ROGUE TROOPER Posted March 24, 2006 Share Posted March 24, 2006 Its a 3.5EFi and starts and runs ok, untill it gets hot (about 40mins later) then it starts to miss fire badly, so much so that I had too stop, it stalled and it would not start. But I wauted till it cooled and it started again, only too do the same thing again...... If I cant find out why, then a 4 barrel holley will be fitted Thanks all Quote Link to comment Share on other sites More sharing options...
Jon White Posted March 24, 2006 Share Posted March 24, 2006 Ignition module on the side of the Dizzy? If so thats the first suspect! Jon Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted March 24, 2006 Share Posted March 24, 2006 Yep, also try : Cold Start temp sensor at front of inlet manifold. Fuel Filter Nige Quote Link to comment Share on other sites More sharing options...
ROGUE TROOPER Posted March 24, 2006 Author Share Posted March 24, 2006 Cool thanks for the leads, will look at them all next week. Keep em coming Quote Link to comment Share on other sites More sharing options...
minivin Posted March 24, 2006 Share Posted March 24, 2006 Keep it cool all the time, only drive it up and down the river Avon Since it's heat based, as has been noted about the cold start sensor and the ignition coil amp, might be worth checking the ignition coil as well, also I've had spark plugs that break-down when they get upto a certain temperature, might be worth pulling the plugs out the spare engine and bunging them in Quote Link to comment Share on other sites More sharing options...
ROGUE TROOPER Posted March 24, 2006 Author Share Posted March 24, 2006 Ignition module on the side of the Dizzy? If so thats the first suspect!Jon Thats brand spanking new! Did this before the new dizzy. Cold Start temp sensor at front of inlet manifold. Im going to start there!! Quote Link to comment Share on other sites More sharing options...
landmannnn Posted March 24, 2006 Share Posted March 24, 2006 I had exactly the same problem. A bit of research told me the biggest problem with efi's is air leaks. I put jubilee clips on all those rubber pipes, you will notice that some of them will be quite loose when the engine is hot. Anyway, the problem went away.7 Quote Link to comment Share on other sites More sharing options...
ROGUE TROOPER Posted March 24, 2006 Author Share Posted March 24, 2006 Thats a good idea, thanks Did notice that some where loose. Quote Link to comment Share on other sites More sharing options...
jamesm Posted March 25, 2006 Share Posted March 25, 2006 Thats brand spanking new!...which would make it my number one suspect. Still got the old one to put back on?I recently had a pattern rotor arm fail within 1000 miles on my RRC, and I wouldn't have thought there's much to go wrong in one of those. Quote Link to comment Share on other sites More sharing options...
bathtub Posted March 25, 2006 Share Posted March 25, 2006 Cool thanks for the leads, will look at them all next week.Keep em coming It was the heat sink on mine all i did was use a bigger bit of alloy bolted it to it & never had a problem after that . Quote Link to comment Share on other sites More sharing options...
orange rover Posted March 25, 2006 Share Posted March 25, 2006 had the same problem, running fine when cold, misfiring when cold. thoght was ignition related, tried everthing. in the end it was the temp sensro, it was broke. changed it, everything was fine. to check, take a 30 K ohm resisitor, disconect the plug from the coolant temperature sensor and put the resistor between the two connectors. if it the runs well when hot (and badly when cold) then you've found the culprit. regards orange Quote Link to comment Share on other sites More sharing options...
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