87 GLHS codes 33, 41, and 52 at the same time - Turbo Dodge Forums : Turbo Dodge Forum for Turbo Mopars, Shelbys, Dodge Daytona, Dodge SRT-4, Chrysler PT Cruiser, Omni and more!

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post #1 of 19 Old 01-27-2018, 05:07 PM Thread Starter
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87 GLHS codes 33, 41, and 52 at the same time

The GLHS was running rough when I started it.
It stumbled and died about 10 minutes after idling.
Iíve never got these codes before and all three happened together.

Code 33
A/C Cutout Relay
If the relay does not turn on and off when it should.

Code 41
Alternator Field Control (Charg-ing System)
If the field control fails to switch properly.

Code 52
Oxygen Feed-back System
If the system stays rich for more than 2 minutes.
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post #2 of 19 Old 01-27-2018, 05:20 PM
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Re: 87 GLHS codes 33, 41, and 52 at the same time

I would suggest exercising the blue and red connectors at the logic module Jim. Pull them off easy, look for signs of water or corrosion, dab in a bit of dielectric grease on each female connector, reassemble. If you get real curious, remove the cover of the logic module and confirm it has not gotten moist/wet inside and the PCB and edge connector pins all look good and crisp.
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post #3 of 19 Old 01-27-2018, 05:58 PM Thread Starter
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Re: 87 GLHS codes 33, 41, and 52 at the same time

Quote:
Originally Posted by ILIKESHELBYS View Post
I would suggest exercising the blue and red connectors at the logic module Jim. Pull them off easy, look for signs of water or corrosion, dab in a bit of dielectric grease on each female connector, reassemble. If you get real curious, remove the cover of the logic module and confirm it has not gotten moist/wet inside and the PCB and edge connector pins all look good and crisp.
Steven:

You just reminded me of something.
We had a sudden change in weather and the whole car was covered in moisture from the warm weather and rain (car is in the garage).
The car cover, engine compartment and windows were all wet.

Iíll bet what you said about the LM is the cause.
The last time I was at the car I got a code 11and 12.
12 having to do with power to the logic module.
Thatís got to be it.

Thanks👍🏻👍🏻👍🏻
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post #4 of 19 Old 01-30-2018, 04:13 PM Thread Starter
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Re: 87 GLHS codes 33, 41, and 52 at the same time

Updates:

No more code 33 and 52
Code 12: normal since I disconnnected the battery.
Code 22: normal since I disconnected the coolant temp sensor (to set the timing)

Disconnected and removed the battery.
Disconnected the two multi-pin connectors from the power module.
Cleaned both connectors and the power module pin-outs with Caig Deoxit.
Added dielectric grease and reconnected.
Battery reinstalled.
Turned the key a few times to prime the injectors.
Tried to start it and it cranked but wouldnít turn over.
Foot to the floor and cranked it and it started.
Had to maintain 2000rpm to keep it running.
After a few minutes it idled on its own.
Tried to check timing and when I removed the coolant sensor connector ( fan on continuously) the engine died.

Tomorrow Iíll check the connections at the Logic Module including the MAP sensor.
Could also be a vacuum leak.
Could be the timing is off.
Could be moisture on the connectors as Todd said.

A real stupid question that I have to ask:
What would happen if the fuel feed and return lines were reversed at the tank?
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post #5 of 19 Old 01-30-2018, 05:03 PM
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Re: 87 GLHS codes 33, 41, and 52 at the same time

"What would happen if the fuel feed and return lines were reversed at the tank?"

Well I guess the fuel pump would then be pumping backwards into the fuel pressure regulator so I don't think but dont know that the regulator is going to work with fuel flowing in the wrong direction. I dunno.

The pedal to the floor and it cranks is the common get it to start when it is flooded process. WOT during cranking and the brain turns off the fuel injectors...this is to clear excess fuel from the cylinders. If you had a leaky fuel injector or fuel pressure regulator, that fuel is going into the engine and will if enough flood the engine, that is why it starts then blubbers till it can clear all the excess fuel. I would suggest that maybe you see if you are loosing fuel pressure immediately when you turn the key to off after engine has been started or before engine starts and the fuel pump has primed the system. You MAY be leaking fuel into the cylinder(s).

Just a side note, cranking the engine w/o the HEP disconnected will still allow the fuel pump to run and the injectors to fire which will flood the engine. This can happen when you do something like pull the coil wire to keep it from starting while you get the engine to turn over to build OIL pressure first...like right after a rebuild. WOT during cranking will help clear excess fuel from a fuel soaked cylinder(s).
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post #6 of 19 Old 01-30-2018, 06:37 PM Thread Starter
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Re: 87 GLHS codes 33, 41, and 52 at the same time

Thanks Steven.
I never should have sold my fuel pressure gauge.
I’ll get a gauge kit and check the pressure at the rail.
After 31 years there’s a good possibility there’s a leak in the injector(s) or the FPR.

