General Maintenance & Repairs Leaks | Squeaks | Clunks | Rattles | Grinds
Sponsored by:
Sponsored by: CARiD

I need help....

Thread Tools
 
Search this Thread
 
Old Jun 18, 2008 | 01:31 PM
  #1  
95FORMULA141's Avatar
Thread Starter
Teching In
 
Joined: May 2008
Posts: 8
Likes: 0
From: Guntersville, Alabama
Default Please Help, Car Won't Revv

Alright guys, I've got a 95 Formula and for some odd reason it just stopped revving period. I've replaced the cap, rotor, plugs, wires, coil, and ignition control module.....and still nothing has seemed to help.....even put a new fuel filter on it just because for some odd reason that usually helps. But it didn't. Has a half tank of gas in it too, so thats not the problem. So if you guys can think of anything let me know please. Thanks!!

Oh yea, i was even extra careful not to get the new cap and rotor wet.....

Last edited by 95FORMULA141; Jun 19, 2008 at 11:50 AM.
Reply
Old Jun 18, 2008 | 01:59 PM
  #2  
Weezzer's Avatar
TECH Resident
 
Joined: Jan 2003
Posts: 937
Likes: 0
From: South Alabama
Default

Has it got fuel in it?
Reply
Old Jun 19, 2008 | 11:40 AM
  #3  
95FORMULA141's Avatar
Thread Starter
Teching In
 
Joined: May 2008
Posts: 8
Likes: 0
From: Guntersville, Alabama
Default

Got half a tank...
Reply
Old Jun 19, 2008 | 12:31 PM
  #4  
2001NBMZ28's Avatar
TECH Senior Member
 
Joined: Dec 2001
Posts: 5,399
Likes: 3
From: Jacksonville, FL
Default

Do you have access to an obdi scan tool for a '95 to read any codes?
Reply
Old Jun 19, 2008 | 01:11 PM
  #5  
9000th01ss's Avatar
Banned
iTrader: (10)
 
Joined: Feb 2008
Posts: 3,235
Likes: 2
Default

Check the fuel pressure.
Reply
Old Jun 19, 2008 | 01:15 PM
  #6  
squeals99's Avatar
TECH Enthusiast
iTrader: (8)
 
Joined: Aug 2006
Posts: 664
Likes: 0
From: Linton, IN
Default

sounds like the problem i had... went to replace the cap and rotor and i guess when i took the cap off and got the opti broke down to the optical sensor i guess i somehow ruined the sensor... so when i put the opti back on the car i could get it to start, but it ran at like 400 rpms or so and when i would hit the gas it wouldnt advance any... so ended up i needed a new opti... and i replaced the coil, cap and rotor, plugs and wires, and about anything i could think of... but i dont know how you can check if its a bad opti or not, but that ended up being my problem... slapped a new one on it and it was as good as new
Reply
Old Jun 19, 2008 | 02:42 PM
  #7  
95FORMULA141's Avatar
Thread Starter
Teching In
 
Joined: May 2008
Posts: 8
Likes: 0
From: Guntersville, Alabama
Default

I do have access to a obdI scanner but the thing is I've ran it and it never threw any codes.....no lights are on or anything...I havent checked the fuel pressure but it idles fine......I'll scan it again tonight and see what happens......I just replaced the MAP sensor, and the TPS sensor also......and still no luck. Thats the reason I changed the cap and rotor is because it wasn't revving before......and it still didnt help it. I don't have any other ideas of what it might be.

Last edited by 95FORMULA141; Jun 19, 2008 at 02:47 PM.
Reply
Old Jun 20, 2008 | 11:09 AM
  #8  
95FORMULA141's Avatar
Thread Starter
Teching In
 
Joined: May 2008
Posts: 8
Likes: 0
From: Guntersville, Alabama
Default

Anyone else got any ideas.... It still has a catalytic converter on it....but not for long. Maybe its stopped up......who knows let me know if you guys can think of anything else though.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

 Brett Foote
story-1

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-2

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-3

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-4

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-5

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-6

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-7

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-8

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-9

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
Old Jun 20, 2008 | 06:42 PM
  #9  
9000th01ss's Avatar
Banned
iTrader: (10)
 
Joined: Feb 2008
Posts: 3,235
Likes: 2
Default

Originally Posted by 95FORMULA141
Anyone else got any ideas.....
heres one, check the ******* fuel pressure!
you think the fuel pressure is fine because it idles ok? it uses more fuel above idle.
**** it keep running in circles.
Reply
Old Jun 20, 2008 | 11:12 PM
  #10  
joshp14's Avatar
TECH Fanatic
iTrader: (5)
 
Joined: Dec 2003
Posts: 1,108
Likes: 0
From: WDM, Iowa
Default

What do you mean it wont rev up? As in it wont go above a certain RPM? Can you drive it? Does it max out at a certain speed or bog down? Quit throwing parts at it and give a better description of the problem.

As said above, check fuel pressure. It could also be a plugged converter.
Reply
Old Jun 21, 2008 | 01:03 AM
  #11  
95FORMULA141's Avatar
Thread Starter
Teching In
 
Joined: May 2008
Posts: 8
Likes: 0
From: Guntersville, Alabama
Default

I'm working on checking the damn fuel pressure.... yes I know it uses more fuel above idle and I know that it requires more fuel pressure to do that. I work about 60 hours a week, and don't have alot of time to **** with it. Thats why I haven't checked it yet. But trust me, my next off day, it will be checked.

But more on the problem; it will not rev above a certain rpm.....and if you drive it, when you try to accelerate it bogs.....yes i know fuel pressure....I'm working on it. Thanks!!
Reply
Old Jun 21, 2008 | 02:30 PM
  #12  
Viper's Avatar
12 Second Club
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (6)
 
Joined: Dec 2001
Posts: 4,909
Likes: 3
From: Cleveland, OH
Default

Could be bad O2 sensors too without throwing a code
Reply
Old Jun 25, 2008 | 02:12 AM
  #13  
95FORMULA141's Avatar
Thread Starter
Teching In
 
Joined: May 2008
Posts: 8
Likes: 0
From: Guntersville, Alabama
Default

Alright, I checked the fuel pressure today and with the switch on, i had 40 lbs, and with the car at idle it was 35 lbs. I believe that 40 isnt going to make it run like it is. since it only has 46 from the factory.
Reply
Old Jun 25, 2008 | 08:45 AM
  #14  
joshp14's Avatar
TECH Fanatic
iTrader: (5)
 
Joined: Dec 2003
Posts: 1,108
Likes: 0
From: WDM, Iowa
Default

Check exhaust back pressure....might have a plugged converter. The symptoms you describe point me in that direction. Back pressure shouldnt be much over 1-2 psi.
Reply
Old Jun 26, 2008 | 09:21 AM
  #15  
95FORMULA141's Avatar
Thread Starter
Teching In
 
Joined: May 2008
Posts: 8
Likes: 0
From: Guntersville, Alabama
Default

Cut the conveter off yesterday. Crunk the car and it ran great. I thought that was the problem but hey, it got a tune up while I was at it. Thanks for the help!
Reply




All times are GMT -5. The time now is 09:09 PM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-09 14:55:56


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-5
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-6
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-7
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-8
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-9
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE