Technical Cambelt & Engine light

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Technical Cambelt & Engine light

Joined
Mar 12, 2011
Messages
149
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32
Location
Heathfield. East Sussex
Hi,

Ok, had the cambelt changed recently, and I had the flashing engine light (EODB) so I did the phonic calibration fix and seemed problem solved.

But now the lights solid.

I have had a clutch replaced as well.

Could either of these trigger the engine light?

It didn't trigger once before the cambelt fix.
 
I am going back to the garage first thing and asking for fault codes and for them to look into the issue as I had no lights before then.

The car is running, ok, there is a slight judder, which could be a mis-timing issue, but tbh I drove it home very conservatively in case there was a issue.

Also the temp gauge is staying steady, not over heating at all.

I am hoping all is this is just a mis-timing issue, seems to maybe running a little rich if that helps.
 
I had the fault codes for a mis-fire, and the flashing engine light that I corrected with the phonic wheel fix.

And and U1601 code, a can error of some kind.

Garage cleared them and said run the car for afew days, if they come back return the car there.
 
erf had the faults cleared, but two days later engine light is solid again.

It's flashing as well which means it's mis-firing again it seems, I have done the phonic learn procedure.

Taking it in again tomorrow for the codes to be read.

I tried reading up on that U1601 code, but couldn't make sense of it.

Could this just be a case of new plugs, ht leads?
 
p0300 - Multiple/Random Misfire dectected

p0420 - seems to google up as Catalyst System Efficiency Below Threshold

(thread here - okay its a stilo' but it'd be the same fault code)


The Misfire is most likely caused by the cambelt timing been a tooth or 2 out
And its not quiet firing on time

And the 420 means the cat or lamba's have died, possibly as a result of perlonged misfire filling the Cat with fuel :(

Ziggy
 
Would it be cheaper to look at HT leads, coils, plugs before I replace a CAT?

I am assuming if the sensors fail that it would be recorded on the ECU?

certainly yes
might be a good idea to have an emissions test too to see how cat lambda and co are doing
most mot station s would do this for free if you know them and ask nicely
 
it passed a MOT 2 weeks ago, so I am hoping thats fine.

the fault codes are P0300 first with P0420 2nd, could the mis-fire be triggering a auto cat alarm? if the systems assuming there is partially burnt fuel in the exhaust?
 
I think I need to get the car re-timed, I had no issues until that point.

I had a clutch change 2 days after the belt, but I was seeing the flashing engine light before the clutch was done.

Issue is both garages are saying it could've been work the other did.

Seems I just need to bite the bullet and get the work re-done, I will get sparks, coils & leads done as well.

Seriously thinking of selling the car now, and driving the Micra my wife is selling.
 
erf at wits end.

I had the codes re-set but they keep coming back.

Same P0300 and P0420, the car doesn't feel as if it mis-fires.

could this be a simple timing issue as I just had the belt done?

or a ignition issue?

I am worried that the ECU may be in question, but I have no other fault codes, bar that U1601 thats never come back, and I have not had any ECU issues.

What do people think?
 
The cam belt job might have disturbed the crank or cam sensor. Also make sure the connections to ECU (and everything else) are solid.

The common ECU fault takes out the trigger to one coil so it runs on the 2 cylinders tha have sparks. New coil packs dont have any effect with the same pots missfiring. ECU repairs are about £100 plus postage.
 
the guy said the crank or cam sensor was loose ( the one at the top of the engine )

He said he fixed it back there with a bolt, could that be the issue?

Hopefully it isnt the ECU then, as it is no way running on 2 cylinders.
 
Last edited:
Cheers again White.

Some of those issues seem to fit, sometimes when idling I get a slight judder now and then, and its ignition errors I am getting.

The Tech said he "bolted" the crank sensor down as it appeared loose, with these sensors is it a case of its correct or not? or if its slightly mis-aligned can they cause mis-fires or mis-fire reports.

I was thinking it's been running a tad rich to, which appears to tie in as well.

It's booked in for Saturday so I will ask them to check these things, until then I am to worried to run it, so back to buses for me :(
 
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