Vtec solenoid, still got my cel 21

rick82 · Post by **rick82** » Tue Apr 28, 2015 8:14 pm

Hi

I posted a while ago regarding an intermittent cel 21. I have tried everything I can think of and what people have suggested and still I can't find the problem.

I've tried replacing the solenoid, running a new wire from the ecu to the solenoid, although the wire seemed fine as there was continuity from ecu to solenoid wire (harness side). I've changed the oil, cleaned the screens but still getting the same cel.

Could there be something else which could be throwing a cel 21? Cause I'm stumped

My original post...

http://www.ludegeneration.co.uk/honda-p ... 13815.html

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Tue Apr 28, 2015 9:08 pm

Have you followed through the fault finding tree in the service manual for that code?

rick82 · Post by **rick82** » Tue Apr 28, 2015 10:22 pm

Yes I ran a new wire from pin a4 to the solenoid so I'm guessing that really only leaves the ecu?

rick82 · Post by **rick82** » Thu Apr 30, 2015 1:54 pm

Could a bad vss throw a cel 21??

rick82 · Post by **rick82** » Wed Jul 29, 2015 9:22 pm

Or anything else anyone can think of???

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Wed Jul 29, 2015 10:15 pm

Has the problem ever gone away, or always stayed there?

Whereabouts are you?

Post by **Drax** » Thu Jul 30, 2015 9:51 am

if the timing is out, could that cause the error?

rick82 · Post by **rick82** » Thu Jul 30, 2015 10:26 am

The problem just started one day. i have searched and searched and out of ideas of what could be causing it. The only thing i can think now is the ecu.

I live in snodland in kent the car is at my work which is in bow, london. I haven't driven it for 8 months now as i needed to do some work on it ready for its MOT and i use the work van most of the time but that's set to change so just want to get it running right again.

yesterday i started it and let it ran for a while and after about 15mins the light came on. Most of the time the light was coming on when at slow speeds in stop start traffic but on the motorway at a constant speed it doesn't?

Post by **Drax** » Thu Jul 30, 2015 10:36 am

valve clearances maybe? wurlycorner is the mechanic not me, im just trying to think from experience...

Post by **NafemanNathan** » Thu Jul 30, 2015 10:45 am

I'd suggest trying a known good ECU before anything else.

Lude Generation

Vtec solenoid, still got my cel 21

Vtec solenoid, still got my cel 21

Re: Vtec solenoid, still got my cel 21

Re: Vtec solenoid, still got my cel 21