As well as rodent damage. Check and recheck all wiring.the jeep hasn't turned a wheel for 7years because of illness so l will check starter and wiring it could be full of muck which earth wire should l look for please.
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As well as rodent damage. Check and recheck all wiring.the jeep hasn't turned a wheel for 7years because of illness so l will check starter and wiring it could be full of muck which earth wire should l look for please.
Thanks lm going to remove starter and check that and earths first see how that goes fingers crossed !!!The ECU I ordered from Flagship One left me in the same situation as you John. Sent it back. You are better ordering with @Wranglerfix. It was a more expensive unit but it arrived quickly and he's a pleasure to deal with. Got my 98 TJ going again and I even might have a few more horses to boot. Hope you get sorted.
HA HA yea, its been on a trickle charger reconditioned and its on a dry cell battery in a dry garage , it does start its just not with the key .As well as rodent damage. Heck snd recheck all wiring.
There isn't any power getting to the starter motor from the key has anyone any ideas please ?the jeep hasn't turned a wheel for 7years because of illness so l will check starter and wiring it could be full of muck which earth wire should l look for please.
HiRight guys,
I am aware that the 1997 Wranglers in the UK have a certain immobiliser installed that is not the SKIM system installed into the 98 onwards models.
I am also aware that these May & Scofield units have problems, I unfortunately had the issue where the immobiliser would not deactivate using the key fob and the jeep was basically dead.
FEAR NO MORE! I HAVE THE ANSWER!
After lots of research I figured out a way to bypass and remove the unit eliminating the dreaded May & Scofield unit.
You are going to need a new reprogrammed ECU, I found a company called Flagship One based in NYC who sent me out a new ECU for £220 including postage. As far as I'm aware this is the cheapest I could find, they took my VIN number and basic info of the Keep gave me the quote called me up for payment and then it was just a case of me waiting for it to arrive.
Before you get all excited and throw your new ECU in there is something you need to do first, remove the immobiliser, this is located behind the guage cluster (you might have noticed thats where the click comes from when deactivating the immobiliser)
If you dont do this you risk the chance of it locking your new ECU out and you're back to square one..
To remove this is pretty simple here are the steps
1. Remove the 'knee plate' under the steering wheel. 2 screws hold this on
2. remove the long defrost panel
3. One this is done you will be able to access the screws for the plastic bezel surrounding the guage cluster. 2 on the bottom and 3 on the back near the windshield.
4. One this i removed you will be able to see the 4 screws holding the guage cluster to the dash, once you remove these the cluster pulls right out.
5. Now this is where it get interesting. You will see a blank metal plate. You will need to either try get behind where the studs are with your fingers and remove the nuts OR just drill the studs out.
6. Once you do this the plate will come away and you will see the black immobiliser attached to the back of said plate! Unplug this and (preferably) have a bonfire with it!
Now you are ready to install your new ECU
BE AWARE IF YOU REMOVE THE UNIT BEFORE YOUR NEW ECU ARRIVES YOUR JEEP WILL BE DEAD
The ecu is located behind the battery.. pretty simple to swap out just remove the battery take off the cover remove the 3 big clips, 4 screws and it comes away very easy.
I hope this helps anyone who needs it as it took me alot of work to figure all this out and put it into practice
Hi,Right guys,
I am aware that the 1997 Wranglers in the UK have a certain immobiliser installed that is not the SKIM system installed into the 98 onwards models.
I am also aware that these May & Scofield units have problems, I unfortunately had the issue where the immobiliser would not deactivate using the key fob and the jeep was basically dead.
FEAR NO MORE! I HAVE THE ANSWER!
After lots of research I figured out a way to bypass and remove the unit eliminating the dreaded May & Scofield unit.
You are going to need a new reprogrammed ECU, I found a company called Flagship One based in NYC who sent me out a new ECU for £220 including postage. As far as I'm aware this is the cheapest I could find, they took my VIN number and basic info of the Keep gave me the quote called me up for payment and then it was just a case of me waiting for it to arrive.
Before you get all excited and throw your new ECU in there is something you need to do first, remove the immobiliser, this is located behind the guage cluster (you might have noticed thats where the click comes from when deactivating the immobiliser)
If you dont do this you risk the chance of it locking your new ECU out and you're back to square one..
To remove this is pretty simple here are the steps
1. Remove the 'knee plate' under the steering wheel. 2 screws hold this on
2. remove the long defrost panel
3. One this is done you will be able to access the screws for the plastic bezel surrounding the guage cluster. 2 on the bottom and 3 on the back near the windshield.
4. One this i removed you will be able to see the 4 screws holding the guage cluster to the dash, once you remove these the cluster pulls right out.
5. Now this is where it get interesting. You will see a blank metal plate. You will need to either try get behind where the studs are with your fingers and remove the nuts OR just drill the studs out.
6. Once you do this the plate will come away and you will see the black immobiliser attached to the back of said plate! Unplug this and (preferably) have a bonfire with it!
