Info on fuel trims
#27
This can cause all these problems
I remember when jpc first tuned it air fuel on idle on wide band showed me 13.6 to 14.2 now on idle it's showing 14.8 to 15.2
Fuel pressure was always 55 on idle now it's showing 52 to 53
I remember when jpc first tuned it air fuel on idle on wide band showed me 13.6 to 14.2 now on idle it's showing 14.8 to 15.2
Fuel pressure was always 55 on idle now it's showing 52 to 53
Last edited by JimC; 05-11-2014 at 08:30 PM. Reason: multiple posts of one sentence minutes apart - just trying to build post count?
#28
It makes sense. As your fuel pump gets weak, less fuel goes to the engine. This makes the O2 sensors read lean, causing your fuel trims to go way positive (in an attempt to correct the lean condition).
Last edited by edwin108; 05-09-2014 at 06:20 PM.
#29
Ok on idle it sounds like its has a little low burp in the mufflers
What do you suggest I do
What would you do if it was your car
Someone told me it's intake vacuum leak it does this also and causes fuel trims to rise also
What do you suggest I do
What would you do if it was your car
Someone told me it's intake vacuum leak it does this also and causes fuel trims to rise also
Last edited by JimC; 05-11-2014 at 08:31 PM. Reason: multiple posts of one sentence minutes apart - just trying to build post count?