93 300zx n/a knock and vibration

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
nissanfreak12
Posts: 1709
Joined: Sun Jan 23, 2011 4:07 pm
Car: 92 300zx 2+2 TT
Location: Denver, CO

Post

When you got code 43, and then code 55, did you turn the little knob on the ECU again to get the code 55? If so, that reset the ECU so you will get the code 55 until you drive the car again.

Since the first code that came up is 43, you really need to either adjust the TPS or replace. Something is going on there. You can test the TPS with an ohm meter. If it has any dead spots, replace. If you have an auto, you will have a ton of problems with shifting times, unresponsivenes, bucking, poor acceleration, etc... If you have a 5 speed, mainly just poor acceleration.


datsik707
Posts: 57
Joined: Tue Oct 23, 2012 4:02 pm
Car: 1993 300zx N/A 2+0

Post

I have a 5speed. Alright i'll test and see whats up. Any chance it could be the wiring for the tps and not the actual tps?

datsik707
Posts: 57
Joined: Tue Oct 23, 2012 4:02 pm
Car: 1993 300zx N/A 2+0

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Also, could this cause the bogging issue or such?

nissanfreak12
Posts: 1709
Joined: Sun Jan 23, 2011 4:07 pm
Car: 92 300zx 2+2 TT
Location: Denver, CO

Post

Yes, and it could be the wiring as well. Before replacing, always test, otherwise you will be spending a ton of money just replacing, and it may not even fix the issue. It is very possible the TPS is just out of adjustment or just has a dead spot.

datsik707
Posts: 57
Joined: Tue Oct 23, 2012 4:02 pm
Car: 1993 300zx N/A 2+0

Post

Probably going to ebay one for $50, it is the problem btw. So that's that.
On a side note
I think my syncros are going.
Always grinds when going into first,
Bad grind into 4th when shifting fast, if i take my time no grind. Gotta rev match if downshifting for 4th.
Ah, why still am head over heals for my z32 haha

nissanfreak12
Posts: 1709
Joined: Sun Jan 23, 2011 4:07 pm
Car: 92 300zx 2+2 TT
Location: Denver, CO

Post

datsik707 wrote:Probably going to ebay one for $50, it is the problem btw. So that's that.
On a side note
I think my syncros are going.
Always grinds when going into first,
Bad grind into 4th when shifting fast, if i take my time no grind. Gotta rev match if downshifting for 4th.
Ah, why still am head over heals for my z32 haha
Wait till you get the TT one.


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