Started the 1995 F355B after it had been sitting about a week. When i tried to start it, it was totally dead -- like a dead battery. But the lights etc worked. Then after trying a couple times, it started up but it was on a very low idle. After it warmed up a little, i hit the accelerator a few times and and the idle went up close to normal. While driving, the "1-4" light kept coming on and off at low RPM. Quick acceleration had hesitation. I can't find any loose vacuum hoses. Anyone have any ideas.
First, charge the battery, and if it does not hold its charge, then replace it. Then let engine relearn its parameters from cold start for 10 minutes. If that does not work, look for why bank 1 is misfiring
Battery is fine. Started up without issues today. Ran at about 500 rpm till it warmed up. Then hovered around 1000 rpm. While accelerating, the car hesitates.
Did you check codes? I know different but on my 348.. that exact issue was caused by faulty rpm sensors. Mobilized reply by Dahveedem
Here's a link to check. http://www.ferrarichat.com/forum/showthread.php?t=228082 Also... i have a huge thread around similar issues. I can't say enough about Deoxit 100. Even after replacing darn near every sensor in the engine bay. Get some more details...and codes..i love the research!!@ Mobilized reply by Dahveedem
Been traveling alot for work so i finally had a chance to take the car out yesterday. After a normal warm up, the car still had the problem. I then drove it for about an hour yesterday. About 30 minutes into the drive, it all cleared up and the car is running normally. All i have done so far is snug up a vacuum line that appeared loose. Thats it. Today, the car stared up and is totally fine.
Hi there, do yourself a favor and pick up a wifi OBDII code reader; it's a small investment and when used in conjunction with your iPhone or android app I found it unbelievably helpful to monitor the goings on of the 355. Just make sure the alarm is off and the key in the ignition to read codes; I mistakenly thought my OBDII slot was not updated only to determine that it was user error.
I just went through an idle issue and stalling on one of my other vehicles. I wasn't sure what it was a few owners on a forum for that car immediately suggested cleaning the MAF and the throttle body (1 on this vehicle). I got a can of TB cleaner and MAF cleaner and cleaned both. The engine runs perfectly now and doesn't drop idle or stall anymore. I was surprised what a difference that made with no parts replacement. The MAF is just a spray. Don't touch the wires. The TB is just a solvent that you spray and wipe clean. Might be worth doing.
^ MAF is my suggestion too. No toucha da wire. My 348 did this on a long drive back from the FCA National event in 2011. I remember it vividly -- every stop light was a lesson in throttle control.
When I had my e39 M5 it was common for the MAF to cause issues that would not throw codes. Cleaning would help. Replacing fixed them. Someone figured out that one of the VW's used the same Bosch unit for 10% of the cost of the BMW unit. The use of aftermarket air filters that required oil (K&N) seemed to cause problems with the MAF sensors.
The problem has not re-appeared but the following was done: One vac hose was snugged up Cleaned Motronic connectors; air flow sensor connectors; crank sensor connectors The 1-4 light has not come on since the car stated working normally (after a long drive) Did another long drive today and all is good.
