Hello, I got my F430 2005 in november, did a few rides at high RPM and really enjoyed the car. I did some fixes and repairs recently under dealer warranty : thermostat was lazy and my MAF sensors were due for replacement (errors were showing while diagnosis)... I took the opportunity of the Ferrari Recall to go to the official dealer here in Montreal and also asked them to do an accumulator replacement, as I got sometimes stuck in 5th gear and had a slow down! message (in red). Also, the car frequently was lacking power. I refuelled the carI , went for a long ride on the highway in the evening, and I still have the power issue. My car seems like running on 4 cylinders - I have NO error messages besides a temporary flashing engine light (misfire I am sure). I had a slow Down ! message on my first acceleration getting on the highway at high RPM - I did a few others and in Race mode, the car seems to have a very hard time to go beyond 8000 rpm. I put the car in sport mode to check an automatic gear change, it took it like 5 seconds to hit the rpm limiter from 8000 to 8500 rpm and switch to 4th gear. There definitely is a lack of power now, as I know my car I can tell, only issue is that there are no messages in my diagnosis besides some temporary misfires. (using the AUTEL) Also good to mention that the Ferrari mechanic and the service director took the car on driving tests and told me the car runs like a charm .... fuel pump ? spark plugs ? any other mechanical problem ? I find this very frustrating thanks
Classic symptom of not waiting for the CHECK OK screen to disappear before starting: not doing so often results the engine running on one bank. I'm making the assumption that the battery is OK because the techs didn't find an issue.
I wish it was as simple unfortunately. I am always waiting for the check light and even more… I will do more tests today. Seems like the car often misfires on the left bank when accelerating at very high RPM (8000+). when I do my diagnosis, it seems always the left bank is faulty. I am very lucky to have a call today with Flash32 hopefully we can sort out some avenues for these reccuring issues on my car.
So I went for a 20 min drive, had a hard time to push the car to 120mph, the rpm seems very hesitant after 7000rpm, then quickly got a repeated SlowDown! Red light. I pulled over and my manifolds were pretty red in a dark environment… Image Unavailable, Please Login Image Unavailable, Please Login
oh yes for sure. If a cat breaks up that could be engine trouble. Seems like so far your ok. But don't drive it
did you also get the glowing red manifolds ? had a diagnosis with my Autel, I have an error with MAF 1.1 P1093 Air Flow Rate: Plausibility Error / Electrical Circuit. Missed
because of gas smell ? no I am good so far... but I am quite sick with all these recent issues, wondering if I would have a better health with a 2008+
OP: Have your fuel pressure checked with a gauge under full load....you may have a lean condition. Check the condition of the spark plugs, perform a cylinder balance test... This is a starting point...lets see what the car has to say.
Thanks, we had a call with flash32 and suspect a defective MAF sensor (had these replaced recently) - but also good avenues to check. thank you.
Let's go thru what transpired Originally bad MAF sensor were repaired...probably caused by oil overfilled Car ran fine for a bit after replacement One misfire /one cylinder ..asked to check ignition coil , spark plugs and vacuum leak Within hours of that suggestion..all four cylinders were misfiring ..so that changed things to check ...leak anywhere from MAF to intake runners ( that needs to still be checked ) and since the car ran fine for a while ..the theory is the new MAF went bad due to oil or just defected So based on current codes and work that was recently performed ..the places to look at are : vacuum leaks including rumners , bad MAF sensors (and if so why they broke again), electrical wire issue (maybe something moved by shop while installing MAF) or lastly check fuel pump (1 St and 2 ND stage) .. The lean condition is most likely causing the red hot cats Without someone putting there hands on the actual car this as far as we can go ..I believe Sent from my moto g power using Tapatalk
Agree this isn't a thermocouple issue. Don't use the car hard until this is resolved. Did these problems exist before an oil overfill? What entailed a MAF repair? I'm suspicious of any repair to an oil soaked MAF...just replace both even if only one was soaked. Check the g/s of both MAFs - are they even, and also perform a rough calculation to check power output. If the MAF was replaced, was it genuine Bosch? There are many copies on the market unfortunately. Was the inlet manifold cleaned out? If not that could explain a second MAF problem Any vacuum leaks can be diagnosed by checking fuel trims.
Hello mwstewart, My car was stalling at low rpms, was also running very rough when starting, this problem occurred a few months after I purchased my used 2005 this winter. symptoms such as I had to use the accelerator and give gas all the time at red lights to make sure I wasn't stalling. I went to a local euro- ferrari mechanic in the country where my car is, he did a diagnosis confirming bad MAFs and thermostat codes (I now have the Autel so I can save 150$ each times...). we saw the car was low on oil, he filled it (then might has been the start of the next issues)...The car was hot, but I can't remember if it was running. :facepalm: I went in Montreal to my dealer (who sold the car to me). Under warranty they agreed to replace my two MAF sensors and the thermostat. For a weekend approx the car was amazing and running like a charm, a week after I started to see the problems, only when the car is hot, only at high RPMS. now getting worse. what you said and what Flash32 says makes totally sense... I can drive the car normally but can't beat it hard for sure... back to the dealer it is, and hopefully they will accept to replace the sensors and do a check on vacuum leaks. I can't believe I should be scared to drive a car I love. thank you
Interesting. At this point I would be inspecting the inside of the plenum chamber with a bore scope to make sure that it is free of oil. I'd also check the oil level is indeed correct. I'd also want to make sure that the coolant temperature sensor was reading correctly. It's sounding to me like the car had an original issue, and another was introduced by improper oil filling. The original issue was fixed and the second problem temporarily masked by new MAF sensors, but over time these have been contaminated with oil again - either due to a contaminated plenum chamber or incorrect oil level. Keep us updated.
@mwstewart It seems like you and I are in the same page ..was telling him pretty much what you said yesterday on the phone Let's see what happens Sent from my moto g power using Tapatalk
I am stubborn so I drove the car under 3000rpm in 6 gear to the dealer which is 140km away from where the car sits… Everything was fine and no errors. Weather was also fresher today. Thank to everyone for the tips and infos I will share to the mechanic. Hope they can fix my car soon because I want to drive the hell of it…
