93 190s 2.3 fires then dies

[steve n]

the only thing different that i noticed before it died was the coolant lite started comming on.added coolant,checked oil ,added oil.checked battery voltage,disconnected battery hoping to possibly reset emc,one other maybe the exhaust rattles a bit ,any sensors down there?is there a way to manually read trouble codes?any info would be greatly appreciated

[mpolli]

Please be more specific on the symptom. Does it start every time and run perfectly for 1 or 2 sec then die or are the symptoms otherwise?

[steve n]

if it sits overnite or for a while,it will start and try to run then die after about 1 second.then maybe 6-10 tries nothing then it'll try to run once then nothing again. to me it seems like one of the sensors is not talkin properly to the ecm or whatever MB calls it .i cant find any sensor perameters or info on diagnostics.thank you

[Arthur Dalton]

OVP possible

Do a search .............

[steve n]

thanks for pov info.removed POV relay and tested it and everything tested ok according to relay schematic,not the problem.any other ideas would be greatly appreciated

[mpolli]

Well, I would guess either a fuel problem or a spark problem (OK well maybe that's not much of a guess). Anyway, can you verify either spark and/or fuel?

[slk230red]

Assuming the spark plugs, spark plug wires, distributor cap and rotor OK, the first thing I would check is the vacuum hoses going to and from the Idle Control Valve. The bottom one going under the intake and the top one going to the intake manifold and going to the front of the air cleaner housing.

If those hoses are in good shape and tightly connected, I would then check the Fuel Pump Relay. If the fuel pumps are operating and the engine is getting fuel, I would verify you are getting spark. If not, then check the Crankshaft Position Sensor.

[david s poole]

did you check the fuse in the top of the ovp relay[behind the battery]?

[86560SEL]

I have never seen a 190S... is this a sport version of the 190E?

[Arthur Dalton]

It's the "Limited Edition" ....

[steve n]

my apoligies for the S,what my girlfriend meant was E.anyhow,i checked the POV relay and fuse,the 2 relays in the fuse box and theyre ok,it has spark so im going under the air cleaner.where is the fuel pump and filter located?I'll go see if I can find them.Thanks for the help on the 190E.

[brianlilbsky]

fuel pump and filter are both under the car. underneath the rear seat on the drivers side just in front of the rear tire. there's a cover over it, uses a 10mm to take the three plastic bolts off.

[jimandsuzy]

I'm curious steve n, how did you check the OVP relay? What test did you do that shows it to be OK?

[Mike Murrell]

I always perform a continuity test on fuses unless they are clearly blown.

Sometimes they "look" OK, but are not.

I too am curious about how you tested the OVP.