Airborn456

11 hours ago, joe hurst said:

you could do a compression test,

 

that would be a good indication of engine health, any HG issues would be obvious on the oil filler cap and or in the coolant.

 

if these come out ok, chances are its ''just'' an immobiliser issue, that can be solved as I said before with an ECU kit from a donor car.

 

when the time to track down the problem becomes an insurmountable obstacle or you can't find anything obvious then its sometimes worth throwing a ''speculative'' part at it.

most ECU kits can be sent back with prior arrangement with the vendor.

 

so even if it doesn;t work its diagnostically relevant.

Thank all of you for your help it's all been helpful and I've  had a very generous forums member send me a loaner ecu,dme,keys,ignition so that I can test my boxter so I'll have it in two days I'll let everybody know how it goes,thank you all for your help I'm sure I'll be on here frequently  looking for answers to other issues that arise,talk to you in 2 days thanks

Thank you I will try that,you mentioned if I jumped multiple relays if it started their would be no control on engine and that would be ok at least at that point I would know it runs then I dont mind putting money in the car like I said I'm just wanting to see anything that tells me the motor is good and runs before I spend thousand dollars on it

5 hours ago, Ahsai said:

My posts above were the starting points. There are quite a few more things to check before we even hit the immo.

I have replaced the ignition, can I not jump the starter ,the fuel pump and ignition and start the car that way or will that not work without jumping other relays as well

I've not done much diagnostics dont know where to start to this point I've jumped the starter relay to turn it over to make sure it wasn't locked up ,didn't here any unusual  sounds while it turned over all sounded good

There is no water damage under the seat the car has just over 100,000 miles it doesnt have a scratch on it convertable top us like new even the back plastic window doesnt have a fold or mark on it the interior has a small wear spot on drivers seat other then that interior looks fantastic carpet doesn't appear to have ever been wet any where,it appears like it's been inside most of the time

Thank you for your responses ,I was told by former owner that the key fob does match immobilizer that all components match,that it just quit working after purchasing the car had a dead battery and battery in key fob was dead after replacing both batteries I can manually unlock doors put key in ignition lights all light up but no start I've checked the immobilizer under drivers seat it appears brand new no signs of moisture fuse not blown,I'm not apposed to buying new immobizier components but I'd hate to do that then find out the motor doesnt run I was looking for a way to see if it even runs before I start dumping money in something that doesn't run

Hello all! I'd like to apologize in advance if I'm breaking any rules never been in a forum before! Anyway here the problem I bought a 98 boxster that I'm having immobilizer trouble because I'm not sure if the car even runs or if it's worth trying to get it going I cant get past immobilizer to see if car is worth fixing there has to be a bypass so diagnostic work can be done,I have one key fob it will unlock drivers door but it wont pass the fob issue alarm isn't going off but I turn key and dash lights all come on but no start can anyone help me do I can get to the real issue of if car even runs without spending $1000 before I can even start working on it thank you for any help at all