Question about 1986 Honda Prelude

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PGM FI light is on now the car wont start

Ever since the PGM FI light came on on my 1987 Honda Prelude the car began to act weird. I would start the car up and it would idle fine but when i would put it in gear and try to give it gas it would hesitate like its not taking any gas and now its gotten to the point to where it doesnt event wont to start

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Thats a program fuel injection light! so there is a problem with the fuel injection system.
Here you can get the service manuals to get you through this problem :)
http://www.pauldesign.ru/honda/shopmanual.html
and
http://honda.roadpwnage.com/manuals/pages/usdm-accord-1989-full.php

Kind regards


Posted on Dec 02, 2008

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I have a 1986 Honda Prelude SI and the warning light comes on for PGM-FI but the car still drives fine.The code on the ECU displaying 7 then 12 blinks.But they are short blinks with know pauses?

Posted on Feb 06, 2009

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Prelude models, there is only one LED display. The LED will blink to indicate the trouble code. The ECU is located on 1985-87 Preludes, it is in the left side trim panel beside the rear seat.Codes 1 through 9 are indicated by a series of short flashes; two-digit codes use a long flash for the first digit followed by the appropriate number of short flashes. For example, Code 14 would be indicated by 1 long flash followed by 4 short flashes. Codes are separated by a pause between displays. Multiple codes are transmitted in an alternating pattern. For example, a code 3 and 14 would be displayed as 3 short flashes (for Code 3) followed by the separator pause, then 1 long flash and 4 short flashes (for Code 14)..

Please mention the code ,to trouble shoot further..

Good luck...

Posted on Dec 02, 2008

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Posted on Jan 02, 2017

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1 Answer

Honda h22 5 speed


stalls. ( ever tune it up,at the 60k service points? )
what year, no year , no joy, 1978 to 2001 , lots huh?

and what engine option, displacement (size)

over 10 engines
Third-generation Honda Prelude engines:
B20A/B20A1 - 2.0L DOHC PGM-FI 143/160 hp (Japan/Europe)
B20A3 - 2.0L SOHC 12v carb 104 hp North America
B20A4 - 2.0L SOHC 12v carb Global, except North America
B20A5 - 2.0L DOHC PGM-FI 135 hp (101 kW) North America
B20A6 - 2.0L DOHC PGM-FI 142 hp (106 kW) Oceania
B20A7 - 2.0L DOHC PGM-FI 150 hp (110 kW) Europe
B20A8 - 2.0L DOHC PGM-FI 133 hp (99 kW) Europe
B20A9 - 2.0L DOHC PGM-FI 140 hp (100 kW) Europe
B21A - 2.1L DOHC PGM-FI 145 hp (108 kW) Japan (SI States)
B21A1 - 2.1L DOHC PGM-FI 140 hp (100 kW) North America

Jan 11, 2014 | Honda Prelude Cars & Trucks

1 Answer

1987 Honda prelude dash lights Pgm-fi coming on


pedal pressure? the throttle sticks< OPEN?
ive never ever seen a post ever for pedal pressure,
what does that mean? im clueless here, and sounds very scary.
to any mech. after all, throttle valves failures, can be man killers.
so.....???
when failed does the engine crank over full speed with the starter?
grrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr fail to start.
that normal sound of a good starter, yes?

is this an intermittent problem only?

NO start, ? (cranks robustly)
no, lets start at step one.
1: check all fuses. in both fuse boxes.
2: are the Headlamps working at full brightness.
3: does all the normal dash cluster lamps glow , key on.
Charge, Brake , Check engine lamp> all glow, if not, stop.
4: spark got spark at all cylinders, (a test)
my guess is engine is flooding, (smells) and is due to
lost spark.
ever do the 60k mile tuneup this decade?


this very old car has relic, warnings, back then.
non standard.

the PGM-FI is early name for CEL, check engine
on this engine you must find the ECU (PGM-FI box)
and see the LEDs on the side.
they can be made to blink secret codes. errrors
these errors will be key to diagnosis, i bet.

here is the clue
http://www.cargurus.com/Cars/Discussion-c9084_ds477362

the cars FSM book covers how to diagnose no starts
or no cranks.

Jun 27, 2013 | 1987 Honda Prelude

1 Answer

86 prelude 2.o SI has no spatk and no PGM-FI light. how do I test the circut for that light


if you have changed the distributor cap,rotor button,spark plug wires and plugs and you still dont have fire then its most likely your distributor.first check the fuses or relays if you have replaced those items.

Dec 10, 2012 | 1986 Honda Prelude

1 Answer

Fuse for fuel pump cant find


pull the PGM-FI relay located to the left of the steering wheel way up under the dash.

May 23, 2009 | 1995 Honda Prelude

1 Answer

I changed the main fuel relay on my 1992 prelude because it would not start. the fuel pump does not come on at 2nd position of ignition for two seconds nor does the check engine light come on and go off....


Look for 'EFI Main Relay (PGM-FI Main Relay)' section about half-way down the following page: http://www.tegger.com/hondafaq/startproblems.html#mainrelay

Apr 01, 2009 | 1992 Honda Prelude

1 Answer

Malfunction indicator light pgm/fi. What does it mean?


firstly throw the haynes manual out the window as they are not evan written by a motor engineer of city and guilds,but by a so called mechanical engineer ...big difference ,these **** went to uni and spent all there time on the ****,ever read a haynes manual ???its a copy of the manufacturers one ,these authors have never got their hands dirty,i went to uni so the world owes me a living type of snobs . try changing the air flow meter

Sep 27, 2008 | 1987 Honda Accord

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