Question about 1999 Mitsubishi Diamante

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2000 Mitsubishi Diamante / car starts but will not turn over, replaced spark plugs, wires, rotor, distributor cap , and new starter

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Make sure that the timing belt has not failed. Regular maintenance service is every 60,000 miles. Also, perform a compression check on all cylinders and compare for proper specs.

Posted on Apr 23, 2010

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CAR WONT START!!! I was driving and the car


Issues are most likely to arise with the spark and fuel (and 90% will be spark), so solving starting and stalling problems should begin there, after you've made a general inspection to make sure all hoses and wires are connected, and that the air filter isn't clogged solid with dirt.
A warning here before we go any further: If you're using an aftermarket distributor cap, rotor, igniter, coil and/or plug wires, be aware that quality is variable and they are unlikely to be anywhere near OEM standard, even if they're sold as "premium". There's a reason such parts are cheaper. Poor-quality aftermarket parts can (will) cause their own problems that can greatly complicate diagnosis of starting problems. For the little extra cost, new OEM is always the safest. Also, never crank the engine with the plug wires removed, or with the distributor cap off, except for brief (very brief) testing purposes. Doing so can overheat and damage the ignition coil.

Aug 14, 2013 | 2000 Mitsubishi Diamante

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Mitsubishi Diamante 2001, Car Will Not Start, Attempts to Crank, But no Fire. Blowing Engine Control Fuses repeatedly.


For the sake of completeness, here's the full no-start Troubleshooting Guide for the 2001 6 cylinder 3.5L MFI Mitsu Diamante, but the problem with your car is line item #6 - the ECC (Engine Control Computer) is shorted/dead. Without an ECC, the Diamante will (a) get no spark, since the ignition timing comes from the computer, and (b) get no fuel, since the fuel injectors are operated by the computer as well. The engine will turn over, since running the starter motor is a non-computer controlled matter of a correctly functioning ignition switch, a charged battery, and good wiring to a functional starter motor/solenoid, but will never start.
The clue pointing directly to the ECC failure is the blowing ECC fuses. These fuses are blowing to tell you that the ECC is shorted dead.
Since the ECC is expensive, exhaustively check out all other possible sources of the problems, but with so few problems causing loww of both spark and fuel, combined with the blown ECC fuses pointing directly to the ECC, it seems that the ECC is the only culprit.
Here's a used 2001 Mitsu Diamante ECC at Ebay for $175.

http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=270828804340+&item=270828804340&lgeo=1&vectorid=229466


Priority Action Part Type Cause
1 Inspect Choke - Stuck or Improperly Functioning Choke.
2 Inspect Fuel Filter - Clogged or Dirty Fuel Filter.
3 Inspect Fuel Pump Relay - Faulty Fuel Pump Relay.
4 Inspect Fuel Injector Pressure Regulator - Faulty Fuel Injector Pressure Regulator.
5 Inspect Fuel Pump - Low Fuel Pressure.
6 Inspect Engine Control Computer - Incorrect Operating Information Being Delivered and Sent From The EEC.
7 Inspect Fuel Pump Strainer - Clogged or Dirty Fuel Pump Strainer.
8 Inspect Ignition Switch - Improperly Connected or Faulty Ignition Switch.
9 Inspect Battery - Battery Discharged or Faulty.
10 Inspect Battery Cable - Coroded, Broken, Shorted or Poorly Connected Battery Cable.
11 Inspect Solenoid - Starter Solenoid Faulty.
12 Inspect Starter - Starter Motor Faulty.
13 Inspect Wireset - Worn or Damaged Spark Plug Wires.
14 Inspect Ignition Coil - Faulty Ignition Coil.
15 Inspect Distributor Cap - Loose, Cracked or Worn Distributor Cap.
16 Inspect Spark Plugs - Incorrectly Gapped or Fouled Spark Plug(s).
17 Inspect Distributor Rotor - Loose, Cracked or Worn Distributor Rotor.
18 Inspect Fuel Tank - Fuel Tank Empty.
19 Inspect Carburetor - Worn, Faulty or Damaged Carburetor.

