PCM replacement?

[jcbarr]

I've heard PCMs are hard to find these days. I've got a 1998 4.0L. Codes showing #5 cylinder problem (P0205) even after I replaced injector, switched it to see if it's defective, and replaced connector. The injector is not clicking. So I'm thinking it's the PCM.

One mechanic told me those are too difficult to find today. True? Any recommended brands?

Thanks

 

[Chris]

They aren’t difficult to find if you talk to the one and only, @Wranglerfix

https://WranglerFix.com

 

[Wranglerfix]

@jcbarr We can repair that issue and save you some money on replacing yours.

Call me tomorrow at 866-888-7710 whenever you get a chance.

Thanks,

Mark

 

[AndyG]

I would not even consider talking to anybody but Mark and his crew- These are just not another product in their line - it is what they do. They are specialists, and they know how to do business.

 

[ItchyDong]

You need to check to make sure the PCM controlled ground isn't shorted to ground before you throw a PCM at it (VERY COMMON). Otherwise you're just chucking parts and shooting in the dark. There are a few ways to skin this cat. But I believe this is the quickest way.

With an INCANDECENT test light connected to Battery Negative: With Key On/Engine Off, Unplug #5 injector. Gently touch Pin 1 (Orange/Dark Green Tracer). Test light should light.

With Key On/Engine Off, Switch Test light to Battery Positive. Gently touch Pin 2 (Pink/Black Tracer). Test light SHOULD NOT light.

If the test light illuminates by touching Pin 2 connected to battery positive with the key on/engine off, it can mean a couple of things. Most likely is that the control wire (injector ground) running back to the PCM is shorted to a permanent ground which means you're constantly dumping fuel into the cylinder because it's firing all the time. Most of the time the short is located behind the valve cover where the fuel injector wiring runs back to the PCM.

OR, it could mean that the driver for the #5 injector inside the PCM is shorted to ground (less likely but possible.)


If the test light doesn't illuminate by touching pin 2 while connected to battery positive, then you need to check PCM control by installing a Noid light with the engine running. It should flash. If the noid light doesn't flash, you need to run continuity from Pin 2 to PCM to verify the control wire isn't broken. If wire integrity is good, THEN you need a PCM.

 

[TJ Jimmy]

Hey everyone i have an 03 Tj sport auto and she is fighting me . Not sure what the issue is right yet . I put her in the ditch a month ago and now she is having some kind of electrical issue of some sort. Dash cluster drop off and it's triggered the skim Imobiliser system she did it to me first at gas pumps a week after the ditch . Start 2 seconds then shut down .happened 4 times in a row the 5th time she kept running but the key with circle and line threw was still lit up . Dash cluster would work for a few seconds then drop off . I've peeled into the wire harnesses that run next to battery along fender to look for breaks looks really clean behind dash cluster wires look great . Now I am looking to see how hard it is to get pcm replacement or rebuild I'm not sure what is best option . @Wranglerfix I'm wondering if I may call you at some point see what the deal on the pcm is I love her and she's my only wheels . 03 Tj sport 4.0 190k km I'm in Canada as well northern Ontario thanks in advance

 

[JMT]

Hey everyone i have an 03 Tj sport auto and she is fighting me . Not sure what the issue is right yet . I put her in the ditch a month ago and now she is having some kind of electrical issue of some sort. Dash cluster drop off and it's triggered the skim Imobiliser system she did it to me first at gas pumps a week after the ditch . Start 2 seconds then shut down .happened 4 times in a row the 5th time she kept running but the key with circle and line threw was still lit up . Dash cluster would work for a few seconds then drop off . I've peeled into the wire harnesses that run next to battery along fender to look for breaks looks really clean behind dash cluster wires look great . Now I am looking to see how hard it is to get pcm replacement or rebuild I'm not sure what is best option . Wranglerfix I'm wondering if I may call you at some point see what the deal on the pcm is I love her and she's my only wheels . 03 Tj sport 4.0 190k km I'm in Canada as well northern Ontario thanks in advance

You need to tag Mark like this @Wranglerfix , but I’m not sure he’s on here too much. I’d go to his website and try to sort it out that way.

https://wranglerfix.com/product/jeep-wrangler-tj-replacement-pcms/

 

[TJ Jimmy]

You need to tag Mark like this @Wranglerfix , but I’m not sure he’s on here too much. I’d go to his website and try to sort it out that way.

https://wranglerfix.com/product/jeep-wrangler-tj-replacement-pcms/

Ehh thank JMT

 

[Jerry Bransford]

Ehh thank JMT

@Mark cantrell is great to deal with, give him a call. He's a true guru of the TJ PCMs and even has a fleet of TJs to test incoming and outgoing repaired PCMs on. His phone # is on www.wranglerfix.com

 

[Wranglerfix]

Call me when you get a chance, aye and I’m sorry that Castro’s kid ruined your country!

