Question about 1996 Mitsubishi Eclipse

2 Answers

Swapped a 1999 420A engine into a 1995 eclipse (also a 420A) and we have no spark. We started by checking the cam sensor and it is working properly it is upside down from the 95 but the ASD relay is operating so I assume it is intalled correctly for the 95 PCM. The crank sensor is also working properly the only thing we can't get is spark. I have placed a voltmeter on the connector going into the coil pack and the center pin gets 12V, then when measuring from center pin to either outside pin when cranking the voltage measures from -4V to 6V (negative 4 to a positive 6).

Posted by on

  • 1 more comment 
  • jefline Sep 27, 2010

    We took the valve cover off and watched the cams and valves as we turned the crank, the cams are fine. When looking from the front our car has the windshield washer fluid resevior directly behind the battery with the brake fluid next to it then the 4 relays sit behind the strut tower, with nothing to the left of them. Just trying to give the most accurate picture of what we are looking at. Thank you for your help so far.....

  • jefline Oct 18, 2010

    I just wanted to provide an update for anyone else who may have a similar problem, we ended up with two faulty crank position sensors, the one that was in the replacement engine and the one that was in the orriginal engine. Even though they both tested good (even had a mechanic confirm) they were somehow faulty. Once we installed the new crank sensor the car started just fine. On a side note the discussion about the cam sensor being installed plug up or plug down, this will likely get an argument but we did determine that the cam sensor can be positioned either way and the car will start and run, pass all diagnostic testing with a analyzer and perform the same. Again I am sure this will get an argument but I can assure everyone that in our car it did work. Last thing I wanted to mention is that there appears to be multiple wiring diagrams for the 95-99 eclipse, after searching alldata we found one that matched our car, I strongly suggest good research for anyone who attemps to do what we did. Thank you to dusty for trying to provide us with help, your efforts helped us prove our PCM was good.

  • jefline Oct 18, 2010

    I just wanted to provide an update in case anyone else is haveing the same problems. We found that we had two faulty crank sensors. Surprisingly they both tested like they were good (mechanic confirmed our work for a fee) but when the mechanic put another crank sensor in the car started and ran fine. On a side note I wanted to provide an update on the cam sensor position, there were a few places on the internet that stated you could have the cam sensor positioned plug up and on here it was discussed that this simply will not work. On our car we were able to start, run, analyze and drive the car with the cam sensor plug up or plug down with no change. I know this will get an argument but it did work this way for us, I imagine this is why it is not keyed to fit only one way. I still want to say thanks to dusty for providing us with additional wiring information, we finally proved that our PCM was working just fine. I will add that we did have to get a few more diagrams from alldata to figure out why our car has 4 relays where all the information we had seen showed only two or three relays on the firewall. I would strongly recommend that anyone attempting an engine swap with this car look at the different manuals before deciding on which one to buy, I won't promote one over the other but I know I sure wish we wouldn't have bought the first manual.

    Again thank you dusty for your help and information we saved buying a PCM from your info!



2 Answers

  • Level 1:

    An expert who has achieved level 1.

    New Friend:

    An expert that has 1 follower.

  • Contributor
  • 1 Answer

This isnt really a solution, but a problem of my own. i have a 95 420a
eclipse. and ive replaced all sensors, the ecu 3 times now, and had the motor rebuilt. a shop couldnt even figure this problem out. cylinders 2&3 are not firing, when i switch the wires from the ecu 2&3 fire, then 1&4 does not.
ive replaced the brown wire as well. what sends the signal to pin out 41?

Posted on Feb 07, 2013

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Mitsubishi Master
  • 356 Answers

First the cam sensor shouldn't be upside down from the 95. they both should be with the plug facing down. they 95 CAS has a different plug than the 99 CAS.
the 95 has round pins and the 99 has flat pins.

swapped a 1999 420A engine - 9f942a5.jpg
also the 95-96 relays are opposite the 97-99


----------------swapped a 1999 420A engine - c98327d.jpg />97-99
besides that it could be the ecu. i also have heard of the locating pin on the intake cam shearing off, allowing the gear to turn with the timing belt without the actual camshaft spinning.

Posted on Sep 27, 2010

  • 1 more comment 
  • jefline Sep 27, 2010

    We tried the cam sensor in both orientations with the outside two wires swapped in both orientations and the only way we could get the ASD relay to operate was if the sensor was turned connector up and wired as it was on the 95. We know we are looking at the ASD as it is the relay that supplies the 12V to the center pin of the coil connector when it is working properly. For some reason the pictures you supplied only show two or three relays, our car has 4 up there the second one on the left when viewed from the front is the ASD on our car. It is a 95 Eclipse GS based on all records, the first owner is a teacher in town the second is a friend of ours and we only know the third owner because we got the car from him. It has never been wrecked or had any mods done to it, it just had the last owner fail to change the oil. So why our car doesn't match your images I can't answer, but I do know what relay is the ASD in our case and did try to get it to operate properly with multiple configurations and again the only way it worked was by turning the cam sensor connector up and keeping the factory wiring. The thing that no one has been able to answer is what we should see for voltage on the coil connector pins. I suspect our PCM is bad but would like to confirm what I should see to the coil from the PCM before we spend another $240 or so on this project.

