When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Well, now that we're talking about going to the mechanic to reprogram the throtte body, maybe I should have told you all from the beginning. It all started with the battery light turning on in the dash. Check the car's alternator with the engine running and the multimeter read less than 11 volts, therefore following the instructions in the three attached videos, I removed the intake manifold, changed the alternator for a new one, cleaned the throttle body, cleaned the MAF and reinstall everything again. In the video, it is indicated that if the circular part of the throttle body is not pushed, it does not have to be reprogrammed. I followed all the instructions step by step, but apparently the DIY that I did was not perfect, because now I have to take my car to reprogram. As for the new alternator I installed, how much should the multimeter read now? I took the reading with the multimeter today and it gave me 13.98 volts. Is that a good reading for a new alternator? (The battery light on the dash, went off after installing the new alternator, only the check engine light remains on, which I imagine has to do with the failure in the throttle body) As always, I thank you for any advice you can. give me.
I know it's a PIA, but after reading this, are you certain you were able to reinstall the throttle body correctly and complete all the necessary connections? Second thought, even though the engines are Volvo, LR may have changed the programming to have the TB married to the ECU/BCU regardless. IDK, just a thought. And, yes, depending on outside temp, 14 volts is fine.
Hi again!
Well, I understand that perhaps installing a new throttle body, with its rubber gasket, is not that difficult, but reprogramming, it is something else. From what I have learned from you, the first thing, is that i need to have the SSD system and know how to use it. And I acknowledge that I do not have the technical preparation to do that job. Uff! The same motor is in a Volvo and land rover, but do not married with the ECU in the same manner! It is sure that I have to take my truck to the mechanic.
I just wanted to be sure that the fault is in the throttle body and not elsewhere. From what I see, once the throttle body is disconnected, to clean it, it must be reprogrammed and married to the BCU / ECU, when it is reconnected again. Is this correct?
Thanks!!
Hi again!
Well, I understand that perhaps installing a new throttle body, with its rubber gasket, is not that difficult, but reprogramming, it is something else. From what I have learned from you, the first thing, is that i need to have the SSD system and know how to use it. And I acknowledge that I do not have the technical preparation to do that job. Uff! The same motor is in a Volvo and land rover, but do not married with the ECU in the same manner! It is sure that I have to take my truck to the mechanic.
I just wanted to be sure that the fault is in the throttle body and not elsewhere. From what I see, once the throttle body is disconnected, to clean it, it must be reprogrammed and married to the BCU / ECU, when it is reconnected again. Is this correct?
Thanks!!
No. You can remove and reinstall the same (already married) throttle body without having to use software to re-register it. It is already registered in the system. The only time you should need to marry the throttle body is with a new or used replacement. That's why I asked if you are sure you reinstalled everything correctly. Mine has been removed twice, once to change the thermostat and once to replace the rad fan shroud to a dual fan shroud.
No. You can remove and reinstall the same (already married) throttle body without having to use software to re-register it. It is already registered in the system. The only time you should need to marry the throttle body is with a new or used replacement. That's why I asked if you are sure you reinstalled everything correctly. Mine has been removed twice, once to change the thermostat and once to replace the rad fan shroud to a dual fan shroud.
...and don't touch the internals of the throttle body. Just remove, check, clean and reinstall.
Yes, i think you are right. Apparently yes, I made a mistake in cleaning the throttle body, or when reinstalling it. But if you will allow me, I want to ask something else, in reference to the cleaning method. I want to know if I clean the throttle body well, because in some you tube videos, I observed that people turn by hand, the internal circular piece of the throttle body for cleaning it and I did not dare to do it. Should I rotate it, for a better cleaning? To illustrate my question, I am attaching 4 photos, the first two are from the recently uninstalled throttle body. The other two are after cleaning. Please, watch them and tell me what you think, because i know the cleaning can be better.
Thanks!
Pic#1 before cleaning Pic#2 before cleaning Pic#3 after cleaning Pic#4 after cleaning
My gut feeling is that all that corrosion and residue probably means the motor is giving up the ghost. I'm surprised at how dirty and rusty it was. In what part of the country do you live?
I live in Puerto Rico, which is an island in the Caribbean Sea. We have a tropical climate all year round. Much heat and humidity.
I am also from Puerto Rico, though I live in the mainland now. In that case I strongly advise you to change the throttle body, and try to get in the habit of using anti-corrosion sprays on any surface of your car susceptible to corrosion. I spray my entire engine, EVERYTHING in the engine compartment, with WD-40 every 3 months or so, especially in the winter when the roads are full of salt. I also try to spray the undercarriage as much as possible. Most people don't understand WD-40 is not a lubricant, it is a "water displacement" formula intended to protect whatever it is sprayed on for corrosion. If that car has lived all its life in PR then it might have other problems related to salt water spray corrosion. You really have to be proactive to protect your car from that.
Humidity gets to these cars, all the guys on the Brit forum complain constantly about rust and electrical gremlins while I've never had either... in SOCAL.
Hopefully the engine oil film keeps everything downsteam of your TB nice and shiny.
Oh! nice to meet you, flybd5. And yes, I'm going to take the Lr to the mechanic to replace the throttle body and program it. I just hope not to take it to the dealer, it is very expensive. I'm also going to buy a couple of cans of w40, to protect the parts of the engine that are exposed to the environment. Flybd5, many thanks to you and ThorInc and Merlinj79. Thank you all for taking from your time and answering my questions. Your advice and recommendations are of great help to me. Have a nice day!
