| Author | Message | ||
| J R K (Kenyon)
Member Username: Kenyon Post Number: 655 Registered: 10-2002 |
The car is a 348 TB 1990. only done 10,000 miles. | ||
| Steve Magnusson (91tr)
Intermediate Member Username: 91tr Post Number: 2078 Registered: 1-2001 |
I'm not that familiar with "Bosch Motronic" (nor want to be  ), but generally these (with O2 sensor) injection systems have some way of running open-loop when cold (analagous to a "no feedback" K-Jet) and then run closed-loop around the O2 sensor output when the temps (water/exhaust) come up. Running well cold (open-loop) is not a bad sign as this says most of the major components are quasi-healthy. I know it's not much specific help, but you either have some flaw (sensor/wiring connection) goobering up an input signal to the ECU(s), or the ECU(s) is toast, or the thing(s)/wiring on the output side that the ECU(s) is trying to control have a problem. Try an internet search on "Bosch Motronic" to see if you can find information on its open-loop vs closed-loop operation -- just a thought... | ||
| Luuk Uiterwijk (Luuk__annet)
Junior Member Username: Luuk__annet Post Number: 71 Registered: 7-2002 |
Now and then I had a similar problem after cleaning the connectors on the power modules and the spark plugs the problem never occurred again. Luuk | ||
| J R K (Kenyon)
Member Username: Kenyon Post Number: 653 Registered: 10-2002 |
Its basically a few minutes after start-up from cold. The engine starts to surge up and down (fast and slow idle) and eventaully its once to cut out altogether. Any ideas. | ||
| Steve Magnusson (91tr)
Intermediate Member Username: 91tr Post Number: 2076 Registered: 1-2001 |
Do you mean 5 minutes after every start-up or 5 minutes after cold start-up? If from cold start-up, there has to be some transition in the injection control system from cold to not cold operation. | ||
| Mark Collins (Markcollins)
Member Username: Markcollins Post Number: 329 Registered: 7-2002 |
Air con compressor kicking in? | ||
| J R K (Kenyon)
Member Username: Kenyon Post Number: 652 Registered: 10-2002 |
what is it ??? and why ?? |