Help: '88 no power under load
Thread Starter
Instructor
Joined: Feb 2011
Posts: 114
Likes: 0
Help: '88 no power under load
Your assistance is greatly appreciated.
No power under load from small throttle through to WOT. Stumbling, no "power".
My 1988 has been modified with the American Racing Header's (no smog, no egr) I've just put in a brand new adjustable fuel pressuer regulator and it's spot on 48 lbs. Timing set at 6 degrees btdc. Brand new TPS. Idles and Rev's just fine sitting still, only under load does it stumble and falter. All new ignition and cooling too.
Any idea's are appreciated. I don't really want to throw more money at it guessing.
No power under load from small throttle through to WOT. Stumbling, no "power".
My 1988 has been modified with the American Racing Header's (no smog, no egr) I've just put in a brand new adjustable fuel pressuer regulator and it's spot on 48 lbs. Timing set at 6 degrees btdc. Brand new TPS. Idles and Rev's just fine sitting still, only under load does it stumble and falter. All new ignition and cooling too.
Any idea's are appreciated. I don't really want to throw more money at it guessing.
Instructor
Joined: Jun 2011
Posts: 182
Likes: 0
From: Bowling Green Ky
Your assistance is greatly appreciated.
No power under load from small throttle through to WOT. Stumbling, no "power".
My 1988 has been modified with the American Racing Header's (no smog, no egr) I've just put in a brand new adjustable fuel pressuer regulator and it's spot on 48 lbs. Timing set at 6 degrees btdc. Brand new TPS. Idles and Rev's just fine sitting still, only under load does it stumble and falter. All new ignition and cooling too.
Any idea's are appreciated. I don't really want to throw more money at it guessing.
No power under load from small throttle through to WOT. Stumbling, no "power".
My 1988 has been modified with the American Racing Header's (no smog, no egr) I've just put in a brand new adjustable fuel pressuer regulator and it's spot on 48 lbs. Timing set at 6 degrees btdc. Brand new TPS. Idles and Rev's just fine sitting still, only under load does it stumble and falter. All new ignition and cooling too.
Any idea's are appreciated. I don't really want to throw more money at it guessing.
possibility that exhaust system is restrictive. retarded timing causes a soft throttle. would you bet that it is actually 6*? if not set properly, it can be retarded but appear to be advanced.
but...sounds like insufficient fuel. no missing, just not performing.
someone will have the same experience and can help more than I.
Thread Starter
Instructor
Joined: Feb 2011
Posts: 114
Likes: 0
Thread Starter
Instructor
Joined: Feb 2011
Posts: 114
Likes: 0
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Team Owner
Joined: Jan 2003
Posts: 20,304
Likes: 240
From: Summerland B.C. Canada
Thread Starter
Instructor
Joined: Feb 2011
Posts: 114
Likes: 0
I did the tape the tape the guage to the windshield. Under load it seemed inconclusive to me. It was up and down?? I was hoping it would seriously go one way or the other. With the vacuum line plugged in, it is exactly 10 lbs lower.
Team Owner
Joined: Jan 2003
Posts: 20,304
Likes: 240
From: Summerland B.C. Canada
Thread Starter
Instructor
Joined: Feb 2011
Posts: 114
Likes: 0
Corrected but not Corrected
Agent 86, nice, you were getting close.
I FIGURED IT OUT! Yeah.
Here's what it was.
I bought one of those new "fancy" ""corrected"" distributor caps from accell for the clean look and tidy wiring. It didn't like it. Today, I put back the old one for testing, after a new TPS and fuel pump still no dice. Changed out the distributor cap to the old one,...runs like a champ!!
I was glad it wasn't the chip. No codes. PCM for less had everything I did to it and it was fine, runs real strong now with an American Racing Header no smog with Cats in the xpipe. into 2.5 stock type no drones for a turbo sound. It does not sound like a mustang gt thats for sure.
Thanks again guys. I really appreciate your taking the time to help me with your suggestions. I was just under the knife, and start chemo this coming Monday, so I wanted to finally sort it before feeling like crap . (Having goofed with it all spring (Header install on a 4+3 WITH KC4 was a challenge, but I was up for it).
Have a wonderful Day!!!
Natilla the Hun
