Winter Chassis Re-fresh

[NSXR Spain]

Hello everyone,

following the post of the friend Wix and for not opening a new one and as I commented in this same post, in the end I decided to clean all the admission of my NSX.

My car has 25 years old, I do not know exactly how the previous owner took care of him, but he knew that inside he was very dirty, and indeed he was very dirty.


he main access had a lot of accumulated fat and dirt, and the injectors, very dirty and rusty they needed a cleaning urgently of all parts







there was so much hollin, that some holes were plugged

[NSXR Spain]

I will continue later with more publications and photos, I can not continue now

[goldnsx]

What kind of airfilter has been used in the past?

[NSXR Spain]

What kind of airfilter has been used in the past?

Hi Goldnsx, now and in the last 30.000 kms the original Oem filter, in the previous 90,000 km I do not know...

these are more the remains of oil and residue in the admission bucket and admission butterflies





also, very dirty one of the filters



when I started to disassemble the injectors, and first of all, just moving them, started to lose gasoline by the top of the injectors, the rubbers are damaged and in poor condition




I am already cleaning everything, changing new joints and I have taken to clean the injectors

I will keep you informed

[goldnsx]

Ups, lucky you, the o-rings of the fuel injectors look to be the first ones. I change mine every 10 years or so. High recommended for anybody out there.

[goldnsx]

Did you try 12 V directly to the comp clutch?

[wixer]

Did you try 12 V directly to the comp clutch?

Not yet, it's on my list of things to do today. I've been studying the Workshop Manual this morning & making a list of things to do & making sure I don't accidentally fry an ECU !

[goldnsx]

Not yet, it's on my list of things to do today. I've been studying the Workshop Manual this morning & making a list of things to do & making sure I don't accidentally fry an ECU !

It would be my first test. I once heard of an A/C stator failure.
Just undo the connector next to the oil stick and apply 12 V to the A/C coil at the compressor and see if it spins. If not you'll need a new stator/clutch unit for the compressor.

[wixer]

It would be my first test. I once heard of an A/C stator failure.
Just undo the connector next to the oil stick and apply 12 V to the A/C coil at the compressor and see if it spins. If not you'll need a new stator/clutch unit for the compressor.

Done this check applied 12V to the compressor & compressor clutch engages, so all would seem good with the compressor.

Still working through the other checks but already seeing some strange results. I have got 12V at the harness end of the compressor red wire intermittently. I thought it was due to the fact I had a jumper wire across the 2 terminals of the Triple Pressure Switch and when I reconnected it to the switch the 12V at the red wire went to 0V. Having repeated the test again with the jumper wire across the Press Switch, I now can't see 12V at the harness end of the compressor red wire..........

Currently checking relays & fuses again but all seems good still, so I'm beginning to suspect either the Cooling fan ECU or the PGM ECU but if one of the temperature sensors is faulty (ambient, interior), maybe they could cause one of the ECU's to switch off the 12V to the compressor......

[wixer]

Having spent nearly all of the day, going through a lot of the procedures in the Workshop Manual numerous times, I can get the Compressor to activate intermittently. I think the issue is with the Cooling Fan ECU as I can occasionally get the Compressor to activate by wiggling its connector. I can try the same thing again & it won't activate the Compressor. The only other thing I've found, is the Ambient Air Temp sensor is out of range of the specified Resistance levels.

Reading this post by Kaz,
http://www.nsxcb.co.uk/entry.php?981...n-Control-Unit
it gives me more confidence in my conclusion.