starting problem on cq

andya · 27-04-14, 02:11 PM

I have a problem that has been steadily getting worse for the last 2 weeks or so. I will fire up in the morning, 1st time, straight away, I drive say to a petrol station, fill up, restart, it wont! I leave it 5-10 mins, turn the key, hey presto it fires straight up. Today I drove down to the coast, stopped, parked up, switched it off. Went to fire her up, nothing. Waited 10 mins, turned the key, it fired straight up.

Any ideas? When it fails, it comes on, but immediately the revs drop, and it stalls.

moonwatcher · 27-04-14, 03:11 PM

I had a similar situation, try the cold start relay probably sticking, remove and re-insert

Daveymaclad · 27-04-14, 04:55 PM

I had a hot start problem with my UR when I first got it. Turned out to be something to do with the fuel pump if I recall (back before I was active in getting oily myself!)

andya · 27-04-14, 06:36 PM

Thanks dave, moonwatcher and ken, at least I've got things to look at.

andya · 27-04-14, 06:52 PM

Quote:

Originally Posted by moonwatcher

I had a similar situation, try the cold start relay probably sticking, remove and re-insert

Whereabouts is the relay? Not listed in the haynes or bentley book? Many thanks. Andy

jamiecoysh · 27-04-14, 06:54 PM

had the same problem on my 2.3e and it turned out to be metering head fault

BIGGYIN · 27-04-14, 07:37 PM

Had a similar problem,turned out to be fuel pump relay.
When it cut out,I'd have to wait about 15 minutes before it would restart.

andya · 25-10-14, 07:18 PM

This problem is getting worse and worse, so is the next issue to get sorted!!

Where will I find the cold start relay please

msh · 25-10-14, 07:55 PM

It's good that we can guess that we're talking about KV engine...

There's no "cold start relay" - there's only switch which turns on cold start injector when starter motor is running. The rest of enrichment is provided by control pressure regulator.

andya · 25-10-14, 08:03 PM

Thanks for the reply msh. Yes its the kv engine. I want to eliminate the simple things first. Any thoughts you might have would be much appreciated.

27-04-14, 03:11 PM	#2
moonwatcher 4 ring whore! Classic Audi Club Member Join Date: Jul 2008 Location: Barrow in Furness, Cumbria Posts: 2,049	I had a similar situation, try the cold start relay probably sticking, remove and re-insert __________________ Coupe Quattro 1985

27-04-14, 04:55 PM	#3
Daveymaclad 4 ring whore! Classic Audi Club Member Join Date: Feb 2009 Location: Bursledon - Southampton Posts: 2,575	I had a hot start problem with my UR when I first got it. Turned out to be something to do with the fuel pump if I recall (back before I was active in getting oily myself!) __________________ 2008 RS6 avant SOLD 1988 UR Quattro

27-04-14, 06:36 PM	#4
andya Senior Member Classic Audi Club Member Join Date: Aug 2010 Location: Hampshire Posts: 1,149	Thanks dave, moonwatcher and ken, at least I've got things to look at. __________________ 1985 Coupe Quattro 1986 Coupe 1.8 weber carb 1987 Coupe 2.2 GT

27-04-14, 07:37 PM	#7
BIGGYIN 4 ring whore! Classic Audi Club Member Join Date: Mar 2009 Location: Merseyside Posts: 7,976	Could be? Had a similar problem,turned out to be fuel pump relay. When it cut out,I'd have to wait about 15 minutes before it would restart. __________________ q90 B2 Type 85 - q90 B2 Type 85-PROJECT-ABY 20vt KARL. Injection is nice but I'd rather be blown

25-10-14, 07:18 PM	#8
andya Senior Member Classic Audi Club Member Join Date: Aug 2010 Location: Hampshire Posts: 1,149	This problem is getting worse and worse, so is the next issue to get sorted!! Where will I find the cold start relay please __________________ 1985 Coupe Quattro 1986 Coupe 1.8 weber carb 1987 Coupe 2.2 GT

27-04-14, 06:54 PM	#6
jamiecoysh Grown up member Join Date: May 2013 Location: Torquay, Devon Posts: 119	had the same problem on my 2.3e and it turned out to be metering head fault

25-10-14, 07:55 PM	#9
msh 4 ring whore! Join Date: Jun 2008 Location: Rucava, Latvija Posts: 3,816	It's good that we can guess that we're talking about KV engine... There's no "cold start relay" - there's only switch which turns on cold start injector when starter motor is running. The rest of enrichment is provided by control pressure regulator.

25-10-14, 08:03 PM	#10
andya Senior Member Classic Audi Club Member Join Date: Aug 2010 Location: Hampshire Posts: 1,149	Thanks for the reply msh. Yes its the kv engine. I want to eliminate the simple things first. Any thoughts you might have would be much appreciated. __________________ 1985 Coupe Quattro 1986 Coupe 1.8 weber carb 1987 Coupe 2.2 GT