fatmike

iTrader: (4)

Hey guys, after successfully timing the saph up, im stillllllllll having problems with her,

She starts up..... but when it gets hot and when you give it some revs it just drops and then tries to die. It sounds badly ill. It sounds like the timings wrong in a way but its not its all dead right. Its not the iscv thatsall already been sorted, but she is just not set right or something is broken down.... I hear alot about the phase sensor on the dizzy. could this be the problem??? In fast ford mag it was on about the 10 most commen problems, this was listed along with the CPS. Any thoughts would be great as i am starting to lose my patience with her atm
..............

kaedalin

i would suggest replace all sensors pal as most are only ten or twenty quid check ebay at moment noticed some compant selling most of them at between ten and twenty

vyper developments

Hi, before you rush out and buy sensors firstly try to set up the base idle on your car. Get the engine up to normal operating temp and then disconnect the the plug off the iscv with the engine running. If set correctly the engine should idle at around 850 rpm with all elecrical loads off. If this does not happen you will need to set the idle screw until 850 rpm is obtained. Then reconnect the iscv.

This a common problem on Cossies.

CheeRS, Mike

tabetha

The base idel needs to be set correctly but will not cause it to fag out though like this.
You must first check the CO and set to around 2.5%, it may be running very lean, does it misfire or throw black soot out when started from cold ?
Most of the problems with the CPS is more to do with the connector than the sensor itself, the female part of the connector loses it's tension on the terminals that grip the male parts pins, and you get intermittant misfires fagging out as if running out of fuel etc.
Leave running and do a wiggle test on all the connectors.
A phase sensor will work or not, the wiring on the oe ones has insulation that breaks flakes off and stops the signal, later sensors have different insulation on thw ires identified by one red, one blue wire, the red wire going to the terminal nearest the sensor, when connectedto the plug bit in the side of the dizzy body.
I would check the CPS/PHASE gaps anyway, but it is possible that it is just mixture(CO), but could be many things.
The main corrective factor for CO is the ECT, but ACT has an effect also but nowhere near as great, if ect has not been chenged in a few years I would do it anyway.
Matt Lewis 01922 692424 can supply these parts.
tabetha

JanDK

iTrader: (3)

I became alot more cleever recently.. I had this problem for 2 months and have been through everything, including wiring! I fixed my headgasket a year ago and changed EVERY singel sensor. a few days ago, I ended up with a TPS that gave a "out of scale" signal, and as I see/understand it, it made the ecu set it self on a "limp signal" and that made the car drive fine in the low rev range (on my car) of drive like shit near 4000 r/min. ... this was the end of the story... it all started exactly as you describe, and on my car it was only sometimes, later when driving in speed and in the end all time. It is ALL gone now.. changed the TPS yesterday.

This cause also a fuel economy that said 300 km and 53 litre of fuel!!!

tabetha

Sierra's don't have any limp type strategy, they are a bit to archaic for that.
TPS is easy to test with a decent digi metre that has bar graph hold function, as you will see a hole in the graph.
tabetha

xr_craig

iTrader: (2)

I had a similar problem with mine and it turned out to be the plug leads breaking down

JanDK

iTrader: (3)

Dont mean it WAS a limp.. but with the laptop connected or the FLUKE the reaction I saw on the displays looked like the ecu did like what it was told by the tps, and did something.. could be the electronics that couldnt handle the signal .. I changed it.. and the signals was ok

Just a surgestion, from what I have experienced..

fatmike

iTrader: (4)

well i took it out for the first time last night and it actually works again... , i found the problem being the coolant sensor, and maybe one of the sensors near the bulk head wasnt clicked in fully... but whatever it sure works now, all i gotta do now is grab me 803's, 3 bar, and Chip, and head off to interpro for a set up and rolling road. .

Cheers for the help guys, some of the info has been a great help.

tabetha

They do not have a LOS strategy like a modern ecu, but a extremely crude full rich setting if they spas out, so rich it will spit black soot everywhere, and kick and be a royal pain in the a**e to drive, soot the plugs and fag out soon after!!
tabetha