 

[wesley697]

You need to check to make sure the PCM controlled ground isn't shorted to ground before you throw a PCM at it (VERY COMMON). Otherwise you're just chucking parts and shooting in the dark. There are a few ways to skin this cat. But I believe this is the quickest way.

With an INCANDECENT test light connected to Battery Negative: With Key On/Engine Off, Unplug #5 injector. Gently touch Pin 1 (Orange/Dark Green Tracer). Test light should light.

With Key On/Engine Off, Switch Test light to Battery Positive. Gently touch Pin 2 (Pink/Black Tracer). Test light SHOULD NOT light.

If the test light illuminates by touching Pin 2 connected to battery positive with the key on/engine off, it can mean a couple of things. Most likely is that the control wire (injector ground) running back to the PCM is shorted to a permanent ground which means you're constantly dumping fuel into the cylinder because it's firing all the time. Most of the time the short is located behind the valve cover where the fuel injector wiring runs back to the PCM.

OR, it could mean that the driver for the #5 injector inside the PCM is shorted to ground (less likely but possible.)


If the test light doesn't illuminate by touching pin 2 while connected to battery positive, then you need to check PCM control by installing a Noid light with the engine running. It should flash. If the noid light doesn't flash, you need to run continuity from Pin 2 to PCM to verify the control wire isn't broken. If wire integrity is good, THEN you need a PCM.

With this beins said if I'm getting ground on pin 1 then what's going on here I'm lost been fighting this for a month now.

 

[ItchyDong]

Then your power feed is shorted to ground and your fuse must keep blowing.

You’re going to need to be more specific with your year and symptoms if you want my help. “Been dealing with it for a month” doesn’t cut it. Been dealing with… what? Start a new thread.

 

[wesley697]

You need to check to make sure the PCM controlled ground isn't shorted to ground before you throw a PCM at it (VERY COMMON). Otherwise you're just chucking parts and shooting in the dark. There are a few ways to skin this cat. But I believe this is the quickest way.

With an INCANDECENT test light connected to Battery Negative: With Key On/Engine Off, Unplug #5 injector. Gently touch Pin 1 (Orange/Dark Green Tracer). Test light should light.

With Key On/Engine Off, Switch Test light to Battery Positive. Gently touch Pin 2 (Pink/Black Tracer). Test light SHOULD NOT light.

If the test light illuminates by touching Pin 2 connected to battery positive with the key on/engine off, it can mean a couple of things. Most likely is that the control wire (injector ground) running back to the PCM is shorted to a permanent ground which means you're constantly dumping fuel into the cylinder because it's firing all the time. Most of the time the short is located behind the valve cover where the fuel injector wiring runs back to the PCM.

OR, it could mean that the driver for the #5 injector inside the PCM is shorted to ground (less likely but possible.)


If the test light doesn't illuminate by touching pin 2 while connected to battery positive, then you need to check PCM control by installing a Noid light with the engine running. It should flash. If the noid light doesn't flash, you need to run continuity from Pin 2 to PCM to verify the control wire isn't broken. If wire integrity is good, THEN you need a PCM.

With this beins said if I'm getting ground on pin 1 then what's going on here I'm lost been fighting this for a month now.

Then your power feed is shorted to ground and your fuse must keep blowing.

You’re going to need to be more specific with your year and symptoms if you want my help. “Been dealing with it for a month” doesn’t cut it. Been dealing with… what? Start a new thread.

Then your power feed is shorted to ground and your fuse must keep blowing.

You’re going to need to be more specific with your year and symptoms if you want my help. “Been dealing with it for a month” doesn’t cut it. Been dealing with… what? Start a new thread.

I made a new thread hopefully in the right spot

 

[Myrrick walby]

I have a 06 jeep tj and I’m having pcm issues I have been looking for one the last few week and have come across this one from ALL COMPUTER. Has one got one from them and are they reliable?

 

[macleanflood]

I have a 06 jeep tj and I’m having pcm issues I have been looking for one the last few week and have come across this one from ALL COMPUTER. Has one got one from them and are they reliable?

Wranglerfix.com

Mark will fix you up!

@Wranglerfix

-Mac

 

[Myrrick walby]

Wranglerfix.com

Mark will fix you up!

@Wranglerfix

-Mac

I have already talked to mark and the pcm from him is $649.20 and the one from all computer is only $350. I know cheaper is not always better. I just wanted to see if anyone has gotten one from all computer and if it works.

 

[Wranglerfix]

Here is why you want to avoid the OEM part.

You can call me to discuss some further detail if you would like.

 

[Wranglerfix]

I have already talked to mark and the pcm from him is $649.20 and the one from all computer is only $350. I know cheaper is not always better. I just wanted to see if anyone has gotten one from all computer and if it works.

You’re swapping fleas for ticks with the OEM part.

 

[Myrrick walby]

You’re swapping fleas for ticks with the

well, sounds like that is that I’ll be going with you. I’ll give you a call here in a week or so and try to set up one.

 

[Wranglerfix]

We are here when you need us!

Thanks,

Mark