my engine rpm only dropping and not holding constant, HELP!!

BlitzMekenzie

hey my sr20 det engine rpm only dropping and not holding a steady RPM and cutting off, it usually idels at 1000 some rpm but now it dropping to about 500-0 and cutting off, there are times it idels good and then there have its days when it drops its idel and cut off, anyone know what might be the cause of this problem?? oh and it recently start to happen, about 1 week now and b4 it was good, any advice or anyone know what might and how to solve this prob, any advice will be greatly appreciated, thanks..

slimshiney · Posted: Fri Jun 26, 2009 6:42 pm Post subject:

what do you mean by "dropping" is it revving up an down....black smoking ? check the minor things b4 assuming bigger stuff..your idle switch sticking?.....does it work well above the 1000 rpm mark?

Victory_Specification · Posted: Fri Jun 26, 2009 6:45 pm Post subject:

whena last you change the spark plugs? either that or probably the distributor

dregz · Posted: Fri Jun 26, 2009 6:56 pm Post subject:

could it b the throttle body??? Confused

BlitzMekenzie · Posted: Fri Jun 26, 2009 9:23 pm Post subject:

what do you mean by "dropping" is it revving up an down....black smoking ? check the minor things b4 assuming bigger stuff..your idle switch sticking?.....does it work well above the 1000 rpm mark?

^^^^^^^^^^^^^^^

yes its revving up and down, no black smoke. some times it does rev up and down between the 1000 rpm mark down and other times its good.

BlitzMekenzie · Posted: Fri Jun 26, 2009 9:25 pm Post subject:

i didnt check anything as yet, it just recently start to happen so i just decided to ask if anyone had that prob b4 so i can narrow down what to check first

BlitzMekenzie · Posted: Fri Jun 26, 2009 10:43 pm Post subject:

sleepertercel · Posted: Fri Jun 26, 2009 10:45 pm Post subject:

well could be a range of problems, but the easiest to check might be the tb...clean out the valve and idle switch and see what happens.

D_bodyguard · Posted: Fri Jun 26, 2009 11:47 pm Post subject:

Well multiple stuff....

1. trottle body
2. Air flow sensor
3. plugs and wirs
4. Timing (but mostly not )
5. Vacume lines can have ah break in one of them causeing it to flucate !!!

check these thing before going any further ...might find the problem in front yh eyes !!

janfar · Posted: Sat Jun 27, 2009 3:31 am Post subject:

I had a similar issue with a SR20de. It was a vacuum line with a small split on the end.

xtr_12 · Posted: Sat Jun 27, 2009 3:43 am Post subject:

slimshiney · Posted: Sat Jun 27, 2009 11:25 am Post subject:

check vacuum lines if not...I had a similar issue...turned out to be a bad maf.... try a swap on the maf sensor with another...det # should 53j01.....or just service d dam car Laughing

buzz · Posted: Sat Jun 27, 2009 11:31 am Post subject:

stop pressing the gas pedal erratically Neutral

slimshiney · Posted: Sat Jun 27, 2009 11:38 am Post subject:

^^^^^^