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MG MGB Technical - Engine very intermittent cut out
Three times now while I have been driving, luckily on quiet roads, my mgb gt has cut out on me. That is everything stops for a second and then carries on as normal, it seems like the car is switched off for a second and then carries on. I have had the car running and twiddled battery wires, wire to the engine and coil and stuff and this doesn't make it stop like it had done when I was driving. Any clues anybody? Thanks Andrew |
A R Woodhouse |
I had a similar problem on my '74. The connector to the ignition switch - that is, the plastic block at the end of the wires - had a bad connection. So the power to the entire ignition switch would cut out, doing much as you say. Of course, this is one of a million possibilities. You would do well to see what else cuts out with the motor, and what else stays powered. That would help isolate the problem circuit. |
Matt Kulka |
I have had this problem on two MGB's. On both it was the connector to the ignition switch that was the culprit. However, fixing it is another matter. I ended up splicing and soldering several connections. Since I parted out one car and am keeping the other, I decided I would not try replacing connectors. John in Music City |
John Lifsey |
I've just run into the same problem. It's like a split second shut down of the whole system. From the past threads in the archives I've decided that it is a problem on the low tension side of the ignition due to the tach dropping out when the engine stall. I'll start there and hope that it's something as simple as a loose or dirty connection. It could be anywhere from the ignition switch to the coil and distributor. I'm going to start chasing it down tonight. |
Brad Batchelor |
mine did the same today after some spirited driving, first time i asumed it was incorect carb float levels, second time noticed the taco was go up and down iradicaly, so asumed low tenshion fault. It hasnt done it since. Had a trip to the MG B Hive near wisbeach today, great people and seem to no what there talking about. ended spending �159 on midget bits and �400 on the . Hope you sort your problem out soon, there aint nothing worse than an intermitent fault. MC |
M C Lovell |
Sorted mine out last night. Cleaned and reconnected LT wires at the coil. The connection on the negative side was a little sloppy. A little cleaning and tightening seems to have fixed the problem. |
Brad Batchelor |
This thread was discussed between 27/05/2004 and 28/05/2004
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