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Old 08-08-2017, 11:29 PM   #1 (permalink)
Torque655
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Issues after EGR delete and KOJO tune install

Installed the *** with KOJO tuned PCM (not original PCM), some gauges, and put a "F" intake manifold on my K1500. It drives great. Plenty of power and I believe it runs smoother than before.

Couple issues though.

1. It throws two codes: P1218 and P1656
2. It usually has delayed cranking before firing on warm starts. Cold starts are always fine.

P1656 might be the tuner forgetting to delete the EGR from the computer. But I want to order the part that sits on the firewall that the vacuum hose runs to out of an L65 truck and see if that deletes it. Anyone got a part number for that?

Any thoughts on what to look at for P1218??

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2001 GMC Sierra 372K miles RCLB 2wd 2500HD LB7/Allison---Daily Diver
1996 K1500 Suburban 6.5/4L80e 8 lug 3.42 gears--"the build"
1993 Trans Am LT1-6 speed

SOLD--1996 GMC k1500 z71 373k miles--, 506 block, 3-4" Diamond eye exhaust, 3.73, K47 upgrade, PTWS battery cables, Lubrication Specialists Oil Cooler/Lines, A Team Turbo, KOJO tune, vacuum pump delete, full "F" manifold swap for EGR delete, Boost/Pyro/Fuel Pressure Gauges, Heath 4wd PMD, 01 Dmax Alternator, '98 HO water pump, 285/75/16 BFG all terrains on MB razor wheels



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Last edited by Torque655; 08-08-2017 at 11:34 PM.
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Old 08-09-2017, 10:10 AM   #2 (permalink)
Tommygunner
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Did you do the KOKO procedure to put the PCM into learn mode? That should get rid of the 1218 code. 1656 has nothing to with EGR it is an issue with the waste gate solenoid. Beings you have no EGR codes. The EGR was most likely deleted in the programming. If you did not do the KOKO. Do it. That may get rid of both your codes.

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The beauty of the Second Amendment is that it will not be needed until they try to take it

If Americans ever allow banks to control their currency. First by deflation then inflation. The banks will deprive the people of all property. Until their children wake up homeless.
1998 GMC K1500 WT, 6.5 TD. 80,000 miles. Auto, 3.73 gears. Remote PMD mounted on the radiator support. KOJO tune WOW! Carter HD lift pump. Feed the beast, GM8 turbo with Hurricane impeller. K&N filter. Ported, gasket matched upper intake. Leroy's braded stainless steel oil lines.
New Bosch injectors. Flow matched 2200 lbs pop
3 1/2" custom Aero turbine exhaust. Nutered Cat
2" Lift RS5000 Shocks. 285 X 17 Bridgestone AT summer tires. 12.50 x 33 x 15 Procomp MTs winter. Powertrax No slip locker in rear.
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Old 08-09-2017, 10:42 AM   #3 (permalink)
Glagulator
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The BARO sensor on the firewall was used on L65 "F" engines up to 1995 only.
Your "S" should have one already, it's the same part.
"S" has a vacuum line to the BARO, "F" does not.
With the EGR delete you should no longer need it.
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Old 08-11-2017, 02:52 PM   #4 (permalink)
Torque655
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Quote:
Originally Posted by Tommygunner View Post
Did you do the KOKO procedure to put the PCM into learn mode? That should get rid of the 1218 code. 1656 has nothing to with EGR it is an issue with the waste gate solenoid. Beings you have no EGR codes. The EGR was most likely deleted in the programming. If you did not do the KOKO. Do it. That may get rid of both your codes.
I went through the instructions that came with the tune so I assume I did it and it was completed. I'll see if I can search the KOKO instructions again and do it again though.

All things with EGR, those solenoids, vacuum pump were all deleted on my truck. Put a rubber vacuum hose cap over the baro sensor on the firewall.
__________________
2001 GMC Sierra 372K miles RCLB 2wd 2500HD LB7/Allison---Daily Diver
1996 K1500 Suburban 6.5/4L80e 8 lug 3.42 gears--"the build"
1993 Trans Am LT1-6 speed

SOLD--1996 GMC k1500 z71 373k miles--, 506 block, 3-4" Diamond eye exhaust, 3.73, K47 upgrade, PTWS battery cables, Lubrication Specialists Oil Cooler/Lines, A Team Turbo, KOJO tune, vacuum pump delete, full "F" manifold swap for EGR delete, Boost/Pyro/Fuel Pressure Gauges, Heath 4wd PMD, 01 Dmax Alternator, '98 HO water pump, 285/75/16 BFG all terrains on MB razor wheels



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Old 08-11-2017, 04:00 PM   #5 (permalink)
Tommygunner
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KOKO link https://www.dieselplace.com/forum/63-...ml#post5887642
There is a link in post 4 to the KOKO procedure. You don't need a scan tech 2 tool.
Do steps 4-10 on the right side of the PDF doc. Be sure to clear all the codes before doing it and engine is warmed up to 170 degrees.
__________________
The beauty of the Second Amendment is that it will not be needed until they try to take it

If Americans ever allow banks to control their currency. First by deflation then inflation. The banks will deprive the people of all property. Until their children wake up homeless.
1998 GMC K1500 WT, 6.5 TD. 80,000 miles. Auto, 3.73 gears. Remote PMD mounted on the radiator support. KOJO tune WOW! Carter HD lift pump. Feed the beast, GM8 turbo with Hurricane impeller. K&N filter. Ported, gasket matched upper intake. Leroy's braded stainless steel oil lines.
New Bosch injectors. Flow matched 2200 lbs pop
3 1/2" custom Aero turbine exhaust. Nutered Cat
2" Lift RS5000 Shocks. 285 X 17 Bridgestone AT summer tires. 12.50 x 33 x 15 Procomp MTs winter. Powertrax No slip locker in rear.
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Old 08-12-2017, 12:48 AM   #6 (permalink)
Torque655
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Quote:
Originally Posted by Tommygunner View Post
KOKO link [URL]
Do steps 4-10 on the right side of the PDF doc. Be sure to clear all the codes before doing it and engine is warmed up to 170 degrees.
How do you clear the codes? I don't have a scanner or any kind of DTC tool at the moment.

