360 Modena- hesitates off idle

I dont want to come across bad but dont try to diag something if you dont have a decent understanding of engine managment. Throwing parts at something is just gonna make you nuts and more confused. AKA MAFs and 02s i cant see why it would have needed 4 02s let alone one. What ever it is doing it will get worse. A shop with and SD2 needs to look at data and if any numbers look out of order. Im in CT and have and SD but im done triing to get any work out of this site. Just dont waste your time throwing parts at something and any mechanics that work that way its not good practice and costs more in the long run than paying for good diagnostics.

 

I agree Adam, it's a fools errand to diagnose and repair without proper diagnostic eq in order to get the data and information needed to figure out and solve the problem. sure there's common problems that have similar symptoms that one can go "yep sounds like" but it still in everyone's best interest and pocket book to take it to a shop with the proper equipment.

I feel that drawing a line in the sand and say starting with around 1992 and forward requires the proper diagnostic equipment to properly maintain these vehicles is not out of line, there's lots of the older and historic Ferrari's that don't require that but do require one that has experience with them. it's an unpopular msg but diagnostic repair over the net just isn't possible on the new vehicles where everything that could be learned and is needed is at the shop where they have the tools.

I guess no matter what, the response of "take it to the shop" is never going to go over well. I get it from the stand point of DIY's, nothing wrong with it, but the learning curve and cost of equipment is far greater than anything you'd spend going to the shop.

 

Take it to the dealer, tell them the symptom, and let them figure it out.

 

That make sense and not to pick on you, would have been helpful in the first post. The frustration shops and knowledgeable techs on this site face is the barrage of how do I fix 'X' without having to spend any money? reading and responding to posts takes time and there is no compensation for it, but is offered out of kindness. at certain point it gets abused and honestly outside of dead simple things there is no possible way to diagnose these cars without physically having in front of you and connected to appropriate diagnostic tool to read the computers.

I think most would be amazed at the amount of information in the computers that doesn't make it to the "scan tool", many problems are delt with by doing real time readings of sensors etc.. to check running values. and there lies the rub, diagnostic time can be short or it can be loooooong, you never know. how does the shop bill for it and when do they decide to eat it? this is the trade off with more and more computers in vehicles today. replacing the part is the easy job, knowing which part to replace....that's the real work.

 

+1

I have a certain timeframe within which I feel that I should be able to get a read on the problem. These cars have to be analysed fully because of so many things interacting, then I can go on to the visual and physical diagnosis stage. When I get stuck, I rerun the numbers, maybe several times and do some outside research. I have to believe in my own diagnosis before selling it to the customer. Often the hours are way more than charged.

 

hello,i have run into a few 360s with hesitation issues,i have seen bad mass air flow sensors,does it have (lean errors) in left or right bank ecus?,inspect the mass sensors for any oil residue,oil in sensors with ruin them,this is where i would start looking,if its only one bank,you can swap them side to side,to see if errors follow the sensor,hope this helps

 

Could be a MAF. Could be a blocked cat. Could be an inlet gasket. Could be many, many things. Diagnosis using the correct equipment is the way forward!

 

+1 The SD2 will give you all the answers.