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1989 Civic DX hatch 5spd manual. Car has 202000 miles, however the engine is a 92-95 Civic VX vtec-e series with less than 60,000 miles. Car is driven nearly every day and is averaging 37 mpg now but can probably be better. The engine is currently running a 4 wire 02 sensor and a P65 ecu...

Got this from NGK Yellow: Heater Ground (-) Orange: Heater Power (+) Black: Common Ground ( for IP and Vs ) White: IP circuit (Current pumping) (+) Red: Vs reference (+) Now, could anyone guide...

Trying to find out what the 5 wires on the L1H1 NTK O2 sensor are for, such as which ones are heaters, etc. The colors on my sensor are: White Yellow Orange Red Black This was an engine swap, from obdo to obd1, with a conversion harness and now I need to get the O2 connected to a PO7 ecu which...

First, I know there are several posts on this topic, however almost everyone has different opinions and unfortunately people do not post when they've found the solution. 89 DX to 92 VX using obd0_obd1 conversion harness, P07 ecu and NTK L1H1 five wire o2. My chassis has these wires from old...

Scenario: 89 civic dx hatch with a jdm d15bz1 (vx equiv.) It is currently running with a P28 ecu and 4 wire o2 sensor, no egr system connected. When I first got it together the ecu I had was bad, could not find another so used a P28 and the 4 wire. It runs good but only gets 39 mpg...

Don't think its the battery, it will not jump start either. It will push start in about 4 feet though!

89 Civic 5 spd manual Turn the key, all guages, radio, etc. power on.Try to start, nothing seems to engage the starter. I hear a relay clicking under the driver's side dash. I thought it may be the clutch switch. I can press the switch manually with my finger and turn the key, that relay will...

I want to get a gauge cluster with a tach for my 89 dx 5 spd standard. Which clusters can I get that will make this the easiest possible...by easy I mean pull one out and plug one in with no modificiations?

I wanted power locks and windows added to my 89 dx hatch. Would it be easier to add after market parts for this, or could I more easily swap the doors off another car that already has power windows/locks? Which would be the easiest, and if I can swap doors, which models/years would be...

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I am placing a d15z1 (vx) engine in my 90 DX hatch. I have access to a CRX HF tranny, '91 I believe. Will I be able to use the clutch, linkage, torque converter, etc. from my DX , or will I need to get this from another car?

I need the egr control box for my vx (with all the goodies inside of course) Please let me know if you or a friend has one, or perhaps a place online to look. Thanks

I am placing a d15z1 in my 89 dx. I was pondering changing the dx tranny for the cx/vx that actually belongs to this engine, but they hard to come by for a decent price. I have access to a crx hf tranny, i do not know which one it is though. Would my dx tranny run the rpm's too high if I just...

Sounds great but.......most of the dpfi to mpfi wiring instructions I've seen online involve using a resistor box and taking wires of the A pinset and attaching to resistor. See link here https://hondaswap.com/swap-articles/dpfi-mpfi-writeup-49557/ Do I need to do everything else but this step...

Here it is, really, really, dumb ass question, brace yourself: I have a d15z1 (vx engine) complete with almost the entire engine bay harness, the p07 ecu, an obd0 to obd1 conversion harness, and an mpfi fuel injector resistor box, going into 89 dx. The question is, other than wiring the...

I am placing a 92 VX in an 89 DX. I have most of the things needed, i.e. harness, ecu, etc. but I am looking at o2 sensors for the VX and boy do I get some different prices. I have seen some without connectors for as low as 50 bucks and others that go as high as 400! My question to the forum...

I have a d15z1 engine and I am having a hard time finding decent quality hb's, either dx, cx or vx models. My question to the forum would be to rank the following options in regards to fuel effieciency and ease of the swap. By ease of the swap, I mean will I need extra stuff like mounts, wire...