Home | Register | FAQ | Members List | Calendar | Today's Posts | Search |
Social Groups |
Registered
Members: 13,583 | Total Threads: 40,056 | Total Posts: 470,824 Currently Active Users: 1125 (22 members and 1103 guests) Welcome to our newest member, ofizizigu |
|
|
Thread Tools | Display Modes |
27-01-08, 06:09 PM | #1 | |
Mr Typ 43!
Classic Audi Club Member
Join Date: Sep 2007
Location: Oxfordshire
Posts: 838
|
Won't start when hot - classic Audi!
This is a classic Audi problem. My 200 5E starts fine apart from for half an hour after its warmed up. It refuses to start and then suddenly when the temp drops to a certain level is fine again. My two suspects are the warm up regulator and the auxillary air valve - both have bi-metallic strips. I also have a slight problem where the revs go up instead of down when the engine warms up - I suspect the two things are related. What should I replace first - the fuel enrichment device or the air enrichment device? or could it be something else... (btw it's not the CSV).
|
|
27-01-08, 06:24 PM | #2 |
Senior Member
Classic Audi Club Member
Join Date: Jul 2007
Location: shrewsbury
Posts: 1,172
|
hot start,
I had the same prob on my 200q, eventually changed the injectors[last] symptoms improved , they are as i am sure you know notorius for poor hot start , you could also check the injector fan switch,,this blows cold air on to the injectors, lastly and most expensive ,weak fuel pump , relatively easy to check[in line guage should do it] although the pumps i had probs with were all fairly noisey as they got more tired, best of luck, liked
the resto pics chris |
27-01-08, 07:21 PM | #3 |
Mr Typ 43!
Classic Audi Club Member
Join Date: Sep 2007
Location: Oxfordshire
Posts: 838
|
Thanks for the advice. The injectors are new and so is the pump -a weak pump is a possibility as the pump was not genuine??? The air valve is okay I think and I can't see that the warm up regulator would stop it starting all together. What about the thermotime switch??? Thanks, I know this is a boring subject!
|
28-01-08, 09:48 PM | #4 |
Mr Typ 43!
Classic Audi Club Member
Join Date: Sep 2007
Location: Oxfordshire
Posts: 838
|
Thermotime switch
I have found the problem - the thermotime switch is only delivering 4.5V. Anyone know if I can get a replacement from Audi? Would this cause a problem with warm starting?
|
Bookmarks |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
1995 Audi Coupe wont cold start!!!!!!!! | aheath55499 | Engine | 2 | 08-10-09 09:35 PM |
Audi 100 Typ 44 jump start terminals? | pimpdriver | Electrical problems | 10 | 11-02-09 08:28 PM |
why won't it start? | aeinstein | Engine | 4 | 28-01-09 10:05 PM |
audi 90 poor cold start...... | johnboy | Engine | 14 | 25-09-08 05:43 PM |