I have a mitsubishi galant ms 1989 1.8L SOHC with the 4g37 fuel injected motor. I am having overheating propblems and I can't get it sorted. The car is building up an air lock in the top radiator

https://www.google.com/search?q=Need+to+no+where+mass+air+sensor+located+on+a+2002+cavalier+2.2+motor&biw=1363&bih=650&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwidypiQ58LQAhXJ7iYKHevTAvsQsAQIHQ#tbm=isch&q=Need+to+know+VALVE+clearance+adjustment+original+4G37+Mitsubishi+Galant+1992+-+1.8

Hope this helps

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

Hi Kevin, Mate I had a look on youtube and all those 2.4L motors are belt driven... The two youtube videos links below are of a 2003 Mitsubishi Galant 2.4L with a timing belt and the next is a Mitsubishi 2.4L sohc with a timing belt, I hope this helps.....CHEERS.

Part 2 2003 Mitsubishi Galant 2 4 Timing Belt Installation

How to Remove and Replace the Timing belt and Water Pump Mitsubishi 2 4L...

Check the Fuel pump

2003 Mitsubishi Galant Repair and Maintenance - RepairPal

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Information on the 2003 Mitsubishi Galant, including known problems, recalls, user ...2002 Mitsubishi Galant ... it will crank but not start not getting any spark or fuel what can you suggest. would like . ... The fuel return line fitting at the fuel pump may be restricted, causing excessive fuel pressure in the fuel injection system.

intake .006
exhaust .010
jet valve "if applicable" .010
note:adjust when engine is hot

For 1999 Mitsubishi Galant 2.4L MFI SOHC 4cyl the Fuel Filter is located under hood, passenger side, upper firewall, mounted in fuel line .

Good luck (remember rated this).

this sounds like an electronic problem. the control unit thinks about 50000 cycles in a second. it's bound that there could be a problem. a second hand black box or computer box should fix your propblem. goodluck

On most vehicles covered by this manual, the fuel filter is located in the engine compartment, mounted to the firewall.

CAUTION Do not use conventional fuel filters, hoses or clamps when servicing fuel injection systems. They are not compatible with the injection system and could fail, causing personal injury or damage to the vehicle. Use only hoses and clamps specifically designed for fuel injection systems.

Hope this help (remember comment and rated this).

Has it overheated lately?
My wife overheated our Galant and it just stopped working, it cranks but that's it.
I pulled the sparkplugs and found them wrapped in a gewey jelly like substance. Like an oil/antifreeze combo.
I am going to replace the entire motor for $1000 as taking it to the mechanics to theorize and practice may cost more.

The thing you need to do is run a leak down test on the fuel pump overnight, hook up a fuel pump test guage to the fuel injector gas rail test port, run the engine, note the fuel pressure when you shut the engine off, it should not drop more than 5 PSI overnight, if it does you need a new fuel pump. Your car doesn't use a cold start valve, that was used on very early Bosch K-Jetronic fuel injection systems, they where last used in the 80's