Now you are ready to install your new ECU
BE AWARE IF YOU REMOVE THE UNIT BEFORE YOUR NEW ECU ARRIVES YOUR JEEP WILL BE DEAD
The ecu is located behind the battery.. pretty simple to swap out just remove the battery take off the cover remove the 3 big clips, 4 screws and it comes away very easy.
I hope this helps anyone who needs it as it took me alot of work to figure all this out and put it into practice
Hi, my auto electrician showed me your solution for the May and Scofield immobiliser problem, we followed your advice and have removed the immobiliser and taken out the ECU. Today I contacted Flagship One but when I asked them if the replacement would work without the immobiliser no one could give me a straight yes or no. Don’t want to order it if it won’t work. Can you give me any more help, it would be much appreciated. John Ritchie. ( [email protected] ) 07899 962605.Right guys,
I am aware that the 1997 Wranglers in the UK have a certain immobiliser installed that is not the SKIM system installed into the 98 onwards models.
I am also aware that these May & Scofield units have problems, I unfortunately had the issue where the immobiliser would not deactivate using the key fob and the jeep was basically dead.
FEAR NO MORE! I HAVE THE ANSWER!
After lots of research I figured out a way to bypass and remove the unit eliminating the dreaded May & Scofield unit.
You are going to need a new reprogrammed ECU, I found a company called Flagship One based in NYC who sent me out a new ECU for £220 including postage. As far as I'm aware this is the cheapest I could find, they took my VIN number and basic info of the Keep gave me the quote called me up for payment and then it was just a case of me waiting for it to arrive.
Before you get all excited and throw your new ECU in there is something you need to do first, remove the immobiliser, this is located behind the guage cluster (you might have noticed thats where the click comes from when deactivating the immobiliser)
If you dont do this you risk the chance of it locking your new ECU out and you're back to square one..
To remove this is pretty simple here are the steps
1. Remove the 'knee plate' under the steering wheel. 2 screws hold this on
2. remove the long defrost panel
3. One this is done you will be able to access the screws for the plastic bezel surrounding the guage cluster. 2 on the bottom and 3 on the back near the windshield.
4. One this i removed you will be able to see the 4 screws holding the guage cluster to the dash, once you remove these the cluster pulls right out.
5. Now this is where it get interesting. You will see a blank metal plate. You will need to either try get behind where the studs are with your fingers and remove the nuts OR just drill the studs out.
6. Once you do this the plate will come away and you will see the black immobiliser attached to the back of said plate! Unplug this and (preferably) have a bonfire with it!
Now you are ready to install your new ECU
BE AWARE IF YOU REMOVE THE UNIT BEFORE YOUR NEW ECU ARRIVES YOUR JEEP WILL BE DEAD
The ecu is located behind the battery.. pretty simple to swap out just remove the battery take off the cover remove the 3 big clips, 4 screws and it comes away very easy.
I hope this helps anyone who needs it as it took me alot of work to figure all this out and put it into practice
Hi, my auto electrician showed me your solution for the May and Scofield immobiliser problem, we followed your advice and have removed the immobiliser and taken out the ECU. Today I contacted Flagship One but when I asked them if the replacement would work without the immobiliser no one could give me a straight yes or no. Don’t want to order it if it won’t work. Can you give me any more help, it would be much appreciated. John Ritchie. ( [email protected] ) 07899 962605.
Sorry to bring this thread back to the top. But I've used this as a source to remove the immobiliser from my 97 UK TJ Wrangler, it was being temperamental.
With the great support of @Wranglerfix I've successfully installed the new PCM, as well as removing the immobiliser, not had the bonfire yet, from behind the dashboard, draining power in-between. But.... I still seem to have an issue with the jeep not starting on a key.
Current Behaviour
- When I turn the key the fan and stereo switch off, engine doesn't turn over.
- With the ignition on, I can short the starter motor and the engine starts quickly and runs fine as ever
- If I quickly plug the old PCM in and try to start the engine by shorting the starter, engine turns over but doesn't fire up. Suggesting new PCM works!
So what's been done to date;
1. Removed immobiliser, drained power and installed new WranglerFix PCM - DONE
2. Installed new relay - DONE
3. Engine can start by shorting the starter..
Any thoughts? My currently thinking of getting an engine starter button kit to use as a way to short the starter, as this does seem to work...
Speaking with @Wranglerfix we think there's some other gremlin in the fix... thanks for any help or views...
Update: After cleaning up the gunk from the connectors and re-assembling everything, I can now hear the solenoid clicking inside the Schofield unit when I press the lock/unlock button on the key fob - however, the light on the dash is now solid red and the car shuts off 1 sec after starting... Any ideas??? Have I somehow bricked the ECU??? I've tried ringing Schofield and they said one of their engineers will call me back...
Ken, I concur with Charles. I got my TJ going again and the old unit had been removed for a month or two before new one arrived. Remove immobiliser and skim before installing new ECU. I'm in Ireland also ken so if you need assistance just ask.