C200 Staring Issues

[c200mart]

Hi all... just found the forum and hope someone can help!

I have a 1999 C200 and basically it starts, then misfires then dies

No Fault codes

Its had new fuel filter, new coils, new leads, new plugs, new crankshaft sensor and nothing at all has helped.

It has fuel, it has a spark.

Can anyone help ... I am stumped

Meant to say STARTING issues

 

[Cole@MBS]

Welcome c200mart, try replacing the relay in the boot next to the battery, thats the fuel pump relay, sounds like that is mucking about!!

 

[c200mart]

That relay seems to be working ok? Clicks on when you start the car ( or try to ) and then clicks off when it stalls

 

[Cole@MBS]

I would say then that the rotor pump is failing, what tester have you used to check for fault codes??

 

[c200mart]

Hi... I got a mechanic friend round with his snapon ethos computer.... can i ask what the rotor pump is?

 

[Cole@MBS]

Hold that thought!! just clocked yours is a 202, not sure if thats a tank pump on not, let you know in a mo!!

 

[c200mart]

When i changed the fuel filter i am pretty sure it was the pump that sat next to it ??

 

[Cole@MBS]

Yes you are right, its under the car, for some reason i was thinking it was a 203, thats in the tank! you say you have spark and fuel, have you checked you still have fuel at the rail once it cuts out?

 

[c200mart]

Yep checked that and all seemed well

 

[Cole@MBS]

Crap, well then in that case i would start thinking engine ecu, i would say find a indy with a star machine so you can see all the values as your trying to start it!!

 

[roofless]

your car might have a overload protector relay No 128 on this link check the fuse if it's ok take it out then put it back & try it http://www.detali.ru/cat/oem_mb2.as...417717.418&CT=F&cat=45H&SID=54&SGR=045&SGN=05

 

[Cole@MBS]

your car might have a overload protector relay No 128 on this link check the fuse if it's ok take it out then put it back & try it http://www.detali.ru/cat/oem_mb2.as...417717.418&CT=F&cat=45H&SID=54&SGR=045&SGN=05

Good point, forgot about that!

 

[roofless]

Good point, forgot about that!

i was thinking the options ecu-loom-immobiliser ?

 

[Cole@MBS]

i was thinking the options ecu-loom-immobiliser ?

Don't believe the loom prob applies to the 202, might be wrong! but then the immobiliser does big time! 2 heads are better than one!!

 

[television]

He has a spark, and the starter spins so alarm-immobiliser OK

 

[roofless]

Don't believe the loom prob applies to the 202, might be wrong! but then the immobiliser does big time! 2 heads are better than one!!

a few good 202 immob guys on here hope they can help

 

[c200mart]

Thanks for all the replies..... keep the ideas coming.... i need this car to work tomorrow !

 

[c200mart]

The anap on machine gives warm up values etc etc

 

[c200mart]

One thing worth pointing out is that when i spray easy start down the throttle pot it will run perfectly until i stop spraying.

 

[television]

Then it looks like pump problems, thats the high pressure one