Ignition amplifier - possible prob?

sinbrad · by **sinbrad** » Fri Aug 15, 2008 2:46 pm

Ditto, cheers

sinbrad · by **sinbrad** » Fri Aug 15, 2008 2:49 pm

Drew a blank at the scrappie. Someone had already been at the vectra and tore it to pieces. Hopefully got one on its way for testing. Have now noticed something strange, the ecu light doesn't come on when initially starting the car? I could have swore that it came on before and went out with all the rest of the lights. I hope it's not the ecu that is trout? What symptoms would I get? Would the car actually start? I'm puzzled

Phil69 · by **Phil69** » Fri Aug 15, 2008 6:46 pm

Have you checked your fuel relay? These are fairly common failures as well and will cause the ecu light not to come on....mine did this amongst its many other failures.

sinbrad · by **sinbrad** » Sat Aug 16, 2008 12:33 pm

Ok, managed to track down a guy with another diagnostic meter. He connected it up this morning and it came up with the codes -

16 knock sensor no.1 - no change in voltage
31 Eng Rpm signal (crankshaft sensor) no signal

looks like I have found the root of the problem. Would these give me the symptoms that I'm getting? Ecu light is also fixed and it was a loose fitting bulb that caused this. Have also just carried out the paperclip test and I get 3 codes - 12 (which is normal) and as above 16, 31. Luckily enough I think I have a spare knock sensor but not a crankshaft sensor will have to look? What does the crankshaft sensor look like and where is it located?

**cornishtaz** · by **cornishtaz** » Sat Aug 16, 2008 12:35 pm

I think you'll get 31 as the engine isn't running

sinbrad · by **sinbrad** » Sat Aug 16, 2008 12:41 pm

Should the engine be running or not when doing the paperclip test. If so I will nip out and do another one with it running? Also have another strange problem. Once I had put the clocks back in the needle now drops down below the zero mark when the ignition is switched on?

sinbrad · by **sinbrad** » Sat Aug 16, 2008 12:43 pm

Should have thought to ask, where is no.1 knock sensor?

**cornishtaz** · by **cornishtaz** » Sat Aug 16, 2008 12:55 pm

Have a look here

http://www.v6calibra.net/common/v6calib ... sensor.htm

Should be next to dipstick tube

sinbrad · by **sinbrad** » Sat Aug 16, 2008 2:27 pm

Cheers for that, forgot about the wealth of information on that site. I can see where it's supposed to be but how the dickens are you supposed to get at it and change it? Is it a garage job?

**tazz666** · by **tazz666** » Sat Aug 16, 2008 3:25 pm

battery off mate and thet will give you more access to the amplifier , you will also see two 10mm bolts through the battery tray, tha is if it is in the same position as the redtop

**Tim2001** · by **Tim2001** » Sat Aug 16, 2008 5:49 pm

With the rev counter you may need to manually adjust it when its plugged in

sinbrad · by **sinbrad** » Sun Aug 17, 2008 4:46 pm

Tim2001 wrote:With the rev counter you may need to manually adjust it when its plugged in

Tried doing that but it kept dropping down to where its at in the photo. Decided in the end to let it settle and removed the needle and replaced it at it's correct position. Seems to be working at the moment? Strange why it done that in the first place?

sinbrad · by **sinbrad** » Sun Aug 17, 2008 4:49 pm

tazz666 wrote:battery off mate and thet will give you more access to the amplifier , you will also see two 10mm bolts through the battery tray, tha is if it is in the same position as the redtop

Managed to get at it. But since doing the paperclip test the fault seems to be the knock sensor and not the amp. Got an amp and a coil on it's way just in case?

sinbrad · by **sinbrad** » Thu Aug 21, 2008 11:34 am

Car went into garage and is now fixed and running as it should. It was the knock sensor in the end. The cause? The guy who fitted the alternator trapped the knock sensor wire between it and the block causing a break in communications between it and the Ecu. All's well that ends well

Ignition amplifier - possible prob?

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