Engine has good throttle response, but low RPMs

LIGHTEMUP93

MEMBER
1995 CHEVROLET CAMARO
5.7L
V8
2WD
AUTOMATIC
150,000 MILES

Recently bought the car listed above (z28) has the lt1 in it, seems to have no power when taking off. Higher RPMs has good throttle response, but low RPMs just seems like it has lost his manhood. Will not burn the tires loose unless power braked, occasionally sounds like a " misfire or some sort of popping" as well. It has an after market "Borla exhaust, has a high performance jegs chip". Also has brand new radiator, spark plugs, plug wires, thermostat, power steering pump. Check engine goes on off, when it is on I can't get an OB2 reader to link up. Any advice?

Sunday, February 28th, 2021 AT 11:28 PM

3 Replies

ASEMASTER6371

MECHANIC
52,796 POSTS

Good morning,

I would check the basics first. Check the fuel pressure to be sure you have sufficient fuel available.

https://www.2carpros.com/articles/engine-has-low-power-output

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Is the transmission starting out in low gear? that would cause no power.

https://www.2carpros.com/articles/automatic-transmission-problems

I would also do a compression test. Look for 140-160 pounds.

https://www.2carpros.com/articles/how-to-test-engine-compression

Roy

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Monday, March 1st, 2021 AT 2:36 AM

DALE CRAWFORD

MEMBER
0 POST

If your Camaro is a 95, the reason you cannot get your OBD2 to link up is because even though you, (well, we, (I love my 95 Camaro)lol) have a OBD2 type connector, the system is actually OBD1. Some call it OBD1.5, but ultimately it is known as an "ALDL" port to which GM transitioned to the OBD2 Standard in a confusing way. Using OBD2 Connectors on the remaining OBD1 cars before being fully OBD2 compliant on 1996 vehicles and above. Here is a link to where I purchased my cable to connect to the PCM and PC.

OBD1 16-pin OBD2-'style'-connector: http://aldlcable.com/products/aldlobd2u.asp
The main site explains it ALL: http://aldlcable.com/

I recommend getting as familiar as you can so as to make sure to purchase the correct cable, (the one I linked to is the one that I bought for my 1995 Camaro that has an OBD2-style-connector but is in fact a OBD1 system. You can confirm this usually by the sticker under the hood, atop the radiator in front of the engine bay. I should say OBD1 compliant. After you receive the cable, (or while your waiting for it to arrive) research the various programs that will be used to read codes, etc. The ALDL site has all that info as well. If you have any other questions about that, feel free to ask. Hope this helped!

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