Last edited by Jim Falco; 01-30-2018 at 08:28 PM.
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post #7 of 19 Old 01-30-2018, 07:34 PM
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Re: 87 GLHS codes 33, 41, and 52 at the same time

FPRs often start to leak after age especially if the car was parked for a longer period of time, like years. I have had 2 maybe 3 go bad on me not long after bringing the car back to life. One way to tell quickly if it is leaking is to prime the pump or run the car a bit then shut it off, wait maybe a minute and pull the vacuum line off the FPR. If it is wet or drips out fuel you know for sure it is leaking and needs to be replaced.
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post #8 of 19 Old 01-30-2018, 10:28 PM Thread Starter
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Re: 87 GLHS codes 33, 41, and 52 at the same time

Iím going to try that tomorrow.
Thanks again👍🏻
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post #9 of 19 Old 01-31-2018, 05:59 AM
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Re: 87 GLHS codes 33, 41, and 52 at the same time

Quote:
Originally Posted by Jim Falco View Post
A real stupid question that I have to ask:
What would happen if the fuel feed and return lines were reversed at the tank?
That would be hard to do since the outlet at the tank is 5/16" and the inlet (return) is 1/4".

Code 52 will not set immediately, it takes time to meet the criteria to set the code, however you mentioned you had a Code 41...
If charging voltage or battery voltage is low the controller increases injector pulse width which will cause you to be rich and set a Code 52.
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post #10 of 19 Old 02-02-2018, 12:56 PM Thread Starter
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Re: 87 GLHS codes 33, 41, and 52 at the same time

Quote:
Originally Posted by NAJ View Post
That would be hard to do since the outlet at the tank is 5/16" and the inlet (return) is 1/4".

Code 52 will not set immediately, it takes time to meet the criteria to set the code, however you mentioned you had a Code 41...
If charging voltage or battery voltage is low the controller increases injector pulse width which will cause you to be rich and set a Code 52.
Regarding the fuel hose routing, yes I did route them correctly.
I figured I better check every last thing from the tank to the fuel rail, and the reason for my stupid question.Thanks Jan:

Regarding codes 41 and 52, thatís now making a lot of sense because a few months ago it started right up.
Then I didnít try to start it for the first time in months, and these things started happening.
The voltage gauge shows itís in a high state of charge.
Iím going to take the battery out and charge it.
Itís brand new and wasnít charged up before I installed it so Iíll bet itís low on charge.
The continuous brutal cold weather didnít help either.

Thanks again, because if itís that, and the car starts, then you saved me the cost of an FPR 👍🏻👍🏻👍🏻
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post #11 of 19 Old 02-04-2018, 01:12 PM
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Re: 87 GLHS codes 33, 41, and 52 at the same time

Jim, are you running the stage two logic module? I am in 958. If I allow the fuel pump to prime more than once when cold, the car is hard to start.

Could my base ignition timing be too advanced? If it gets too much fuel from the prime it goes "ruh, ruh, ruh....ruh......ruh.....ruh.....ruh". It does this regardless of outside temp. Though it's a little slower cranking when it's under 40 degrees out.
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post #12 of 19 Old 02-07-2018, 09:43 PM Thread Starter
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Re: 87 GLHS codes 33, 41, and 52 at the same time

Quote:
Originally Posted by INSATANSSEAT View Post
Jim, are you running the stage two logic module? I am in 958. If I allow the fuel pump to prime more than once when cold, the car is hard to start.

Could my base ignition timing be too advanced? If it gets too much fuel from the prime it goes "ruh, ruh, ruh....ruh......ruh.....ruh.....ruh". It does this regardless of outside temp. Though it's a little slower cranking when it's under 40 degrees out.
Iím running the Mopar Performance stage II yes.
And yes thatís the same sound mine makes and slower when itís cold.
My timing hasnít been changed so itís not that.
Iím just waiting for some warmer weather and some sun and Iíll get back to it.
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post #13 of 19 Old 02-10-2018, 12:53 AM
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Re: 87 GLHS codes 33, 41, and 52 at the same time

Interesting! What I do to combat the issue is to go straight from the off position to start so the ASD can't prime the motor. It seems to fire up really quick that way.

This is all in the past now though. I might be plopping a super 60 SMEC in if I can get one of these new Turbos Unleashed harnesses soon enough to put in and experiment with. Otherwise I might have to use the old modded SMEC harness from Dennis Doza's drag car for right now. The head is off. I have a ported +1 valve 287 I'm going to run this year.
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post #14 of 19 Old 02-10-2018, 10:16 AM Thread Starter
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Re: 87 GLHS codes 33, 41, and 52 at the same time

This is all in the past now though. I might be plopping a super 60 SMEC in if I can get one of these new Turbos Unleashed harnesses soon enough to put in and experiment with. Otherwise I might have to use the old modded SMEC harness from Dennis Doza's drag car for right now. The head is off. I have a ported +1 valve 287 I'm going to run this year.[/QUOTE]

TU is making harnesses?
👍🏻Excellent
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post #15 of 19 Old 02-11-2018, 01:09 PM
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Re: 87 GLHS codes 33, 41, and 52 at the same time

Yes. Chris Wright is working with the manufacturer right now. It seems like GLHS and L body turbo SMEC upgrade might be top priorities. I found out on Facebook a few weeks ago.

Are you on Facebook Jim?

I got my +40% injectors and my new turbo and exhaust for the GLHS from Dennis yesterday. Thank you Dennis Doza!
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