Thread: Intermittent loss of power / stalls on idle

Hi,

Have you tried unplugging the MAF and see if there is any improvement? That would tell you.

Other reasons: Missing due to poor coil packs/HT leads need replacing/Vacuum leak somewhere? Not sure about that last one.

Cheers, Jerry

Misfire at higher temps suggests leads and coils.

Thanks Jerry.

I didn't think to unplug the MAF due to a problem I had last year.... I did however unplug the MAF. I just drive into town and back which is about a 20 km round trip. Didn't have any problem at all. The car drove smoothly. So I then plugged the MAF back in and went for another drive, which was also smooth. No issue at all.

It generally happens more so when the car is warm, I don't recall driving the car at night time in the last month since the problem started, so I am wondering if the fact it is currently cooler means I didn't see the problem.... It is the first time it hasn't happened. Or did unplugging the MAF clear or re calibrate something??? I guess I will see on the drive home tomorrow afternoon.

The problem I had last year was with water. I replaced the MAF and now I am wondering if I needed to. After heavy rain I drove through about 1ft of water (a little too fast) getting home from work, the car then started running very rough and I couldn't drive faster than 20kmh. I actually had to put the car in low range jus to get up our street and driveway. I thought the MAF had been damaged due to a little water going into the air intake. The car would not run any better with or without the MAF connected. I replaced the throttle position sensor and the MAF. At first the problem didn't appear resolved, after about 30 seconds of idling on the new MAF the car then started running smoothly again. Perhaps water had got into somewhere else and just happened to clear up....

I will drive the car tomorrow with the MAF connected, when the problem returns I will disconnect the MAF and see what happens...

Originally Posted by ballbag

Misfire at higher temps suggests leads and coils.

It defiantly appears to happen/worsen towards the end of the drive in the afternoon. The temperature gauge stays at the same consistent temperature, however it would defiantly be hotter around the engine bay.

I would almost bet on a coil pack with a cracked housing. It started when you drove in water which got into the coil pack and gave your problems. It has since dried out but the crack is expanding under heat which is causing the spark to short out. The other possibility is dodgy HT leads. For the couple of dollars they should be replaced anyway after the years . HT leads do break down yet are mostly forgotten about at service time!
Cheers Scott

Thanks for all the input. I will replace the leads and coil pack. Would anyone recommend a particular brand of leads and where to purchase from online? I have had trouble even getting an air filter locally, I bought the last one on eBay. I will look on eBay for a coil pack. Does anyone know of a good Australian source for rover parts that will send promptly to Qld? Or is eBay my best bet?

Plenty of places in QLD handy to us British Offroad at Forest Glen, Gold City landrover in Gympie, MR Automotive in Redcliff, All are good and will post and just have a look at the vendors on Aulro too.
Cheers Scott

I have ordered two coil packs and a new set of leads. Booked in with the mechanic for Tuesday. The coils are not is the most friendly location.....