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| Cranking problems My car has been hesitating on cranking lately. Takes 2, sometimes 3, times to get started. (Except on cold crank--then it cranks up first time.) My first thought was the FPR, so I replaced it. Still the same problem. Any ideas? BTW, it helps when I gas it a bit when trying to crank. Thanks in advance for any help. | ||
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| NZ Benz Expert Date registered: Apr 2006 Location: New Zealand Vehicle(s): 1993 300SEL/S320 Posts: 2555  | RE: Cranking problems Might be the starter motor but as you have to give it a bit of gas, (which on a fuel injected car you should not have to) might be injectors or something to do with the fuel delivery, I dunno I am dumb at being a mechanic think I will just stick to my marketing and finance.  | |
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| NZ Benz Expert Date registered: Apr 2006 Location: New Zealand Vehicle(s): 1993 300SEL/S320 Posts: 2555 | RE: Cranking problems What is the FPR  | |
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| Nutz Expert Date registered: Apr 2006 Location: Vehicle(s): Posts: 2026 | RE: Cranking problems
^^^^^ Fuel pump relay or also can be fuel pressure regulator. I'm guessing that it's a control pressure problem.Maybe try cleaning the connections on the electrohydraulic actuator. | |
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| RE: Cranking problems Yeah, she replaced the fuel pump relay, which is associated with stalls rather then hard starts. (her old FPR was more than likely ok, sorry Ms. J…  ) A leaking or failed EHA might cause hard starts but like the FPR is mostly a stall-related issue. Until she tells us what work was done recently we won’t know. It could just be a crappy rotor or fouled plugs. | ||
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| RE: Cranking problems jdc1244 - 7/1/2006 3:38 AM It hesitates as in it turns slowly or that it turns fast but won't catch? How many miles on your car and what work was done recently before the FPR? How does it drive otherwise? Any hesitation upon acceleration, stalling while driving, and what's the econo gauge doing when starting? While we wait for the response I'll just throw this out: The cap/rotor/plugs and wires need to be in good condition. Next would be air and vacuum leaks. After that would be injectors and seals (need the miles for that). It turns fast, but won't catch. The car has 207,xxx miles. Drives perfectly otherwise--no hesitation or stalling while driving. I haven't really noticed the econo guage--I'll have a look next time. No work done before the FPR. Whaddya think? Thanks everyone for the responses. | ||
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| RE: Cranking problems jdc1244 - 7/1/2006 5:15 AM (her old FPR was more than likely ok, sorry Ms. J… ) Oh well, good to have a spare anyway. | ||
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| RE: Cranking problems jdc1244 - 7/1/2006 11:21 AM Considering the miles and what you’ve described it seems NZ Benz was right and the injectors are worn. Do you know if they’re the original injectors? The injectors are often toast by 200,000 miles. Not sure if they are the originals or not. Is this an expensive fix? | ||
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| Nutz Expert Date registered: Apr 2006 Location: Vehicle(s): Posts: 2026 | RE: Cranking problems
I still think it has something to do with the warm control pressure seeing that it fires up with no problem when cold. O2 sensor may be suspect as well,i.e it's not producing the voltage to tell the EHA to do its thing when needed. | |
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| RE: Cranking problems jdc1244 - 7/1/2006 1:40 PM Of course you’ll need to install them yourself. You are a very funny man, jdc.
Thanks very much for the info, guys. Your knowledge and willingness to share it is very much appreciated. | ||
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| RE: Cranking problems Nutz - 7/1/2006 3:06 PM
I still think it has something to do with the warm control pressure seeing that it fires up with no problem when cold. O2 sensor may be suspect as well,i.e it's not producing the voltage to tell the EHA to do its thing when needed. Sorry, I didn't get that it is staring right up cold... Ms. J, you're having hard starts hot only? If so then Nutz is right with a system pressure problem such as the accumulator. A system pressure test would still be in order to see if the EHA is leaking. Jillian80 - 7/1/2006 3:36 PM jdc1244 - 7/1/2006 1:40 PM Of course you’ll need to install them yourself. You are a very funny man, jdc.
Thanks very much for the info, guys. Your knowledge and willingness to share it is very much appreciated. Sorry again, should have said 'one must install oneself...' | ||
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| RE: Cranking problems Sorry again, should have said 'one must install oneself...' I was laughing at your suggestion that I install anything on my car. The only car-related things I can do are: check the oil, pump fuel, and....uh....and....well, that's it. | ||
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| Ed Mclass Expert Date registered: Apr 2006 Location: Nashville, Tennessee Vehicle(s): 1958 180a, 2010 GLK, 2000 G 500, 2005 SLK 350 Posts: 1215  | ||
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| RE: Cranking problems Jillian80 - 7/1/2006 6:59 PM Sorry again, should have said 'one must install oneself...' I was laughing at your suggestion that I install anything on my car. The only car-related things I can do are: check the oil, pump fuel, and....uh....and....well, that's it. How 'bout changing you own oil, could you at least take a stab at that?  | ||
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| RE: Cranking problems jdc1244 - 7/1/2006 7:05 PM Jillian80 - 7/1/2006 6:59 PM How 'bout changing you own oil, could you at least take a stab at that? ;) Sorry again, should have said 'one must install oneself...' I was laughing at your suggestion that I install anything on my car. The only car-related things I can do are: check the oil, pump fuel, and....uh....and....well, that's it. No way! That's one of the few things I can afford to pay someone to do for me. | ||
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| NZ Benz Expert Date registered: Apr 2006 Location: New Zealand Vehicle(s): 1993 300SEL/S320 Posts: 2555 | RE: Cranking problems jdc1244 - 7/1/2006 8:05 PM Jillian80 - 7/1/2006 6:59 PM Sorry again, should have said 'one must install oneself...' I was laughing at your suggestion that I install anything on my car. The only car-related things I can do are: check the oil, pump fuel, and....uh....and....well, that's it. How 'bout changing you own oil, could you at least take a stab at that? ;) I don't even do that stuff, I run to my mechanic with every little problem. I even send my car in for a check up at least once a year. | |
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lol.
