag
rpmdiag, Tech and Instructor
Category: Chevy
Satisfied Customers: 8,968
Experience: Since 1975
Verified

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

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Chevy Mechanic: rpmdiag, Tech and Instructor replied 8 months ago

Okay, so if you're not losing spark or fuel pressure, you need to test the TPS with a scope for glitches that will cause that same symptom.

See attachment.

Please understand that I don't know your skill level or tools
you have to assist us. Also understand that I can't see, smell,
hear, or touch the vehicle either, so your patience is
appreciated. JA is a great Q/A site, but it does not replace a
repair shop. So please don’t shoot the messenger if I have to
deliver bad news:)
If you are satisfied with my answer, I would greatly
appreciate a 5 star rating now before you leave the site and I
will still assist you after you have rated me too if another
question pops up. I don’t get credit for helping you until
you rate me

Thanks, Ron

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Chevy Mechanic: rpmdiag, Tech and Instructor replied 8 months ago

Did you have any more questions for me at this time?

Thanks again, Ron

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Chevy Mechanic: rpmdiag, Tech and Instructor replied 7 months ago

Thanks again and please remember to rate me 5 stars now
and keep this link in case you need me again later on.
I don’t get credit for assisting you until you rate me
My goal is to assist you in the repair of your vehicle by
supplying you with well educated information. I may not
always have the exact fix you wanted to hear, but my job is
to get you on the right track, which I always do. I can’t hear,
see, smell or touch your vehicle from where I’m at, so your
understanding of that is greatly appreciated. There are no
magical answers, but I do my best to guide you in the right
direction.

Ron

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