nick3453

Just recently when I go to start my car it will turn over but not start. It takes about 10 times plus working the gas pedal to get it started. Once started...it runs great. Just had my plugs and o2 sensors replaced. Any ideas what could be the cause and how I can fix it?

hoontastic

crankshaft position sensor?

nick3453

Should I get the CEL and a code if its that?

hoontastic

probably.. also our cars are sensitive to voltage. It may be as simple as an end of life battery.

nick3453

oh..I also just had my battery and start checked out...they are both good. Maybe its the fuel pump going bad. Ive read that you can check that by connecting a fuel pressure gauge to the fuel rail?

DRBC43AMG

I thought the CPS allowed the car to start when cold but refused when hot. At least that was what happened with mine last year.

503C43 ////AMG

You need 3 things for your engine to run:

1.) air
2.) fuel
3.) spark

air is almost a given so I always start with spark as it is the easiest to determine if it is not functioning properly then I move onto fuel and end with air.

Check to see if you are getting spark from the plugs then I would check the fuel pump.

The fact that you have to pump the pedal like your AMG was made in the 60's is puzzling

nick3453

lol...i know right. Like I said earlier, I just replaced my plugs and O2 sensors. Its wierd...runs like a beast once its started....so im kinda iffy on the fuel pump being the prob because wouldnt not run good...or at all...if the fuel pump was bad?

503C43 ////AMG

I wouldn't rule anything out until you have confirmed that it is in PERFECT working order, I have seen odd problems in the past that made NO sense. Since you JUST replaced your plugs and O2 sensors perhaps you may want to start there.

I would start like I had suggested and systematically start eliminating each variable, otherwise take it to a shop...

E2.3

The EXACT same thing happened to my C43. It was the CPS. Never had a problem starting since (three years). Very easy to access and install (one bolt). Under 100 bucks. Good luck.

98 MBC43 AMG

it start like it wanna turn over but then it stops aft 5second but it never start it turn over but never start what yall think is the problem. it has 185,000 miles n 3months ago i did fuel filter, oil n filter change, a fuel drip from a license dealer they said the spark plug was still good im almost do for another oil filter change. can sumone help me figure out whats wrong with my AMG

DRBC43AMG

Get the codes pulled and checked. If anything is wrong you will know then.

98 MBC43 AMG

EVEN IF NO CODES SHOWED UP ON THE DASHBOARD

DRBC43AMG

Yes, codes can be stocked without warning light on the dash. You need the car plugged into a Star diagnosis system.

98 MBC43 AMG

THANKS MAN FOR THE INFO I WILL LET U NO WHAT IT WAS THANKS AGAIN

RPB

Sounds like CPS but check codes too, gl w/ that.

Finally not a thread about the 5spd trans.

98 MBC43 AMG

hey guys my car started up ran for 5mins and put in drive wit out pushing gas it rolled on its own but when i hit the gas it shut off and wont turnover again. i tryed everything yall said from cps put it on the machine coder nothing **** up battery tested still give out 900 cranks. anybody got any other suggestion plus thanks in advance guy.

DRBC43AMG

Guess you have no option than to give it to a workshop and get some professional help

98 MBC43 AMG

thanks friend

MarcusF

I agree with Hoontastic. How old is the battery? A day over 4 years and I'd toss in a new one without a second thought.

98 MBC43 AMG

hey guys it was my fuel filter and i brought it new three months ago so i put a new fuel filter and fuel pump cost me $320 for both. shes back to running like a beast all over again. the fuel pump was the original part so i jus change it with labor $420 THANKS FOR THE HELP YALL

KJI3jflarryfe93

great it worked out for ya.
driving your car is addictive

always use MANN or MAHLE fuel filters, top notch quality
and 4 the rest of the car stick with HQ branded parts,

DRBC43AMG

If I understand correctly, the filter was changed 3 months ago. If it was clogged again, I guess you have a large amount of muck in the tank. That probably needs a good flush and clean, otherwise you are going to have the same problems soon....!

98 MBC43 AMG

yes thats correct but how do i go abt getting the gunk outta the tank

KJI3jflarryfe93

drain that sucker, and suck it out