eddyhascal22

A couple of times in the last 2 weeks my E320 cranks fast but won't fire up. After several attempts it starts normally. It usually fires on the 1st crank. I searched several pages of threads and found this problem mentioned a couple of times but no cause was mentioned. Suggestions were that they take it to the dealer. I don't like my dealer and he's 50 miles away. Any new suggestions or theories as to why this is happening?

Thanks for the help.

ohlord

active or pending?What year E320?
changed fuel filter lately if not it is time.diy on benzworld.org w210 diy section.
Other possibles cam position sensor,easy diy.How many miles on the car?
#94169 obd2 reader is on sale at the hb store for 55 bucks or go to autozone and get the codes read to see if you have any.
http://www.harborfreight.com/cpi/cta..._stores.taf#OR
keep us posted.

shuor

Check engine light on?

eddyhascal22

It's a 99 V6. Check engine light is not on. Thanks for the tip about Auto Zone and codes. I had a cam position sensor go out on my 99 CLK430 but it didn't act like this. In the CLK it would just die when the car was well warmed up, like at a traffic light. The E320 has only done it after the engine was running OK but not that warm and then got turned off.

hadam

It is the CPS sensor. I just changed in my W210. It is one 30 minutes job. Per Ohlord I bought it from Autohauze of AZ for $55 with shipping.

ohlord

hard starts when cold,crank sensor hard starts or stall when warmed up.
both easy diy's and both rarely throw codes,so it is often cheaper at the price from autohausaz.com to r/r both or the one that is the most common problem.Then have the honor of having the dealer screw you to tell you the same thing and charge you $300-500 bucks to do what you can do for yourself for less than $100.

Yellow98Cobra

Well my E430 is doing the exact same thing. Its even died twice while running, but starts back up. My mechanic said I needed 2 crank sensors and 1 cam sensor. Do them all at once. That sound correct? Also how hard is it to change myself? I dont have a jack, so crawling under the car isnt available. If I get my production number can you all get me the parts. I think I can save money getting them myself and having him put them on.

Thanks,

Paul

Yellow98Cobra

My production is 03/00

benzobanshee

there are a few things that it could be. The crank sensor is the most common of all. The other thing is the fuel pump. The only way to check is checking pressures at time of problem. The way you could test the crank sensor is remove it and heat it up with a heat gun at the same time test sensor resistance. The ohms should be about .9 to 1.3k ohms. If it goes open or higher than spec it is bad. You don't need a jack to remove this sensor it is located drivers side behind head. Should be e8 torx bolt.

Yellow98Cobra

I just changed my CPS. Took me about 25 minutes. Hardest part was getting the screw loose. $66 total. I figured I saved about $110-$120.

daSong

i changed my cps last week... autohausaz was backordered so i had to shell out 150 at the dealer. anyway, they wanted 200 to put it in, what a joke. it took me less than 30 minutes to do it and i took my time. it isn't really that hard to get at unless your hands are ogreific. E8 torx is what you should use but i used a 1/4" socket... it fit pretty much perfectly, didn't feel any threat to stripping the bolt. make sure you use a thread-locker like locktite.

youseffex

Let your car sit overnight or at least 8 hours or so. Instead of trying to start the car as you normally would, turn the key so you engage the starter for just a second and turn the key back off (do not let the car even try to start), do this 3 or 4 times in a row. Then try to start it like you normally would, if it starts OK at this point then it is most likely the fuel pump check valve.

sammouhali

Hi guys,

I have the same problem; car is not starting + computer display is black + saloon rear light is off.

If it is the CPS, please share some photos on where it is located exactly

I was driving the car this morning and it was perfect. came back and parked the car; 3 hours later it is not starting; cranking very well but no start

The computer display was initially on, but after trying to start it several times, to no hope of course, computer display went off.

tried to disconnect the battery, with the key off, then I came to realize that the saloon rear light is off. Odd huh Disconnected the battery though, both positive and earthing, reconnected after few minutes... still the same.

Seems I am about to spend some real money

You help and any input is realy appreciated.

Thanks a lot.

Geh

Had The Same Problem, figured it out when i had to get the car towed to the shop cause it finally gave up on starting, ended up being the fuel pump in my case :\

sammouhali

You are absolutely correct; yurned out to be the fuel pump.

Any suggestions regarding the dash board cluster black out?!

Thanks,