chip burners-long crank time with ARAP 6E code solved
Thread Starter
Melting Slicks
Joined: Apr 2001
Posts: 2,119
Likes: 222
From: Ca.
chip burners-long crank time with ARAP 6E code solved
I already posted this info at diy-prom, but thought I'd post it here too in case anyone missed it. The 89 code has been noted for long crank times as I'm sure you're aware. In Dec. issue of Corvette Fever the writer of the column "wear and tear" mentioned having the same problem; and a friend of his changed what he thought was a crank rpm vs. injector pulse width. So I e-mailed Tunercat and asked them about it. Within a day they sent me an updated 6E tdf with the table "crank fuel PW multiplier Vs. reference pulse (1-16) I changed 1 to 8 from 0 to .5 and voila!!! NO more %$*&#$%^& long crank times with the 6E code on my 86 without the cold start injector!!! I know this has frustrated me for quite a while and figured I couldn't be the only one goin' up a wall and just had to share!!! :cheers: :cheers:
Pro
Joined: Jun 2000
Posts: 686
Likes: 0
From: Crystal Lake, IL USA
Re: chip burners-long crank time with ARAP 6E code solved (drive it)
Good info! Anything else about 6E code a problem on the '86? Did you just burn 6E into a PROM and go, or was it more involved than that?
Thread Starter
Melting Slicks
Joined: Apr 2001
Posts: 2,119
Likes: 222
From: Ca.
Re: chip burners-long crank time with ARAP 6E code solved (Hendej)
Of course I had to adjust the inj. constant and then maf tables a little for my particular combo; but yea, it's pretty much load and go. If you use the arap bin you need to change the fan switch is all to do before starting fine tuning to what you want.
Drifting
Joined: Nov 2000
Posts: 1,722
Likes: 0
From: Big D Tx
Cruise-In II Veteran
Re: chip burners-long crank time with ARAP 6E code solved (drive it)
cool, thanks for the heads up. i have the arap, and i noticed a longer crank time. ill have to take a look at this.
Safety Car
Joined: Mar 2000
Posts: 3,620
Likes: 2
From: Hillsboro OR
Re: chip burners-long crank time with ARAP 6E code solved (drive it)
Glad you were able to get tuner cat to update the ECM config file. I have wanted the location of the acclerator pump table in my EE computer model and all I get from them is 'there are hundreds of parameters in the ECM code....blah blah blah'. Other ECMs config files from tuner cat have the tables defined.
Former Vendor
Joined: Jun 2001
Posts: 7,204
Likes: 6
From: St Marys PA
Re: chip burners-long crank time with ARAP 6E code solved (AquaMetallic94LT1)
I too have this problem and have Tuner Cat. I do not see the table you identified above. How do you get the update from Tuner Cat? I went to their site, but no luck locating. Thanks for the help and great work!
Thread Starter
Melting Slicks
Joined: Apr 2001
Posts: 2,119
Likes: 222
From: Ca.
Re: chip burners-long crank time with ARAP 6E code solved (ski_dwn_it)
I too have this problem and have Tuner Cat. I do not see the table you identified above. How do you get the update from Tunecat
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
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
Pro
Joined: Apr 2003
Posts: 552
Likes: 13
From: Oz
Originally Posted by drive it
Of course I had to adjust the inj. constant and then maf tables a little for my particular combo; but yea, it's pretty much load and go. If you use the arap bin you need to change the fan switch is all to do before starting fine tuning to what you want.
Is the fan switch invert option at x0017, bit5?
Former Vendor
Joined: Jun 2001
Posts: 7,204
Likes: 6
From: St Marys PA
Originally Posted by drive it
I already posted this info at diy-prom, but thought I'd post it here too in case anyone missed it. The 89 code has been noted for long crank times as I'm sure you're aware. In Dec. issue of Corvette Fever the writer of the column "wear and tear" mentioned having the same problem; and a friend of his changed what he thought was a crank rpm vs. injector pulse width. So I e-mailed Tunercat and asked them about it. Within a day they sent me an updated 6E tdf with the table "crank fuel PW multiplier Vs. reference pulse (1-16) I changed 1 to 8 from 0 to .5 and voila!!! NO more %$*&#$%^& long crank times with the 6E code on my 86 without the cold start injector!!! I know this has frustrated me for quite a while and figured I couldn't be the only one goin' up a wall and just had to share!!! 
If you check the archieves, which is why I wish we could have some sticky folders, I wrote a tuning article on this exact subject about 1 year ago.
It describes in great detail exactly what I changed and why it works.
Good stuff
Team Owner
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
The guys (or guy I dunno) at Tunercat are the best! They are always lightning fast to get back to me with any requests I have.
ps.
I have version AJ of $6e right now and that field is in it. What version do you have now?
ps.
I have version AJ of $6e right now and that field is in it. What version do you have now?
Pro
Joined: Apr 2003
Posts: 552
Likes: 13
From: Oz
Originally Posted by scorp508
The guys (or guy I dunno) at Tunercat are the best! They are always lightning fast to get back to me with any requests I have.
ps.
I have version AJ of $6e right now and that field is in it. What version do you have now?
ps.
I have version AJ of $6e right now and that field is in it. What version do you have now?
Scorp,
I use Tunercat for my own stuff ('7747), but I am doing this ARAP for a friends 88, so I am using Tunerpro. I have taken care of the cold start issue, just wanna be sure I have inverted the fan outputs correctly. It's a bit difficult because he lives 1000 miles away, so it's not practical to experiment.
I also plan to adjust the ARAP timing table a bit more to mimic the 88's original table as I have read many times that the ARAP bin has quite a bit of timing in it. So basically I'm just creating an ARAP bin for a basically stock 88.
Team Owner
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
Originally Posted by ben73
Is the fan switch invert option at x0017, bit5?
d = decimal
h = hex
Code:
Address
ARAP ARAP-2 ARAP ARAP-2
------- ---(d)--- ---(d)--- ---(h)--- ---(h)---
00006 91 92 5B 5C
00007 230 6 E6 06
00017 8 40 08 28
