PA inspection and tuning questions
- Thread starter tlundjr
- Start date
Can there be codes when there isn't a CEL? I did have to have the fuel pump replaced already. Could that have something to do with it? Could it be because when its tuned it is requiring more fuel coming from the injectors, which is causing the issue?? Is the injector cleaner from autozone even worth trying?
Yes, there can be codes that do not set a CEL.tlundjr said:
The fuel pump replacement was for the NoStart condition?
Yes, tuning will place heavier demands on the injectors (at heavy throttle), which will reveal weaknesses that would otherwise be well concealed when stock. Couldn't hurt to run some Techron or BG 44K through the gas tank, but be prepared to replace injector(s) if there is indeed a problem.
Pull the codes with the tuning device, see what it tells you. Do a datalog. Then try cleaning the MAP sensors with MAF cleaner, and datalog again. That would be a nice, simple fix
SHOdded said:Yes, there can be codes that do not set a CEL.tlundjr said:
The fuel pump replacement was for the NoStart condition?
Yes, tuning will place heavier demands on the injectors (at heavy throttle), which will reveal weaknesses that would otherwise be well concealed when stock. Couldn't hurt to run some Techron or BG 44K through the gas tank, but be prepared to replace injector(s) if there is indeed a problem.
Pull the codes with the tuning device, see what it tells you. Do a datalog. Then try cleaning the MAP sensors with MAF cleaner, and datalog again. That would be a nice, simple fix
The fuel pump decided to go when I was driving home from vacation in July, Started and ran fine until I got on the highway and then died and couldn't get it started. local dealership did the warranty work. Would the injectors be covered under warranty? If not something I could do myself? I will check for codes over lunch. I can also do the datalog, but since i'm pretty new to the tuning scene, not really sure what i'm looking at or looking for. Could a bad injector have caused the fuel pump to go?
Nope a bad fuel injector should not affect the fuel pump. Yes, fuel injectors are covered under B2B & powertrain & emissions warranties.
http://www.ford.com/resources/ford/general/pdf/2013Warranty.pdf
You CAN do injector replacement yourself, given you are "handy" and can follow R&R and safety instructions You can run crude tests on them, but not really comprehensive studies. That is the pro's arena.
When datalogging, we are looking at lamda, oxygen sensor voltage, fuel pressures, and fuel trims (to name just a few items) to see how the fuel injection/ignition/emissions control & feedback system is behaving.
http://www.ford.com/resources/ford/general/pdf/2013Warranty.pdf
You CAN do injector replacement yourself, given you are "handy" and can follow R&R and safety instructions
You can run crude tests on them, but not really comprehensive studies. That is the pro's arena.When datalogging, we are looking at lamda, oxygen sensor voltage, fuel pressures, and fuel trims (to name just a few items) to see how the fuel injection/ignition/emissions control & feedback system is behaving.
So I have my inspection scheduled for next Friday, How would I go about telling them I think there is an issue with or to look at the injectors? I prefer doing things myself, that way if I screw it up I only have myself to blame, plus I worked at a dealership and ever since then I will NEVER take my car to a dealership for any type of service unless I have to. When I am looking at that stuff in the datalog, is there anything in particular I should be looking at? spikes, drops, etc?
Well, it's gonna be difficult, but tell them the symptoms you are experiencing. Under NO circumstances, refer to anything regarding a tune, having returned the SHO to stock for the inspection/dealer visit. Maybe say that "these symptoms are occurring sporadically, but seem to be gaining in frequency. I have heard about fuel injector failures on the SHO and am worried they could end up ruining the catalytic converters, or worse."