Hard to start when engine is cold

Your 1999 Mitsubishi Diamante is a 3.5L MFI SOHC 6cyl engine.
MFI = multi-port fuel injection
SOHC = single overhead camshaft
This answer covers Mitsubishi Diamante1.8L, 2.4L, 3.0L (SOHC and DOHC), 3.5L, and 1997-2000 1.5L Engines.

2.4L engine shown, others similar.

Fig.1 - CKP position and its two mounting bolts


In Fig. 1, the two arrows point to the CKP (crankshaft position sensor) mounting bolts to remove. 2.4L engine shown.

Fig.2 - CKP reluctor removal

Remove the sensor and slide the reluctor wheel off of the crankshaft-2.4L engine shown.

1. Disconnect the negative battery cable.
2. Remove the timing belt.
3. Unplug the sensor connector.
4. Unfasten the two retaining bolts, then remove the CKP sensor from the vehicle.
5. Installation is the reverse of the removal procedure.

Reference: Autozone online repair guide: Mitsubishi Galant/Mirage/Diamante 1990-2000, at
www.autozone.com

Fig.3 - photo - new 99Diamante CKP, a Wells part #SU4313

Legnum?
Mitsubishi Legnum????
Mitsubishi Aspire
Mitsubishi MX/MF
Mitsubishi VRG
Mitsubishi VRM (Hong Kong)
9 engines offered, day 1.
and many trans,
4-speed automatic
5-speed manual
5-speed semi-automatic

Mitsubishi F4A23-2; 4 Speed
KM175, KM176, KM177 - F4A21-2 (176-5), K4A22-2 (175-5), F4A23-2 (177-8); ES Model
41TE
F4A33-1
the truth is , you didnt post country, nor engine size.
they match engine power to transmission (load rating)
so>? forget that.. that is for later.
IT DIED< so if the engine dont START the tranny issues are moot.
so does it crank.????
if it cranks , it next needs spark got spark to all cylinders.
that is if its not the Diesel engine, IS IT??

Hi there:
Check this on 1990 Mitsubishi Galant 2.0 liter SOHC L4...


Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Hi there:
Check this on 1990 Mitsubishi Galant 2.0 liter SOHC L4...


Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

check oil level

The first step is to borrow a scan tool to read what the error engine code that resulted in a check engine light.

Look the code up particularly for your engine and you will most likely find the fault.

You can report this Check engine code on this website and get some ideas for repair.

If the car was driveable you could take it to your friendly auto parts store where many of the stores will read the code complementary.

Hope This Helps?

try calling a junkyard and see if they will tell you the enterchange ok good luck

Your car will have the 2.4L SOHC engine in it (AKA 4G64). This manual will show you how to replace the timing belt (and more). Timing belt procedures start on page 33.

http://www.scribd.com/doc/4570538/Mitsubishi-4G63-4G64-Engine

(P.S. this manual also includes the 4G63 engine, you can identify your engine by looking at the procedures for the Single OverHead Cam[or SOHC])

The evaporator is freezing up. Check to make sure it's not low on freon.

fuel mix is too rich,check temperature sender.thermocontact,