North American Turbocoupe Organization



more trouble codes, gillis ? 's also
charles88tc Offline
Senior Member
#1
Okay, most of you, namely Jeff and Pete probably remeber my code 22 questions. Finally got that mess resolved with the BP sensor out of an 87 or 88 v6 car. I erased it today, I drove the car a ways, and decided to check the codes again and IM getting a constant KOEO 83 and a CM 42, The 42 came after I erased the 22. I was only getting about 5 to 7 psi of boost, now IM max-ing out at 10, I only had about half a thread showing on my gillis. So I backed it out about 3 three threads. It runs alot better but still not getting where I want the boost to be. ANy suggestions on how many threads to put gillis at to reach 15psi.


Thanks to EVERYBODY that helped me on my bp sensor issue, my car runs ALOT BETTER and About 10 more miles to the gallon.
NATO IS THE BEST!
88 tc 5sp, Gillis, K&N on vam, Redneck cat back exaust (nothing from the cat back) 220,000 mile short block. Rebuilt 86 head and cam.
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trashline Offline
Posting Freak
#2
haha have fun with the 42 i had and still have the same code, only at idle or low vacuum like Pete. the no boost Id say start looking for vacuum leaks and blown IC hoses. you crank that gillis in all the way you should be at like 20 psi. on my gillis one full turn equaled about a 2 psi difference. I have a dremmel slit in mine so i can the number of turns.

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1966 mustang
1988 tbird
Finally have mods that I can post... 373 gears with a brand new t5. K&N cone. Gillis set to 15 psi. Walbro 255 lph. Kirban afpr. Kelly Evo Z tires. Energy suspension front swaybar bushings. Rebuilt topend with stock components.

Working on a FMIC w/ the stock IC.
Brian

www.BCPCustom.com

06 Cobalt SS
66 mustang 289 C4 handfully modded

Stingers IC install and tbird photos
http://community.webshots.com/user/trashline
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charles88tc Offline
Senior Member
#3
thanks man. I just put on a set of Quick Fix IC hoses out of the tech articles. Im also suspect of the turbo to manifold possibly leaking, A couple weeks ago I backed off the top bolts and re-tightened them, couldnt get to the bottom side. But if I cannot get the boost issue resloved, I had thought about taking the whole turbo, manifold and all off and get new studs and hardware and assemble it in a vice and install it all as an assembly. I trimmed about a half inch off inch of the quick fix hose. Another thing is when my radio was stolen, my boost gauge was also stolen, ripped from the vacuum line it was attached to in the package tray above the radio. So I need to check that and the tree to. The gauge was gone but the clamp that held it to the vacum line was still there. Like they had just ripped it out along with the radio. Thanks Any help is really appreciated.
88 tc 5sp, Gillis, K&N on vam, Redneck cat back exaust (nothing from the cat back) 220,000 mile short block. Rebuilt 86 head and cam.
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trashline Offline
Posting Freak
#4
could be a leak from the exhuast. the best way to see a vacuum leak in my opinion is either with a vacuum gauge, which my cars idling vacuum is 19-20" Hg, or use a can of starting fluid and spray all your hoses and vacuum connections, the idle will race if it was a leak and you spray over it.

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1966 mustang
1988 tbird
Finally have mods that I can post... 373 gears with a brand new t5. K&N cone. Gillis set to 15 psi. Walbro 255 lph. Kirban afpr. Kelly Evo Z tires. Energy suspension front swaybar bushings. Rebuilt topend with stock components.

Working on a FMIC w/ the stock IC.
Brian

www.BCPCustom.com

06 Cobalt SS
66 mustang 289 C4 handfully modded

Stingers IC install and tbird photos
http://community.webshots.com/user/trashline
Reply

charles88tc Offline
Senior Member
#5
Yeah, I know about the starting fluid trick my Explorer is notorius for leaking on the intake plenium. On my autometer vac/boost gauge that was in the car it normally had about 15 inches of vacum at idle. When I had the valve cover off my dad said that the cam showed a little bit of wear. That could posibbly be why the vacum is a bit low unless theres a leak some where. IM open for suggestion.
88 tc 5sp, Gillis, K&N on vam, Redneck cat back exaust (nothing from the cat back) 220,000 mile short block. Rebuilt 86 head and cam.
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trashline Offline
Posting Freak
#6
well, my 300,000 + mile motor in the stang has 18 " Hg on idle. how is your timing and stuff like that?

my cam in my car has 190,000 miles on it, when i got the new head i used the old cam that was worn down. but cam wear can have an effect on vacuum. is it steady at 15 or does it shake all over?

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1966 mustang
1988 tbird
Finally have mods that I can post... 373 gears with a brand new t5. K&N cone. Gillis set to 15 psi. Walbro 255 lph. Kirban afpr. Kelly Evo Z tires. Energy suspension front swaybar bushings. Rebuilt topend with stock components.

Working on a FMIC w/ the stock IC.
Brian

www.BCPCustom.com

06 Cobalt SS
66 mustang 289 C4 handfully modded

Stingers IC install and tbird photos
http://community.webshots.com/user/trashline
Reply

charles88tc Offline
Senior Member
#7
it was steady, but that was also during the time I was having those code 22's also. I havent had the extra cash to go get another gauge. My boost measurements were with the factory gauge. I noticed usually about 1 or 2 pounds difference with the factory gauge and the autometer that was stolen.
88 tc 5sp, Gillis, K&N on vam, Redneck cat back exaust (nothing from the cat back) 220,000 mile short block. Rebuilt 86 head and cam.
Reply

charles88tc Offline
Senior Member
#8
I havent checked the timing, My brothers back intown, and is the only one I know of with a timing light. Maybe next weekend I can get it from him and check it out as well as the vacum leaks. I think Ill try to check aroung for another boost gauge too. Could my cat being clogged be a reason for low boost? It ras ran rich for a long time and may have a lot of carbon in it(the EGR DIDi mean almost clogged), I dont know is why I am asking, My explorer s cat was clogged and it ran like crap after taking it off and banging it out and pressure wahing it at the carwas it ran better. Thanks
88 tc 5sp, Gillis, K&N on vam, Redneck cat back exaust (nothing from the cat back) 220,000 mile short block. Rebuilt 86 head and cam.
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grey88smokin Offline
Posting Freak
#9
If you rev the engine to 2K rpm vac should come back to 20hg of vac. If vac doesnt come back that would indicate a cloged cat, or other problem.

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My TC
84 SVO 1C
08 MKZ
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Ryan H Offline
Posting Freak
#10
Check the turbo to manifold and manifold itself for black soot, indicating where a leak could be. You have the 42 (rich) code, so more than likely you'll be able to spot any cracks or bad connections.

For now since you can't check your ignition timing, check the cam/crank timing. How does the car run? I went through this same problem and it turned out to be my wastegate flapper seat was damaged and letting boost out.

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Ryan Harris

88 TC, 5 spd, B&M Ripper Shifter, SPEC Stage 3, Walbro 190 LPH, Kirban, K&N, 3.73 rear, KS disconnected, BCS bypassed, 89K miles
'88 TC Smile Walbro 255HP, Stinger FMIC, PIT BOV, Pro 5.0, Kirban, RR cam, FRPP strut tower brace, T3
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