My [engine](/topics-engine-chevy/) bogs down at full thro...

My [engine](/topics-engine-chevy/) bogs down at full throttle Mechanic's Assistant: How many miles are on the car? Is it an automatic or a manual transmission? 160,000 automatic transmission Mechanic's Assistant: ...

My [engine](/topics-engine-chevy/) bogs down at full throttle Mechanic's Assistant: How many miles are on the car? Is it an automatic or a manual transmission? 160,000 automatic transmission Mechanic's Assistant: What is the make/model/year of your transmissions? 1995 Chevy Silverado 5.7 liter 4l60e transmission Mechanic's Assistant: Are you fixing your vehicle yourself? What have you tried so far? I’ve replaced fuel injectors, fuel pump, fuel pressure regulator, distributor, almost every thing Mechanic's Assistant: Anything else you want the Mechanic to know before I connect you? I also replaced [catalytic converter](/topics-catalytic-converter-chevy/) and oxygen sensor, [muffler](/topics-muffler-chevy/), fuel filter, air filter, cleaned the throttle body, replaced [spark plugs](/topics-spark-plug-chevy/), spark plug wires, [ignition coil](/topics-ignition-coil-chevy/), throttle position sensor, almost every thing, ecm also.

Automotive Expert
Hello and thank you for using Just Answer! I am sorry to hear you are having car issues. My name is \*\*\*\*\* \*\*\*\*\* I am here to help answer your questions. can you check fuel pressure at WOT?

How do I check it, and I forgot to mention it bogs down at around second gear at lower rpm range
Automotive Expert
a fuel pressure gauge with a long hose set it on windshield were u can see it driving

Ok so I need to buy a fuel pressure gauge
Automotive Expert
yes beg borrow steal if need be! lol i suspect low volume under load

Ok and where would it have to be hooked up to
Automotive Expert
95 is it vortec or tbi? could be either thats like change over year


Ok so if there isn't enough fuel pressure at WOT what would it be.
Automotive Expert
around 30psi.. if its tbi the regulator between injectors go bad pretty often

Ok my regulator is only a couple months old could it still go bad
Automotive Expert
yea ive seen parts straight out box be bad. a would still check fuel pressure at WOT

Ok I just need to get a fuel pressure gauge to test and does it has to be at 30 psi at full throttle
Automotive Expert
you want to see 10 to 15 all the time. sorry 30 is on the 7.4L

Alright, I have a question do you think it could be the fuel pump
Automotive Expert
thats what i am thinking. could be restricted flow could be voltage drop. takes some testing to be sure.

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