The fuel pump strainer is a sock-like strainer in the fuel tank on the input side of the fuel pump designed to protect the fuel pump by straining out any debris in the tank (similar to the way that the fuel filter protects the engine/fuel injectors/fuel pressure regulator).

Nov 27, 2011 | 2001 Mitsubishi Diamante

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I have a 1990 mitsubishi might max it wont run smooth unless you keep your foot on the gas and keep the rpms up a little bit and it wont drive cause it stalls everytime you try to move it. ive replaced the...


You've already eliminated the spark plug & wireset, distributor cap & rotor.
Sounds like your car needs a tune-up, specifically, the PCV (positive crankcase ventilation) valve, and/of the EGR (Exhaust Gas Recirculation) valve.

Components checked/replaced during a tune-up are:
air filter
motor oil
motor oil filter
breather filter
fuel filter(s)
fuel strainer
PCV valve
EGR valve
spark plugs
spark plug wires
ECM or distributor cap & rotor
cabin air filter
transmission oil filter
transmission oil
engine coolant
check all vacuum hoses and lines

Troubleshooting the no-start condition - from the 1990 Mitsu Mighty Max Repair Manual:

Priority Action Part Type -- Cause
1 Inspect Battery -- Battery Discharged or Faulty.
2 Inspect Battery Cable -- Corroded, Broken, Shorted or Poorly Connected Battery Cable.
3 Inspect Distributor Cap -- Distributor Cap Cracked or Burned.
3 Inspect Fuel Filter -- Clogged or Dirty Fuel Filter.
5 Inspect Ignition Coil -- Faulty Ignition Coil.
6 Inspect Wireset -- Worn, Damaged or Faulty Spark Plug Wire(s).
7 Inspect Spark Plug -- Incorrectly Gapped or Fouled Spark Plug(s).
8 Inspect Starter -- Starter Motor Faulty.
9 Inspect Fuel Pump -- Low Fuel Pressure.
10 Inspect Solenoid Switch -- Faulty Starter Solenoid Switch.
11 Inspect Fuel Pump Relay -- Faulty Fuel Pump Relay.
12 Inspect Fuel Injector Pressure Regulator -- Faulty Fuel Injector Pressure Regulator.
13 Inspect Ignition Switch -- Improperly Connected or Faulty Ignition Switch.
14 Inspect Starter Drive -- Faulty Starter Drive.
15 Inspect Fuel Injector -- Dirty or Worn Fuel Injectors.
16 Inspect Fuel Pump Strainer -- Clogged or Dirty Fuel Pump Strainerat.
17 Inspect Engine Control Computer -- Incorrect Operating Information Being Delivered and Sent From The EEC.
18 Inspect Fuel Tank -- Fuel Tank Empty.
19 Inspect Carburetor -- Carburetor Flooded or Faulty Choke.
20 Inspect Distributor -- Worn, Loose, or Incorrectly Installed Distributor.

Aug 17, 2011 | 1993 Mitsubishi Mighty Max

1 Answer

Where is the distributor cap on my 1998 Mitsubishi Diamante?


That car does have a distributor cap. It has coil packs. Trace your spark plug wires to find them.

Jan 02, 2011 | 1998 Mitsubishi Diamante

2 Answers

Will turn over but not start


1 see if you are getting spark 2 if not ecm is bad, or cap,or distributor 3 if yes timming is off hope this helps

Apr 14, 2010 | 2000 Mitsubishi Diamante

1 Answer

Car will turn over but not start.


is it possible the rotor is in the wrong position remove cap and rotor and flip the rotor 180 degrees and you might get lucky hope this helps good luck

Apr 12, 2010 | 2000 Mitsubishi Diamante

2 Answers

Firing order 1999 mitsubishi diamonte need diagram


The firing order is 1-2-3-4-5-6

The rotor spins counter clockwise and bottom of the distributor cap is the number one spark plug lead.

For more details, you can check the information about Mitsubishi Galant/Mirage/Diamante 1990-2000 FIRING ORDERS in Autozone.com (free register).

Hope this helps.

Sep 08, 2009 | 1999 Mitsubishi Diamante

1 Answer

Car Shaking


different things are happening here. get wheels balanced, and motor checked.

Apr 24, 2009 | 1992 Mitsubishi Diamante

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