PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Another flashing SES!!!

Thread Tools
 
Search this Thread
 
Old Dec 7, 2003 | 06:48 PM
  #1  
CLOKWRK's Avatar
Thread Starter
On The Tree
iTrader: (9)
 
Joined: Jul 2002
Posts: 114
Likes: 0
From: Michigan
Default Another flashing SES!!!

Ok, first I have to give a short history. Broke a 918 valvespring, got extremely lucky...somehow I did NOT bend the valve. Put in a 915 spring to limp it home. Put spring on and started car, ran smooth, no ticking, no codes from Atap while idling. Drove car very carefully home, not above 2000rpm. Seemed to run fine, no misfires, ran smooth. The SES light started flashing while driving. It would flash 10-12 times (about 1 second intervals) then stop for a few seconds and resume flashing. I have Atap for palm and had it hooked up for the drive home and it said there were no DTC codes!!?? If I stopped at a light and let it idle it would not flash...until I started moving again. Anyone have ANY idea what could be happening?
Reply
Old Dec 7, 2003 | 07:24 PM
  #2  
wrencher's Avatar
wrencher
20 Year Member
iTrader: (2)
 
Joined: Aug 2002
Posts: 4,762
Likes: 2
From: Chicagoland
Default

It might have nicked a valve.

Do a leak-down on that cylinder.

A-tap looks a generic OBD info thus prolly no code, there is something under misfire logs.
Don't know if A-tap can read this.
Reply
Old Dec 7, 2003 | 07:40 PM
  #3  
Carbon's Avatar
TECH Enthusiast
20 Year Member
iTrader: (3)
 
Joined: Apr 2003
Posts: 652
Likes: 0
From: Deer Park (Houston),Tx
Default

I don't know if this has anything to do with your problem, but I think when your SES flashes it means that your catalytic converters fouled.
Reply
Old Dec 7, 2003 | 08:08 PM
  #4  
WS6FirebirdTA00's Avatar
TECH Senior Member
20 Year Member
iTrader: (33)
 
Joined: Mar 2003
Posts: 8,319
Likes: 1
From: North Carolina
Default

if it flashes it means the car is misfiring, should throw a random/multiple misfire code though unless it has to be like that for a while. did it not throw any code when it was flashing? did u look up codes when it was flashin?
Reply
Old Dec 7, 2003 | 10:19 PM
  #5  
CLOKWRK's Avatar
Thread Starter
On The Tree
iTrader: (9)
 
Joined: Jul 2002
Posts: 114
Likes: 0
From: Michigan
Default

Yeah, I had the Atap running when it was flashing...no codes. Not even any stored. I have longtubes without cats also.
Reply
Old Dec 7, 2003 | 10:30 PM
  #6  
WS6FirebirdTA00's Avatar
TECH Senior Member
20 Year Member
iTrader: (33)
 
Joined: Mar 2003
Posts: 8,319
Likes: 1
From: North Carolina
Default

and this just started when u lost the spring?
Reply
Old Dec 8, 2003 | 02:26 AM
  #7  
Inspector12's Avatar
TT-TECH Veteran
20 Year Member
iTrader: (29)
 
Joined: Mar 2003
Posts: 4,779
Likes: 4
From: Pearland
Default

The SES light will come on from single misfires or random misfires and becase of that it may start flashing which indicates that you might be damaging either the motor or the emision system like the cats the car doesn't know that they are not there so no real harm other than you could have one or more cylinders missing. It only takes one to cause this I know this from personal experience so Wrencher might be right do a leak down check it is fast and could save you alot of time if you know some one with a Tech 2 they could tell you exactly which cylinder/cylinders it is that is missing but you do have a good place to start with that broken valve spring. the new spring may not be seating the valve all the way causing loss of compresion and inturn not firing. Just my thoughts on it although not an expert at solving every ones problems via the internet maybe this will hep you get started in the right direction.
Reply




All times are GMT -5. The time now is 03:07 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE