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Ca18DET wont idle and wont rev

Started by Prolowtone · Jun 9, 2012 · 13postsSMF 2010–26

ProlowtoneJun 9, 2012, 7:05 pm · #1

It seems to rev up to 1500 to 2000 rpm then it starts to act like it is hitting a limiter. The ECU was giving a code for the MAF, but it now gives nothing but code 55 (all clear)... Anyone have a clue as to what could be causing this?

IggyEGuanaJun 9, 2012, 9:49 pm · #2

dont trust the codes too much. its very early self diagnostic technology. use the ca18det fsm and function test the MAF per the preocedure in the troubleshooting section.

ur gonna wnat to start looking for another MAF

ProlowtoneJun 10, 2012, 1:59 am · #3

we tried his MAF and mine. also tried both of our ECUs. The shop he went to a shop and they also tried a MAF... its running a new walbro 255, New plugs, Timing is good aswell.... Gonna try my TPS on his motor to see if that solves it. :? The shop didnt know WTF was going on hahaha

sideways_s12Jun 10, 2012, 6:28 pm · #4

Fpr your gonna need a new one to run the walbro I had this same problem the fuel pump is over running the stock fpr so get yourself an after market one ....

nismo_200sxJun 10, 2012, 11:46 pm · #5

my walbro 255 works just fine on my ca18det with the stock fpr never had a problem

sideways_s12Jun 11, 2012, 3:59 am · #6

Well I did so that shows every motor is different....

nismo_200sxJun 11, 2012, 1:57 pm · #7

true but i wouldn't assume his fpr is bad. test test test is how you find out.

sideways_s12Jun 11, 2012, 3:06 pm · #8

Well I made the assumption based on the symptoms he stated and it was the exact thing thing mine was doing when I swpped to the walbro... But I see your point....

ProlowtoneJun 12, 2012, 11:56 pm · #9

It now idles, Mike played with an adjustment screw on his throttle body. Still wont rev

nismo_200sxJun 13, 2012, 12:36 am · #10

i'll bet $20 bucks it's the TPS or Idle Air Control

RoofJun 13, 2012, 12:43 am · #11

I think it's the battery.  I had that same problem with my ca18det when my battery was a super shitty one.  Once I replaced it with a new one it never did it again.

sideways_s12Jun 13, 2012, 2:29 am · #12

Take a look at the tps like nismo said

ProlowtoneJun 13, 2012, 3:40 am · #13

Ill bring mine over to him on the weekend as i was thinking the same thing. (TPS)

Roof on 12:43:02 AM / 13-Jun-12I think it's the battery.  I had that same problem with my ca18det when my battery was a super shitty one.  Once I replaced it with a new one it never did it again. 
Battery is fine, New and relocated. everything works just fine outside the fact it wont rev