sluggish - Team Camaro Tech
Troubleshooting Diagnosing problems done here.

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post #1 of 7 (permalink) Old Jul 22nd, 03, 06:27 PM Thread Starter
Join Date: Jul 2003
Location: S.A.
Posts: 17

my car is sluggish when i push on the gas pedal. when i push the gas nothing happens at first the rpm gage does not up at first either. what can be the problem... is it the spark plugs should i get new ones. please someone let me know asap.

1991 z28<br />305Tpi<br />work in progress
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post #2 of 7 (permalink) Old Jul 23rd, 03, 07:44 AM
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Join Date: Apr 2003
Location: Allen, TX
Posts: 2,108

Well few things to check

Air Filter clean?
Fuel Filter replaced?
Fuel Injectors cleaned? (not with the bottle in the gas tank but a real cleaning)
Try a full tank of super unleaded yet from Chevron to see if it makes a difference?

1969 Camaro - GM 2003 Electron Blue
Beck Racing 383 cu in 465HP Engine - Sean Murphy Inductions Stage 2 Quadrajet
TCI Streetfighter 350 - 3.73:1 Posi 10 Bolt Rear - 12.6 sec qtr mile

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post #3 of 7 (permalink) Old Jul 24th, 03, 05:22 AM
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Location: Socorro, New Mexico, USA
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Throttle position sensor (TPS) gone bad?? Just a thought
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post #4 of 7 (permalink) Old Jul 24th, 03, 09:58 AM
Join Date: Jun 2003
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might be the knock sensor is keeping the distributor retarded..tap the block with a wrench and see if the motor responds if not it could be it..its worth a try....knock sensors dont like dog bone timing componets if you have one..hope this helps ya [img]graemlins/beers.gif[/img]

[ 07-24-2003, 01:58 PM: Message edited by: gunny ]
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post #5 of 7 (permalink) Old Jul 24th, 03, 12:34 PM
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Join Date: Mar 2002
Location: Austin, TX, USA
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Very good suggestions so far. Also, if the car is a MAF system, a vacuum leak will make them run like crud. Check the ducting between the MAF and throttle body. For that matter, a MAP system will also act weird if a vacuum leak exists. A bad MAP sensor can also cause problems. If your system is MAP based, look for a diagnostic procedure in just about any service manual (haynes for example). Whatever you do, don't just throw parts at it. The manuals will explain how to check the sensors. Shotgunning can get very expensive on a fuel injected car.


68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI
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post #6 of 7 (permalink) Old Aug 1st, 03, 07:43 PM
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Join Date: Feb 2002
Location: AK
Posts: 68

3rd gen F bodies cars don't have a MAF sensor from 90-92 they are speed density (MAP)...

like said above don't shot gun... start w/ the basics... fuel air spark... inspect the ignition components and check the fuel pressure... a good manual is your best friend on the EFI cars...

after all that start W/ the TPS... thats where I would start my diag w/ the symptoms you are describing...

68 camaro... your tipical hipo 350... stl crnk... h beam rods full floating pistons mild cam, auto trans (wanting 700r4)... gears 3.73's... smokes tires lots of fun... also 87 IROC 305TPI 5-speed
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post #7 of 7 (permalink) Old Aug 2nd, 03, 02:09 AM
Join Date: Jun 2003
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the tps controls the injector pulse width
still sounds timing related
are both injector strings working?
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