I was driving my car from Florida to arizona and I'm stranded in San Antonio of I10 West. All of the sudden my car is hard to start it turns over fine but won't start till several tries and now just stalled while idling with brake held down in drive at a light. It only has 67,000 miles on it , I just got it back in October. I only use premium gas and I just took it before I left to get the oil changed and I also replaced the fuel filter ( I used the correct oil we checked it twice) help me!!! Any suggestions?

 

Crankshaft position sensor ...... have a Mercedes mechanic put it in. If you can find an independent shop. This is pretty common on this platform

 

It could be the Relay Control Module (RCM) too. I'm here in San Antonio, if you PM me I'll try to help out.

 

I just pmd you any help is much appreciated!!!! My car keeps stalling everytime I stop for gas

 

How much does this cost?

 

I didn't get your message, check your private messages I just sent you one.

 

At the most about 100.00

 

GET A BOSCH CPS if you buy a generic one, it can waste your time! We've seen this before.

You MIGHT consider a new battery, too. Probably is the CPS but bad batteries or corroded terminals have causes some problems with the engine running right.

ALSO, re-soldering of the Relay Control board is not a bad idea, either.

IN order of likely-hood: CPS, Relay Board, Battery

Do you have a check engine light on? If so, reading the code may tell us all we need to know.

 

Hey DBidault hope you can help out MissSilky. I see you've been a member since Oct. 2012. Haven't seen you at any of the GTGs or Cruise-ins. You are invited to join us any time.

 

Bosch is the best.. But mine from Advanced Auto is actually doing quite well, if you can't find the Bosch readily .. about 65 bucks...

 

Good thing you made it to SA as opposed to someplace like Flatonia.
There's a lot of realestate along I10. Hope you're up and running soon.

 

Hey Bill, I've wanted to get to some of the GTG's but I've been super busy since I joined here. I'll make it to one of the GTG's soon! I bought my car in Universal City back in Oct. I still have some things to do to make it a daily driver though!

I talked to MissSilky and her Dad. Engine cranks strong, no check engine light, and most of the time it stays running once it starts. That sounds like it could be an intermittent connection on something to me. They want to keep pushing ahead and I think they were driving while I was talking to them, I hope they make it okay.
Those of you that have had the bad CPS, did you get an OBD code set when it failed? and was it intermittent or a solid failure?

Doug

 

Seems 9.5 out of 10 throw the code. Mine fired twice after initial failure, and then croaked. I'm wondering about "new fuel" filter.. hope is was the OEM quality and not Auto Zone or equivalent ...

 

There's a lot of open territory between W. TX and AZ with little help. I hope they make it OK.

 

I didn't suspect the fuel filter at this point but I wouldn't rule it out since it was changed recently. My experience with bad (plugged) fuel filters is a lack of power and stumbling but not a no start issue.

 

It's also the pressure regulator..

 

I did mention that past Kerrville it's a long way to El Paso.

 

good point, I do remember reading that somewhere!

 

My car started many times after the CPS first failed. It is very easy to change and any decent mechanic can change it in 15 minutes. I actually just ordered a spare one I will keep in the trunk in case I ever need to change it out on the side of the road. Just try to get the Bosch brand if you can. Like someone said, there is a LOT of nothing in west Texas and beyond.

 

You can also search the forum for CPS Replacement if you want to try and replace it yourself.