  • alex metro
    alex metro Sep 28, 2010

    if your using the 99 sensors and coil and changed out the cam, crank and coil plugs, here are the pinouts for a 95 incase you need to verify they are wired correctly.
    looking at the sensor/coil
    | |

    pin 1: brown: to pin 41 on PCM
    pin 2: black/red: > J/C 3 > ASD relay
    pin 3: black/blue: > pin 21 PCM

    pin 1: yellow: > J/C 4 > pin 4 PCM
    pin 2: black/green: > J/C 3 > (-)ground
    pin 3: blue/red: > pin 26 PCM

    pin 1: yellow: > J/C 4 > pin 4 PCM
    pin 2: black/green: > J/C 3 > (-)ground
    pin 3: yellow/white: > pin 25 PCM

    The cam sensor needs to be installed plug down on all years. If its not you'll be 180 out of phase.
    Were the cam gears removed/reinstalled for any reason before the engine was installed? Cause the target magnet on the cam can only be installed 1 way. So the only way it would read correctly upside down would be: you would have had to installed the intake cam gear backwards(the 2.4L side out). That would cause the intake cam(magnet) to be 180 out when the timing marks are lined up.

  • alex metro
    alex metro Sep 28, 2010

    i can't format or add pictures or anything on these replies. i'll just make my reply into a pdf file for you. just download it from.



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

1995 Mitsubishi eclipse starts runs 10 seconds then stalls

Is the Security light on? Could be too many things to list here. Step 1. Scan for codes. If no codes, see if it's losing spark or fuel or both. If it's losing fuel, it might be the pump or relay or wiring or computer. If no spark, it could be cam sensor or computer. Security light on means the key or anti-theft module has a problem. If equipped. Kind of what it sounds like, the computer shuts off the spark when the theft module does not detect the proper key chip.

May 07, 2015 | 1995 Mitsubishi Eclipse

3 Answers

1995 for Aspire will not start

also check whether the distributor is proper or not.

Oct 25, 2008 | 1995 Ford Aspire

1 Answer

I have a 1995 Mitsubishi Eclipse it isn't getting

Check the cam angle sensor and the power transistor.

Dec 11, 2011 | 1995 Mitsubishi Eclipse

1 Answer

My car is not getting spark its a 1995 eclipse

Check the cam sensor and the coil packs and the spark controller module.

Feb 24, 2011 | 1995 Mitsubishi Eclipse

1 Answer

Mitsubishi Eclipse 1995 no start, but cranks

no back-firing or anything like that. Double check firing order and how about your plugs/in good shape? How old is the plug wiring? Does the Eclipse have cam senors? If so, I would check them.

Apr 25, 2010 | 1995 Mitsubishi Eclipse

2 Answers

2003 mitsubishi eclips gt does not start have fuel but no spark

Crank sensor is dead get a new one have it replaced/ Cam sensor controls gas / Crank sensor controls Spark

Apr 04, 2010 | 2003 Mitsubishi Eclipse Coupe

1 Answer

1995 eclipse timing missing Plz Help!

you have idle air control valve and purge valve

Mar 14, 2010 | 1995 Mitsubishi Eclipse

1 Answer

Engine swap on 98 eclipse how can I tell if I have conpatable eng

98 model had 33 psi fuel pressure.timing is 2-8 btdc idle speed 650 to 850. 95 model has 43 psi fuel pressure timing is 5 btdc idle speed is 750.check your cam sensor crank sensor . check computer fuse .check injector fuses. your has a distributor on your car you can check timing with a scan tool. as far as i see that not much difference in engines.use the scanner to see if cam and crank sensor working or computer problems.

Apr 14, 2009 | 1995 Mitsubishi Eclipse

2 Answers

I have a 1995 mitsubishi eclipse, 4 cylinder, 2.0 non-turbo. The car will crank but there is no spark and we are not getting any gas. We've checked all of the fuses and the relays. Do you have any...

if you haven't checked the ASD relay, make sure its working.
175c874.jpg if thats okay, check the Cam Angle and Crank Angle sensors. if it isn't any of those, its probably the ECU

Jul 22, 2008 | Mitsubishi Eclipse Cars & Trucks

Not finding what you are looking for?
1996 Mitsubishi Eclipse Logo

2,309 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mitsubishi Experts


Level 3 Expert

79865 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8836 Answers

Are you a Mitsubishi Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides