CODE #83 #84 #85 93FZJ80 issue help (1 Viewer)

Joined
Feb 11, 2017
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Orlando, FL
There are two things I do not leave my garage without: spare fusible links and spare ECU. Virtually everything else can be band aided simply.

If I was leaving on a year long trip in a 25 year old rig I certainly wouldn’t leave without a spare.

Some may call me crazy.

I've got the Fusible links spare, and a Starter spare. The ECU is new to me, So is it then worth it to get that swapped out with the newer ECU? As in there could be no other answer to all these issues other than a bad ECU?
 

semlin

curmudgeon
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Mar 27, 2003
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north of 49
I hate to open up an ancient wound but I have looked all around this site to no avail.

I have been working on getting my 93 Cruiser ready for a year long road trip coming up this next year for the last 6 months, chasing all the little gremlins out and attempting to get everything running smooth.

Since doing a full tune up on the truck including spark plugs, wires, distributor cap and rotor, pcv valve and hoses, and also changing out the tps sensor. All this to try and get the idle smoothed out as it would start off at a high idle and eventually drop to 400-500 RPMs and struggle to stay on.

Recently its been running fairly well, idle has been better than in the past, however the shifting has started getting erratic. I originally thought it could've been due to the extra weight of a drawer system, fridge, and dual battery setup that tipped the scale for the transmissions shift points but now its just gotten crappier and crappier of a drive with the transmission stumbling all over the place.

Finally this last week the truck gave me the engine codes noted above and all over about the 93's having a bad ECU. However, after reading this and many other threads then venturing out to my truck to see what ECU I have only to be greeted by the "newer" 89661-60221 ECU.... I reset the codes by pulling the EFI fuse and hoped it wouldn't come back. Yet now here I am not quite a week later having these same codes and still a tranny that has no clue what to do when rolling through traffic and feathering the gas peddle then eventually throwing these codes and turning off once I am accelerating again.

My question is CruiserParts seems to have used ECUs for $200 but has anyone ever heard of these 89661-60221 ECUs to also develop this problem or am I just not looking in the right spot?....

Any help is very much appreciated oh wise haters of mud.

i would check around your ecu for water and corrosion, apply dieletric grease to all the connectors and check your windshield for leaks and make sure your sunroof drain is not leaking.

i got those codes and never replaced my ecu but i did replace a leaky windshield gasket. the codes went away.
 
Joined
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Orlando, FL
Pulled ECU and looked around it, the thing looks brand new all over and the whole area around it is clean. I did have a windshield replaced but it leaked on the top driver side until they fixed it, other than that the truck is pretty well sealed and no clogged sunroof drains. The only thing slightly suspect was inside the plugs there was some brown liquid but to me it felt oily so I would assume it was factory dielectric grease (let me know if this is a wrong assumption). When you had mentioned looking for leaks the only thing that I have messed with near the ECU was running my second batteries power to the rear of the vehicle I used the grommet thats on the passenger side of the engine compartment but it appears the ECU is still up above that and looks like it has the heater core between it and the grommet. It also hasn't rained at all since it has been acting up and ran fine yesterday after a nice thorough car wash.

Popped the ECU back in, reconnected battery, and it ran with a lot more pep when I first started it up and drove. However as I've driven around 75 miles now I can still feel that same hesitation but not as extreme as when it threw the codes. I'll keep driving it and see if it progressively gets worse over this week.

Will keep you all posted.
 

semlin

curmudgeon
Joined
Mar 27, 2003
Messages
5,357
Location
north of 49
Pulled ECU and looked around it, the thing looks brand new all over and the whole area around it is clean. I did have a windshield replaced but it leaked on the top driver side until they fixed it, other than that the truck is pretty well sealed and no clogged sunroof drains. The only thing slightly suspect was inside the plugs there was some brown liquid but to me it felt oily so I would assume it was factory dielectric grease (let me know if this is a wrong assumption). When you had mentioned looking for leaks the only thing that I have messed with near the ECU was running my second batteries power to the rear of the vehicle I used the grommet thats on the passenger side of the engine compartment but it appears the ECU is still up above that and looks like it has the heater core between it and the grommet. It also hasn't rained at all since it has been acting up and ran fine yesterday after a nice thorough car wash.

Popped the ECU back in, reconnected battery, and it ran with a lot more pep when I first started it up and drove. However as I've driven around 75 miles now I can still feel that same hesitation but not as extreme as when it threw the codes. I'll keep driving it and see if it progressively gets worse over this week.

Will keep you all posted.

the factory dielectric grease in my toyota connectors has always been whitish and grease not a liquid. no idea whether what you describe is normal aging and breakdown. if the metal terminals in the plugs clean and uncorroded i am sure it is fine.

it obviously could be the ecu. but i think rather than throw parts at it i'd try and rule out harness damage first or at least while i am waiting for the spare ecu to arrive.

if you had a water leak on the driver's side maybe have a good look up behind the dash with a flashlight from the foot well for signs of corrosion anywhere and maybe pull the foot well kick panels on both sides and inspect there as well.

you will also want to check the wiring harness condition in the engine bay. double check all your grounds. check the harness condition on top of the motor near the egr valve where it is known to break down due to heat. if you have a problem that shows up when the engine gets warm that is where i'd start. it sounds like you have undone some plugs there lately so maybe look at those closely too and do the fsm tests. i imagine a bad connection or ground on the tps could cause ecu error issues.

i'd also look into (very carefully) cleaning the vaf. do not do that with reviewing threads
 
Joined
Jul 20, 2004
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Chandler, AZ
Know of a couple early '93 rigs that set that code chain. Both have the newer ECU and we had a couple of spares, swapping them makes no difference. Putting the same ECUs into other OBD1 rigs nets no codes, leading us to believe the problem is else ware. Other than that code string, they exhibit no running issues, so at this point they are being ignored.
 
Joined
Nov 20, 2020
Messages
25
Location
San Antonio, TX
Hi All - hopefully bringing this thread back from the dead!

I have a 93 with 180,000 miles and a 60220 ECU that just started throwing 83 84 85 intermittently. Based on this thread and others, the simple and maybe only solution is to buy a 60221 but before I do I have two questions I’m hoping y’all can help me out with:

1) it’s a California truck so I recently jumpered the EGR temp sensor to rid myself of a 71 CEL, which worked, but maybe not so coincidentally, I got the 83, 84 and 85 same day. That said, Land cruiser specialist had my truck a week before and said they had read a few transmission codes but I forgot which codes they mentioned so I’m going to call them Monday to see if they were seeing 83 84 and 85. If they were, that debunks my suspicion that my jumper job may have influenced these codes. Do y’all think the jumper could have contributed to these codes?

2) @cruiserdan my truck was a California truck made in June of 93 and the vin ends in 42896. Based on your comment regarding the dates of ECU, shouldn’t my truck have a 60221? I was surprised to see a 60220. See pics.

thanks for the help!
Josh
CE030012-BA97-498C-A842-E7371A7C5A10.jpeg

BCC98E56-BFC1-469B-AAA7-697C8ABC13B8.jpeg
 
Joined
Nov 20, 2020
Messages
25
Location
San Antonio, TX
There could easily be some leeway during the trasition, or the switchover date in the catalog could be incorrect.
In any event your fix will be a 60221, if you can locate a used one. I know of one but it will not be cheap.
Ok good to know, and thanks for the reply! I will let you know if I go your route for getting the part. Thanks!
 

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