hello there.
have recently bought a 1990 ford sapphire cossie 4x4 and am having a ball in it, only problem that i have with it is that when i go full boost or when i am behind some dick goin 5km down the main street of town the car develops a major misfire, the revs go crazy (like the throttle open a little bit, hovers around 3,000rpm) and when i go full boost it will try and launch me out the windscreen, which is really not a good way to get out of ya car, came to a climax a couple of weeks ago when the car stuttered like hell then died, sat on side of road cranking car for a good minute or two, with foot hard on the firewall, it was coughfing like an old man then fired into life with a bang and flames comin out exhaust, then drove fine, have asked a few fellow cossie owners if they had same problem, one guy said he did but went to stage 2 and it went away, any help would be great

cheers hadyn bruce
tauranga new zealand

 

sensor problems mabe, crank sensor for instance could possibly cause this, its probably worth replacing the lot just to save a load of hassle in the future

 

As above, could well be a sensor problem - but also pull apart and inspect the engine management loom connectors in the engine bay as these regularly cause issues due to water/damp ingress.

 

any smoke out the back during this mate?

could be over fueling?

 

turned out to be the crank angle sensor, was holding by onl;y three maybe four strands of wire have replaced and goes like a cossie should
cheers for the help
hadyn