24 replies to this topic

[krisad13]

Got in my car tonight, started it up and after a second or 2 it started sounding awfull and couldn't idle properly. I drove it a bit to let it warm up and had no power then the engine light came on. Got it home and hooked it up to opcom and got the above error code (P0303). Anyone got any ideas? It's rained none stop the last couple of days that horrible fine wet stuff. I'm afraid it's got in somewhere it shouldn't have, i've had a look at the spark plugs and they don't seem to be wet. What should i try next?

[Nelly Vx]

See if there is a local member to you who is willing to let you try their coil pack

[Blue Boy]

had same problem couple of months ago when i didnt use car for months. The rain ended up sitting on top of plugs and corroding coil pack. Take coil pack off, and try n give coils a clean, have to prise them out with screw driver. Ended up paying £160 for new coil pack in end.

[krisad13]

Yeh when i took coil pack off there was a little water around the connection, dried it off best i could b4 putting it back together but made no difference and noticed one or 2 of the connections where ever so slightly corroded. Think i'll buy some contact cleaner tomorrow and give it all a good clean, thanks for replying lads. Waterproof cover gonna be my next purchase, wife left her window open ever so slightly and had an inch of water in the footwell this morning

Edited by krisad13, 10 June 2010 - 07:25 PM.

[Blue Boy]

sounds like thats your issue. spark is probably jumping cos bad connection

[zimmer]

Spare coil pack if you want a lend this weekend - I'm in gateshead

[krisad13]

Thats good of you mate, i'll try giving it a good clean and dry tomorrow when i get some contact cleaner, if that doesn't work i'll take you up on the offer. Cheers m8y

[zimmer]

Give me a pm if needed, should be around most of the weekend

[krisad13]

nice one

[krisad13]

I just tried the coil pack kindly lent to me by zimmer. And still having the same problem, so far i've changed the coils and cleaned the plugs (which are only 2 weeks old). Anyone got any suggestions? I also noticed that my fan comes on way earlier than usual normaly it doesn't kick till she's in the 100's but now it comes on in the early 80's.

[zimmer]

Sorry to hear it. As said the coil pack should be working, as it was the injector that was the fault on mine. However I can't guarantee it - if my car had been running okay I would have tested it on mine...

[krisad13]

ha ha i just pm'd you. Well back to the drawing board i guess, when your coil pack was in the car may have sounded marginally better but that might just have been my hopefull imagination.

[Blue Boy]

only other suggestions are injector, egr valve or cam position sensor.

[krisad13]

only other suggestions are injector, egr valve or cam position sensor.

hmm, i was wondering about the injectors as when i give it some revs thats when it sounds and feels like a bag of sh!t, but when i take my foot off the accelerator and the revs drop the engine is smooth until it drops to the idle speed and then comes back again. Would this indicate faulty / blocked injectors?

[zimmer]

According to google, p0303 is a misfire on cylinder 3. Does your reader throw up any other codes? Would have thought an injector problem would bring up p0203 as well. If you need a hand changing injectors I'm an expert as of this afternoon!

[krisad13]

You all sorted now then matey? I just got a couple of new codes p0300 and p1514 not sure but think they may have been produced when i started the engine with the egr valve removed. I'm wondering whether it could be my egr valve now as when i have it hooked up to opcom and look at the measuring blocks it says EGR Valve - Inactive (obviously i had re-connected it by then). I would have thought it should be active when the engine is running!?

[zimmer]

You all sorted now then matey?

I just got a couple of new codes p0300 and p1514 not sure but think they may have been produced when i started the engine with the egr valve removed. I'm wondering whether it could be my egr valve now as when i have it hooked up to opcom and look at the measuring blocks it says EGR Valve - Inactive (obviously i had re-connected it by then). I would have thought it should be active when the engine is running!?

Not really sorted - need to get hold of a new injector yet, but the old one's are out.
EGR would cause rough idle but don't think it'd cause a misfire. Once mine's up and running you can try my EGR valve.

[krisad13]

Think your right about the egr valve discovered a test on opcom which i ran and it seemed to be fine. I've put your coil pack back on and gonna take it for a short drive and see what error code is produced. I figure if it's p0303 again then it likely to be something other than the coilpack, but if it's something else p0301, p0302, p0304. Then it could still be the coilpack and i think i'll invest in a new one. Other than that might start looking at the injectors.

[krisad13]

update, still showing p030, think i'll have a crack at whipping out the injectors and taking a look.

[krisad13]

managed to get 3 of the injectors out, and swapped 2 & 3 over to see if i would get a different error code. Unfortunately i still get the same error code p0303. Unless anyone has any other idea's guess i'm gonna have to take it to vauxhall, hope it's not my engine not had the car a month yet.