Question about 1986 Honda Prelude

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

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  • 17 Answers

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.

Posted on Dec 10, 2012

  • Lee Cook Dec 10, 2012

    I have checked fuses and relays,replaced ECU,igniter and All three sensors in dist check at very near 750 ohms

  • Lee Cook Dec 10, 2012

    I also checked main relay and grounds to ECU

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Posted on Jan 02, 2017

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alicantecoli
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SOURCE: 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

Posted on Nov 09, 2008

  • 3 Answers

SOURCE: 86 honda prelude si 2.0 dies, won't restart

hey sounds to me like it's the alternator see when the alternator is not working properly the main source of direct energy comes from the battery and when that runs out it makes your car die . then it might turn on again but it does not last. u shuld have you alternator checked to make sure if not ask me again..

Posted on Dec 27, 2008

  • 449 Answers

SOURCE: 1988 honda prelude won't start

change the sensor

Posted on Feb 06, 2009

  • 563 Answers

SOURCE: i have an 86 prelude si and it keeps blowing 10

Sounds like you have bad circuit somewhere.
Open the hood and clean up some ground wires.

Posted on Oct 29, 2009

SOURCE: TOWING WITH CAR TODAY 2 MESS CAME ON DASHBOARD

Hi Ian,
Take the vehicle and have a scan carried out. It sounds as if the transmission over heated and maybe there could be a problem with the lighting system of the trailer. A scan will tell you the problem areas and what needs attending to.
How about a rating?
Regards Johngee10

Posted on Feb 12, 2011

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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

I have a 1996 Acura 3.5 R.L. just put a new fuel pump in and it won't start. It turns over, but will not stay started.


Check your main fuel relay.



Fuel Supply System


PGM-FI Main Relay


Description


This PGM-FI main relay is located behind the dashboard


lower cover. The PGM-FI main relay actually contains


two individual relays. One relay is energized whenever


the ignition is on. It supplies battery voltage to the PCM,


power to the fuel injectors, and power for the second


relay. The second relay is energized for 2 seconds when


the ignition is switched on, and when the engine is running.


It supplies power to the fuel pump.


PGM-FI


MAIN RELAY



FUEL


PUMP


RELAY


Relay Testing


NOTE: If the engine starts and continues to run, the PGMFI


main relay is OK.


1. Remove the PGM-FI main relay.


2. Attach the battery positive terminal to the No. 3*


terminal and the battery negative terminal to the


No. 2* terminal of the PGM-FI main relay. Then


check for continuity between the No. 5* terminal and


No. 2 terminal of the PGM-FI main relay.


• If there is continuity, go on to step 3.


• If there is no continuity, replace the relay and


retest.



*: 8P CONNECTOR


To FUEL PUMP


3. Attach the battery positive terminal to the No. 4 terminal


and the battery negative terminal to the No.


7* terminal of the PGM-FI main relay. Then check


that there is continuity between the No. 3 terminal


and No. 1 terminal of the PGM-FI main relay.


• If there is continuity, go on to step 4.


• If there is no continuity, replace the relay and


retest.


4. Attach the battery positive terminal to the No. 1 terminal


and battery negative terminal to the No. 2*


terminal of the PGM-FI main relay. Then check that


there is continuity between the No. 5* terminal and


No. 2 terminal of the PGM-FI main relay.


• If there is continuity, the relay is OK;


If the fuel pump still does not work, go to Harness


Testing on the next page.


• If there is no continuity, replace the relay and


retest.



To PCM CONNECTOR


TERMINAL A4


To ST. SWITCH


To GROUND


To IGN. 1 To BAT


To PCM


CONNECTOR TERMINALS


A13 and B1


FUEL PUMP


RESISTOR


FUEL PUMP

Sep 18, 2013 | 1996 Acura TL Series

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

2 Answers

Show me a picture where the fuel pump relay is located on 1994 Acura Legend?


selectachapter.gif

Acura Coupes and Sedans 1994-2000 Repair Information

PGM-FI Main Relay

Print
This relay is located behind the dashboard's lower cover. It consists of two individual relays. One is energized whenever the ignition is ON , thus supplying battery voltage to the Powertrain Control Module (PCM). This relay also supplies voltage to the fuel injectors, and power to the second relay. The second relay is energized for two seconds, when the engine is turned ON , to power the fuel pump.
See Figure 1

0900c1528008be04.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 1: Schematic of the PGM-FI relay
Testing
If the engine starts and continues to run, the PGM-FI relay is working and does not need to be replaced.
See Figure 2

0900c1528008be05.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 2: PGM-FI relay terminal numbers

  1. Remove the relay.
  2. Apply battery voltage to the number three terminal.
  3. Ground the number two terminal.
  4. Check for continuity between terminals five and two.
  5. If continuity is detected, proceed to the step 7.
  6. If there is no continuity, replace the relay.
  7. Connect the number four terminal to the positive side of the battery.
  8. Ground the number two terminal of the relay.
  9. Check for continuity between the number five terminal and the number two terminal of the relay.
  10. If there is continuity, the relay checks out "OK". If the fuel pump still does not work, test the harness.
  11. If there is no continuity, replace the relay and retest.

Mar 11, 2013 | Cars & Trucks

2 Answers

Buzzing fuel pump


sounds like the fuel pump relay is stuck on. find the relay and replace it. hope this helps mike

Jun 16, 2009 | Acura TL Cars & Trucks

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

3 Answers

86 honda prelude si 2.0 dies, won't restart


hey sounds to me like it's the alternator see when the alternator is not working properly the main source of direct energy comes from the battery and when that runs out it makes your car die . then it might turn on again but it does not last. u shuld have you alternator checked to make sure if not ask me again..

Dec 27, 2008 | 1986 Honda Prelude

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