Have a 92 isuzu rodeo that stalls when the engine is cold after i start it but when it gets to normal operating temp it runs fine also when it is cold if you shut the hood hard it will die imediately

hot or cold engine,or both????????????????????
sure...
the ECU works OVERTIME; hard, to keep the engine running.
this is done by the action of the ISC valve.
so can you keep it running with a fast right foot??????????
a real mech needs to drive car.
does it have full power on hills?
is the tune up service done, the 60kmile repeats and needs to be done.
the ECU can not keep idle right on any engine that runs like crappppppp.

1: all fuses good.
2: engine never warms to normal 180F+ temp and hold???
3: not tuned up.
4: engine misfiring.
5: engine flooding.
6: engine starving for fuel.
7: OMG, the ISC wires fell off, (inspections do work on old cars)

there are simple tests. for each case.
one more #8. EFI system lost 12vdc power. stalls.
12.6vdc not running, 13.3v -15v running.

i really dont see a problem. that doesnt sound to odd

Try starting engine when cold and rad cap, and/or coolant return cap off, and turn heater on. Let engine run and add coolant as necessary to rad as /if level goes down, and allow engine to reach normal operating temperature, and wait for the rad fan to come on, 2 or 3 times. Give engine a slight rev for 5 seconds or so, every once in a while while doing this, just to increase flow and help expel air better. Keep an eye on coolant level while doing it, and add as necessary, then put cap(s) back on, fill bottle to proper level, and try that. If that doesn't work, I'd question if air hole in thermostat was positioned properly when new one was installed, if you have a V-6 engine.

It sounds like an engine temp sensor is open.. When your engine is cold or anti-freeze is cold your ECU or ECM gets a signal from the temp sensor for cold engine start. It would make sense that it works fine when hot because the resistance on the sensor is a lot lower. Take an ohm meter if you have one and check the resistance across the temp sensor pins. When the engine is cold the resisitance should be really high. Start and warm up your car to normal temp and check it again. It should be a lot lower now. If not replace it. Hope this helps.

It is normal for oil pressure to be higher when the oil is cold. As the oil heats up, it will thin out. Since your oil pump is driven faster with the acceleration of the engine, your pressure will also increase. On a engine up to full temp, your oil pressure will probably be around 20 psi and maybe up to 60 at full load. But on a cold engine, you may see 60 psi at idle. I dont know if your high oil pressure is causing your vehicle to stall, but maybe your running the wrong weight/type of oil for your truck. If you live in a extreme cold area, you may want to look into a block heater to help warm up your engine faster.

run the fault codes
look for ambient temp sensor or baro sensor problems

Good Day
Vale clearance cold
intake .006 in (.15 mm)
exhaust .010 in (.25 mm)

Timing
1. With transmission in Neutral or park, start engine and warm to normal operating temp. turn eng,and all accessories off. connect Tachometer. Connect timing light to no 1 spark plug wire.

2. Disconnect and plug fuel vapor canister purge hose and EGR vacuum hose. Start and ensure idle is 900 RPM. adjust idle as required. Check ignition timing ( 12 @ 900)

3. If adjustment is required, loosen distributor hold down bolt and turn until timing is within specification. Tighten distributor hold down bolt and recheck timing. adjust idle speed as required.

hope this helps

Cheers

I'm having the same problem. I have a 1992 Rodeo V-6 4x4. I replaced the alternator, battery, and even took out a killer stereo system in case of shorts (didn't have the patience to check). Except mine does start with a little boost. I'm thinking of replacing the battery for a bigger one, but not sure if that will take care of the problem. Help anyone?

hey
u says that u didn't replace the thermostat yet
Your thermostat is sticking. DO NOT DRIVE if the car overheats, you can do some serious engine damage, if you haven't done so already. Get the thermostat changed out immediately.

What happened is your thermostat is sticking. It was stuck and you saw it overheat (and should have stopped immediately). The added pressure from having a stuck thermostat pushes the fluild into the overflow.

The temperature may have gone back to normal if the thermostat "finally" opened. However, since the thermostat is sticking, it is unreliable and I would get it replaced.

Driving when the engine overheats can easily cause gaskets, such as the head gasket to fail and heads to warp. If this has occurred, you're looking at a new engine.