03 C240 cranks no start
Thread Starter
Newbie
Joined: Dec 2010
Posts: 7
Likes: 0
c240
03 C240 cranks no start
Hi just trying to help a lady with a brokedown C240, she was driving battery/alt visit workshop came on the went off several times, got off freeway car died, restarted went 100ft then died and won't restart battery checks good touched valve on fuel rail found squirt of fuel when pushed and already replaced crankshaft sensor at back of drivers side bell housing. Not sure what else to chase, it cranks just fine but doesn't start please help!!!
Banned
Joined: Aug 2010
Posts: 1,073
Likes: 1
From: North San diego
C320 2002
My car did the same thing she may need a new battery.. I was driving by the beach side left my fog lights on while i was on the phone talking for about 30 mins.. Car barley started.. Drove around for another 10 mins pulled over to talk on the phone again.. This time i left my flashers on and my fog lights.. 10 mins later i go to start the car and all i hear is this CLICK. Car wouldn't turn over Waited for AAA to get a jump.. They hooked up a battery charger to my car and that worked for 2 hours until i got home. Came to find out that night i had a bad cell in my battery and it wouldn't charge anymore..
Read the voltage before cranking and read the voltage when trying to crank the car. Come back and report on that.
Read the voltage before cranking and read the voltage when trying to crank the car. Come back and report on that.
Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 192
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Battery or alternator failing or both is still possible. Get the battery load tested or replace. Try a careful jump start. No sparking etc. You can blow a SAM.
Can also be plugs, wires or coils but give it a go with a fully charged healthy 100 Ah battery. Sometimes these cars even battle to start with a jump if the battery is lazy.
You have checked fuel rail pressure which is positive so pump is operating. You do not know whether she is injecting or if the pressure is adequate. When last did the car have a fuel filter? Fuel pressure regulator is built into the filter. You know the CPS is good but check the connection.
I think that the ignition is down on power so try the electrical side first.
Can also be plugs, wires or coils but give it a go with a fully charged healthy 100 Ah battery. Sometimes these cars even battle to start with a jump if the battery is lazy.
You have checked fuel rail pressure which is positive so pump is operating. You do not know whether she is injecting or if the pressure is adequate. When last did the car have a fuel filter? Fuel pressure regulator is built into the filter. You know the CPS is good but check the connection.
I think that the ignition is down on power so try the electrical side first.
Thread Starter
Newbie
Joined: Dec 2010
Posts: 7
Likes: 0
c240
Well it cranks great, there is fuel at rail pressure valve. So that rules out fuel and pcm and crank sensor, as far as I know if there is a crank sensor issue or pcm issue it won't turn on fuel pump but that is ok, I did notice a 15 amp fuse that was blown which I switched with another fuse not sure what it was cause her fuse box card is missing
Trending Topics
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 192
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
When was the CPS replaced? Always check the last thing fiddled with. This is very typical of CPS. Do you have spark? & remember that compression suppresses spark but at least check one plug
Last edited by Glyn M Ruck; Dec 16, 2010 at 05:59 PM.
Thread Starter
Newbie
Joined: Dec 2010
Posts: 7
Likes: 0
c240
I havnt checked for spark and I just put in the cps last night she got a cam sensor today and I will put it in tomorrow. Ill post as soon as I know. I did notice some on the cylinder 2 or rf coil pack area
Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 192
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 192
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
BTW - another suggestion - Please get hold of an OBDII scanner & check for stored codes. The plug is under a rectangular cover under the steering column. It might save a lot of guessing & trial & error.
