Question about Mitsubishi Eclipse

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1991 Mitsu Eclipse is idling rough. The mechanic has changed spark plug wires & coil. Tightened the timing belt and still no luck. What started all of this was the change of the "computer." What can we do?

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  • mightymou201 Nov 05, 2008

    MY ECLIPSE IDLES HIGH IN PARK AND IN NEUTRAL BUT NOT IN OTHER GEARS

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  • 63 Answers

Idle air control valve?

Posted on Sep 16, 2008

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Why does my 89 pontiac 6000le idle slightly rough after having the fuel injectors replaced? The reason I had to have them replaced was because of the ethanol in todays fuel ruined the original fuel in


If it is idling like it was before the inj were replaced then you have fixed the wrong problem the ethonol doesn't damage injectors you probably have a spark plug wire that is bad or a coilpack is bad or you have a fouled spark plug? A compression test can tell you of any problems with the valves! The injectors are designed to be compatible with flamible liquids ie gasoline or alcohol! I have been a mechanic for 23 years and have never seen inj fail due to alcohol in today's gasolines! You might have been scammed? Anytime you have repairs done request your old parts to be returned to you! You might have to take the mechanic who claimed he replaced your inj to small claims court! Try replacing the plug wires and the spark plugs first if no change then get carburetor cleaner and with the engine running spray the inside of the throttle body where it is black with the throttle open and engine rpms increased if that doesn't change it the coil packs might be going bad there are three so buy all three as a set so you don't have to change them at different intervals! Depending on mileage the timing belt is reccommended to be changed at 150,000 miles the spark plugs are due at 100,000 the coil packs should last over 200,000 miles so I'm guessing it is time for major preventative maintenance? The timing belt being worn can cause rough idle too!

Jan 16, 2015 | Pontiac Cars & Trucks

1 Answer

Daewoo tacuma Just changed my spark plugs and HT leads now enging runs rough and stalls on idle


CHECK YOU FIRING ORDER, YOU MIXED THE IGNITION WIRES, IF IT IS A 4 CYL, FIRST CYLINDER #1 IS NEAR THE BELTS, CHECK COIL WIRES FOR NUMBERS, OR DISTRIBUTOR CAP FOR CYLINDER NUMBER OR COIL PACK FOR CYL #, AND FOLLOW THE WIRES TO THE SPARK PLUGS. MAKE SURE THEY ARE RIGHT, NEXT TIME DO ONE PLUG AND ONE WIRE AT THE TIME.

May 22, 2014 | Cars & Trucks

1 Answer

I got a 1999 ford ranger with a 2.5l it runs smooth at idle, an runs smooth while drive but bad fuel economy. when u rev up at idle an let go of the throttle it runs rough an then smooths out. ive...


You have two coils on this engine. Test each wire for spark with the engine running. You'll find at least one wire not sparking. replace the coil that has the wire that's not sparking.

May 14, 2011 | Ford Ranger Cars & Trucks

2 Answers

Changed timing belt on 2001 kia sportage but still runs rough


I would check the connectors on the coil packs, spark plugs and wires and replace them if they at all seem worn or tired. My 2000 sportage ran rough so I replaced the fuel filter, coil packs, spark plugs and wires, cleaned out the IAC valve, TPS, throttle body and intake tube, tightened the screws on the fuel pump access door under the right rear seat and cleaned the ground wire and the contact surface and I added 1 ground wire from the block to the firewall and 1 from the valve cover to the firewall. Your timing is more than likely right where it needs to be but the ignition may be slightly missing from a bad coil pack, dirty or fouled plugs or a bad plug wire.

Jun 01, 2010 | 2001 Kia Sportage

2 Answers

Transmission rebuilt 5 years ago on a 1997 Eclipse RS. Now, the RPM levels are extremely high even without full acceleration.


The likely cause for your high RPM may be caused by a vacuum leak in the engine. You can open the hood and check your hoses for cracks and leaks. This is a good place to start, but may no be a full solution.

Feb 03, 2010 | 1996 Mitsubishi Eclipse

1 Answer

Missing on my 1991 Honda Accord


check whit a spark tester if the distributor give enougth voltage , if to low the coil in the distributor are bad

Jan 16, 2010 | 1991 Honda Accord

2 Answers

How can we check the ignitor and coil ? what are the specs?


What engine do you have? You could still hear your fuel pump running but if you haven't checked the fuel pressure you may still have a problem with your fuel pump. You should be around 38 to 44 PSI when key is turned on not running. Did you verify you are getting spark or is there nothing to the plugs? Your ignition coil resistance should be (cold 9000-15,400 ohms) Primary should be .36-.55.
Your pickup coil resistance depending whether you are California or excluding California
California is
cold- pick up coil terminals G1 & G- Ohms 125-200
cold-Pick up coil terminals G2 & G- Ohms 125-200
cold-Pick up Coil terminals NE & G- Ohms 155-250
Ex. California models
cold-Pick up coil terminals G+ & G- Ohms 185-275
Cold-Pick up coil terminals NE+ & NE- Ohms 370-550 ohms
You also need to check air gap between PIck-up Coil & Signal rotor
California is .008-.020
Except California .008-.016

Here are some of the suggestions from Mitchell books:
ENGINE CRANKS BUT FAILS TO START:
*Ensure proper spark exists from ignition system
*Ensure Fuel system performs properly (fuel pump, Fuel filter, Fuel injectors, fuel pressure regulator).
*Check engine compression, valve clearance, valve timing and timing belt (if equipped)
Check airflow meter or MAP sensor and wiring
*Check idle air control valve (if equipped) and wiring.
*Check circuit opening relay and EFI main relay.
*Check STA signal at Engine Control Modual (ECM)
*Check Engine Control Modual (ECM) and wiring.

Aug 04, 2009 | 1995 Toyota Camry

1 Answer

1999 mitsubushi eclipse shows p1390 engine code


have you had a recent timming belt if so get it re timmed

Jul 29, 2009 | 1999 Mitsubishi Eclipse

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