I have a 1993 F150 4x4 5 speed
I just bought a 3145 EQUUS Code reader and these are the codes i pulled

C 10, 11 R 11, 18, 40, 42, 52

10 Cyclinder 1 has a problem

11 System ok

18 SPOUT circuit open or Spark Angle Word (SAW) circuit failure

40 WTF is that its not listed in my code book

42 HEGO (HO2S) sensor voltage high/systen rich

52 Power Steering pressure switch open

OK heres my questions if i have codes popping up why is number 11 poping up?

WTF does number 18 mean?

40 WTF is it?

42 O2 sensors bad?

52 WTF is a Power steering pressure switch open?

 

I have the same code reader and I also have the Powertrain Control/Emissions Diagnostics Manual.

The codes: C 10, 11 R 11, 18, 40, 42, 52 you have listed are pretty straight forward.

If you performed the cylinder balance test, then you have to separate code 10 & 40 from the rest. That would indicate problems with cylinder #1 and #4. According to the manual, your '93 doesn't have SEFI, unless there was a computer swap from a donor car, but that seems unlikely.

If you separate codes from cylinder balance test, code 10 is "Separation Code". the code #52 you got, was from the test not detecting pressure varaitions from the Power Steering Pressure Switch. After code reader received cylinder id, turn the steering wheel about a half-turn for 3-5 seconds, then release. If you did this, then try doing it a second time, to rule out error.

Code 42: If you dual HEGO2 sensors, most noteably on mustangs, 1 for each exhaust bank, then it's the right (passenger side). If you have 1 O2 sensor in the upper half of the passenger side exhaust bank, it's just a signal O2 sensor. The lower O2 sensor in the H-pipe is the HEGO sensor. Most likely it's bad, depending on age and whether or not it been damaged with contaminate fuel. You can remove and use a DVOM to test it. Simply put it in vise and use a torch to heat the tip, and watch for reading to switch using the OHM's part of the DVOM.

Code 18 is a little bit more complicated. It's best to have a Haynes manual on hand for circuit checks. My ford manual instructs in checking continuity between SPOUT circuit and the 60-pin wiring harness. There are many more checks involved other than just this one. I have mentioned in the past that if you are looking for open circuit, it is usually best to disconnect the negative battery cable and since yours deals with TFI igntion system, check all electrical connections for corrosion and clean contacts on suspected connectors. If you decide to check the 60-pin harness, be sure to take precautions to avoid damaging it.

Hope this helps. Let us know what you find. Someone else may chime in about Code 18.

 

thanks ouldnt get to it today but i may beable to do it tomarrow

 

To do a cylinder balance test you have to have a SFI fuel system and a stock 1993 does not.
10 is a space, no code.
52 means you did not turn the steering wheel during the test.
18 means you have an open IDM wire or resister.
There is no 40.
11 is system passed the code check.

How does it run?
When you get other codes with 11 and erroneous codes it does not sound good for the computer.

 

it burns rich as hell and it high idels at start up but if you let it warm up shes fine but other than that she runs damn good im thinking that i may not have used the reader exacty correct cause i went by the fly of my pants so imma read the manual and try it again lol

 

Actually the Equus 3145 does do a cylinder balance test I vaguely remember something about it shutting down each cylinder or something along those lines one by one an measuring the impact each individual cylinder has on the engines overall operation. and if I recall Correctly Robert called it right I think the cylinder at faults designation is which ever cylinders screwed up plus 0 E.G. 30-cylinder 3 50-cylinder 5 ect. ect. it's one of the other diagnostic functions they included until I read the book I didn't know it had that functionality either.

Yep confirmed on page 42 of the book infact if you run the test 3 times consecutively 3 times it will even tell you the severity of the discrepancy of that cylinder

 

court1100f,
No the Equus 3145 does NOT do a cylinder balance test, the computer does on a SFI truck.
The Equus 3145 can read the cylinder balance test but so can you by counting the flashes on the MIL.
The stock 1993 is not a SFI truck.
So no he can not run a cylinder balance test.
I also have a Equus 3145.

 

I have the same code reader. It should show on page 6 and 7 that there is no SEFI listing for 85-95 F-series truck

 

Hmm then they should have included in those instructions set on page 42 which years on F-series that test was possible because with out them specifying it gives the impression that it can infact do a cylinder balance test on 87-95 when infact prior to 94 you can't. and Yes I know that the 87-93 use batch fire to fire each batch of injectors.but didn't atleast in F150 applications 1994 and up go to SFI???? Irregardless of OBD1 or OBD2 computer control???
oh and It occured to me after my initial post that the Car engines used SFI sooner than the trucks

looked at the book lol to see where I missed it and it appears it was available for the F-Series in 94-96 on the pushrod engines of the 1/2 tons

 

Yes you can run the cylinder balance test on some 94-95 trucks. They would be the all the 1994-1995 5.0L trucks and the 1995 4.9L & 5.8L California truck engines.

 

SEFI came w/ MAF. No MAF, you ain't got SEFI (to the best of my knoweledge). That's a big perk you get when you do a MAF conversion from speed density that doesn't get talked about much. Anyway, w/o individual injector control (bank fired), as mentioned, that test isn't possible.

One thing that's important, that most people miss, it states that all KOEO (off) codes should be delt w/, before proceeding to the KOER (running) scan, or KOER codes may not be valid.

So, what are your KOEO codes & continuous memory's?

 

i read part of the book 10 = problems with cyclinder 1 but with the KOEO code it pulled an 11, on the KOER it pulled 11, 18, 40, 42, 52,
40 = problem with cyclinder 4

 

See page 35 re: 10. Separator code. When you see it, rev the engine once & turn the steering wheel a couple inches & return direction. That's your #52.

Does your engine have a MAF sensor?

#18 - Is your spout plug out/ missing?

#42 as continuous memory is no switching. #42 as running code, system rich. How many miles on the o2? Running 87 octane? Condition of ignition system? Geese, Lots of possibilities.

I'm still having a problem w/ #40, if you don't have a MAF sensor (therefore no SEFI). Also #40 won't be tucked in the middle of other code #'s. The cylinder balance test is after the KOER test.