I have put about 200 miles on this project since I got the fuel injection installed but I seem to have a problem.

it runs awesome!! Incredibly smooth and I love not having to worry about shifting into and out of lock up and overdrive manually like i did with the carb setup plus it’s like a race horse on the freeway, it wants to cruse at 75 mph !! And I don’t have to push it to go that fast

according to the info on the DRB;

left bank idle adaptive memory........+0 usec
right bank idle adaptive memory......+128 usec

left long term....-1.4%
right long term...+2.7%

left adaptive memory factor....-1.4%
right adaptive memory factor...+2.7

also I have my fuel pressure adjusted to 47 psi.....too high ? Too low ? Service manual says 35-45 psi but every br truck I have ever checked was 47 psi unless the fuel pump was going bad

what do guys think?
( I’m using the term “guys” as a generic term, I don’t want to insult any lady experts out there!)


This is a 1979 dodge motorhome with a 1995 BR truck 360 v8 with heavy duty emissions


viperdave

 

How old, and what brand O2 sensors?

That +128 is the max it can do.... Something ain't quite right there.

 

Yea! That’s what I figured, the 02 sensors are new, so are the fuel injectors and all the other sensors

well I think the only ones I didn’t change were the charge temp sensor, trans temp sensor, and I have an original crank sensor, it’s off a way old magnum, it’s all plastic but works fine so I’ll leave it alone

02s I think are bosch, I’ll have to find the box but I have read here that they are not the best. Who makes a good 02 sensor?




viperdave

 

NTK or Denso makes great O2 sensors that our trucks like.

 

These trucks don’t seem to like Bosch O2 sensors.
NGK/NTK work well.

 

Ok that sounds good, I’ll get them

what do the readings say? Is the right bank running lean according to the 02 sensor?

 

Yep. The PCM is absolutely DUMPING gas into the right bank, to compensate for something...... I am truly amazed it hasn't set a code or three.

 

Update,

swapped out the o2 sensors for NTK same problem

left idle adap memory +0
right idle adap memory +128

left long term-1.6%
right long term+4.9%

the only thing I can think of is possibly an injector on the right bank May not be spraying properly and causing a lean out condition making the comp richen out the right bank

ill swap the injectors from right to left bank and left to right then if the reading swaps banks I’ll have narrowed the problem to 4 possible injectors.

Any other advice you guys have would be great

oh no check engine light


viperdave

 

Ohm test your injectors when they are hot. See what ya get.

 

Ok got it

what should they be?