Replacing engine of 91 3rd Gen prelude with a 88 3rd Gen prelude

3s, humm...... what is that, google shows ZERO for that.
can i know what object shows that? dash, ECU, trans shift.? what?
where are your eyes looking,?
is this the ECU flash code>? LED? at ECU?

"1985-91 Prelude models, there is only one LED display."
ECU code 3 is bad MAP (or bad vacuum to it)

Carb engine or EFI engine./ and which engine?> "options"

here is the FSM , look it up , gen 2 to 5
http://hondatech.info/downloads/Auto/Manuals/Prelude/

they have, many engines. (hey honey in garage what engine?)
you failed so say which one.
the FSM covers this, as does alldata.com or mitchels.
this is GEN 5 prelude.
check out wiki on gen 5, see all them engines?
and there are over 80 markets, you in USA orJAPAN? where.
check out sub models,
http://en.wikipedia.org/wiki/Honda_Prelude

here is a free FSM. no guarantees. its free.
gen 5, RTM.
http://hondatech.info/downloads/Auto/Manuals/Prelude/Prelude%205/



or alldata.com

goto walmart and get wynn's signature engine tuneup(8$) and put in your engine and run for 100 kms then have a oil change see the difference.

You need the Honda B20A engine, it was used on their vehicles from 88-91 Preludes. You can get them on ebay several other places online. You can get them shipped to you in Australia. Good luck to you

You need to check the tcm for codes too. The s3 light is like the check engine light for the tcm. The VSS code might be your problem.

6
Accord Civic CRV CRX Del Sol Odyssey Prelude
85-98 86-98 97-98 85-91 93-97 95-98 85-98 ECT Sensor (Engine Coolant Temperature)
defective circuit or unplugged / defective sensor
10
Accord Civic CRV CRX Del Sol Odyssey Prelude
85-98 86-98 97-98 85-91 93-97 95-98 85-98 IAT Sensor (Intake Air Temperature)
defective circuit or unplugged / defective sensor
16
Accord Civic CRV CRX Del Sol Odyssey Prelude
90-95 88-95 n/a 88-91 93-95 95 88-95 Fuel Injector System
defective circuit or unplugged / defective fuel injector

check your wiring for dirty connections or broken wires, you may have wires that are rubbed through or connectors that are not making full contact. you will need an ohm meter and check wires for continuity. a wiring diagram will be needed.

You can download the entire manual from www.pdftown.com
Here is the link to the shop manual for the 88 prelude that I used to do my Cam Belt.
http://pdftown.com/Honda-Prelude-1988-Service-Manual.html
Hope this helps...

Intake valve clearance 0.15mm-0.19mm (6-7 thou); Exhaust clearance 0.17mm-0.21mm (7-8 thou). All measurments COLD engine. 2.2 VTEC Prelude engine 1992-1996, import and UK.

you should be able to call the honda dealer and give them the VIN# to the car and they should be able to pull it up for you.

I am having the same problem; I cannot find a 93 Prelude sunroof. But the answer is no you can't use any other year of sunroof on ours. Just about everything else but the roof will fit. Hope this helped.