Procedure is simple enough. Warm up truck--shut off---clear codes---do KOKO---live the dream!!
__________________
2001 GMC Sierra 372K miles RCLB 2wd 2500HD LB7/Allison---Daily Diver
1996 K1500 Suburban 6.5/4L80e 8 lug 3.42 gears--"the build"
1993 Trans Am LT1-6 speed

SOLD--1996 GMC k1500 z71 373k miles--, 506 block, 3-4" Diamond eye exhaust, 3.73, K47 upgrade, PTWS battery cables, Lubrication Specialists Oil Cooler/Lines, A Team Turbo, KOJO tune, vacuum pump delete, full "F" manifold swap for EGR delete, Boost/Pyro/Fuel Pressure Gauges, Heath 4wd PMD, 01 Dmax Alternator, '98 HO water pump, 285/75/16 BFG all terrains on MB razor wheels



Youtube: 2nd Momentum Garage
Instagram: @2ndmomentumgarage
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Old 08-12-2017, 01:01 AM   #7 (permalink)
JMJNet
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The Suburban Club Member

Did you communicate all this to Kojo?

Otherwise, you may want to do that since he is the one who did the tune.
Last time this happened, he had to work with the user to get the correct tune for the specific truck.
There may be small detail that was not communicated for your specific truck.
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Old 08-12-2017, 11:40 AM   #8 (permalink)
Tommygunner
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You have to get ahold of a scanner to clear the codes to do the KOKO thing. Just about any OBD2 scanner will work. I had to do KOKO when I got my Tune. After doing the procedure, my new PCM learned the timing settings in my truck and I have not had any problems since. Its a good tune I really like it.
Beings you are getting a timing related code and have a different turbo which may be causing the boost solenoid code. The PCM will need to learn your settings and the codes should go away. If not get a hold of KOJO. Did you get the PCM form Patrick at Walking J or directly from Finland?
__________________
The beauty of the Second Amendment is that it will not be needed until they try to take it

If Americans ever allow banks to control their currency. First by deflation then inflation. The banks will deprive the people of all property. Until their children wake up homeless.
1998 GMC K1500 WT, 6.5 TD. 80,000 miles. Auto, 3.73 gears. Remote PMD mounted on the radiator support. KOJO tune WOW! Carter HD lift pump. Feed the beast, GM8 turbo with Hurricane impeller. K&N filter. Ported, gasket matched upper intake. Leroy's braded stainless steel oil lines.
New Bosch injectors. Flow matched 2200 lbs pop
3 1/2" custom Aero turbine exhaust. Nutered Cat
2" Lift RS5000 Shocks. 285 X 17 Bridgestone AT summer tires. 12.50 x 33 x 15 Procomp MTs winter. Powertrax No slip locker in rear.

Last edited by Tommygunner; 08-12-2017 at 11:49 AM.
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Old 08-13-2017, 12:53 PM   #9 (permalink)
Torque655
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Yes, he saw a message on facebook I sent and said he is unsure but may have forgotten about the EGR/vacuum pump deletion. I want to properly do the KOKO procedure to see if that takes care of everything before potentially sending anything back.

Any recommendation on scan tool? I don't want the cheapest thing out there but I'm not a shop either. Leroy sells Auto Enginuity Scan Tool little over $400. Any input on best value scan tool for the dollar?
__________________
2001 GMC Sierra 372K miles RCLB 2wd 2500HD LB7/Allison---Daily Diver
1996 K1500 Suburban 6.5/4L80e 8 lug 3.42 gears--"the build"
1993 Trans Am LT1-6 speed

SOLD--1996 GMC k1500 z71 373k miles--, 506 block, 3-4" Diamond eye exhaust, 3.73, K47 upgrade, PTWS battery cables, Lubrication Specialists Oil Cooler/Lines, A Team Turbo, KOJO tune, vacuum pump delete, full "F" manifold swap for EGR delete, Boost/Pyro/Fuel Pressure Gauges, Heath 4wd PMD, 01 Dmax Alternator, '98 HO water pump, 285/75/16 BFG all terrains on MB razor wheels



Youtube: 2nd Momentum Garage
Instagram: @2ndmomentumgarage
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Old 08-13-2017, 02:20 PM   #10 (permalink)
Tr00b
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If you have an Android smartphone I have the Torque app and and ObdLink Bluetooth scanner. Went through a dozen ELM327s before going to the better one. You can have very advanced obd2 diagnostics for under 100 with data logging and gps synchronization. Unfortunately most lamp posts gave more OBD2 stuff than these trucks. Pretty uneventful stuff. Pretty cool for most other newer vehicles though.

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Repairs:
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Ashland Muffler 2.5 X-over 12/13 FTB FFM by paleyjim, ported upper egr delete S-code, lower F-code, ported IP fitting, FASS DRP-02 lift pump 3/16 Transgo Shift Kit by paleyjim, Energy Susp. engine+trans mounts 9/16 Ported GM8, Diamond Eye, Quadstar tune 11/16 K47 Box, Glowshift 3-1 1/17 Leroy's Billet Crank pulley, Fluidampr. 9/17
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