1st Aug 2001, 06:43
I've had 3 8v SRi Cavaliers and they've all had the same problem. They start fine from cold and when they are hot and haven't been turned off for long. The problem is after leaving them half an hour or so. The cause is a fault in the air control valve, which controls airflow into the induction manifold. First thing to do is take it off (unplug the lead, undo the 2 jubilee clips) and run carb cleaner through it and then WD40. You can also carefully clean the slide with something gentle like cotton buds. This very often cures or improves the problem and can be repeated. A new unit is about £200 from a main dealer and a bit less from motor factors, who often carry the part as it is a common problem.
24th Sep 2001, 08:20
Sorry, but a tendency to not start from warm is a symptom of the ECU temperature sender, located in the 8v engine by the alternator.
10th Feb 2002, 15:57
When the ECU engine temp sensor fails, it causes cold start problems as it thinks the car is hot. The hot start fault is caused by a dirty throttle body and ICV.
22nd Nov 2002, 12:52
Had my Cavalier 8v SRI about 3 months now. It's the best car I've ever had. I've a GSI Front bumper and side skirts in the garage waiting for painting. Fitted a Mongoose back box. I fitted a K&N 57i which did not greatly improve power, but sounds great. thinking about a GSI already (not that I could afford insurance.) Good work Vauxhall.
1st Jan 2003, 09:56
I mention my hot starting problems in my review (1990 CD). I've asked several 'experts' what they think the problem might be (including 'Car Mechanics' magazine) and each one has given a different answer! I have therefore decided to live with it, rather than throw money around only to find the problem is still there. Once it's decided to run, it's a sweet as a nut.
6th Jun 2003, 12:12
My 8V Cavalier SRI had warm start problems, it hunted and almost cut out sometimes, I changed the temperature sensor by the alternator and it's cured it.
23rd Aug 2003, 14:13
My Cavalier 2.0 SRi also has trouble starting when warm (fine if hot or cold) I will try the cure mentioned above, but have found that if I gradually press the accelerator the car will start. Be careful though because the car may stall and/or hunt for a few seconds if you release the throttle, best to gradually bring it back up to give the engine ECU time to adjust itself.