2 months of no car :: HELP PLEASE

[Zyros]

Hey, ive posted like.. 3 topics with no luck so far

Okay, when cold the engine runs fine (ae92 fxgt)
When warm, it starts to jerk foward (like its missing) but its the engine cutting in and out very quickly, its gets worse and worse to the point where you are un-able to drive the car no more..

I have done the following:
Switched the ECU with another.
New dizzy Leads
New Dizzy
New Sparkplugs (which are now red??)
New fuel filter
Replaced Coil
Checked timming (its fine)
Switched the MAP sensor
Switched the ignitor

Any other idea's?!?!
Injectors maybe? Fuel pump, if so how do i check these two for faults rather than replacing it first.

Help.. me.. please?

Edit: When its cuts in and out, the Needle on the Rev counter jump up and down, up and down

[deaf_rattle]

check alarm

[RedMist]

If it runs fine, cuts dead for a second or so my bet is either on a bad critical (ECU, injectors, ignitor, etc) ground or the ground wire from battery to chassis.
As the car jerks forward it grounds the contact again. A wrattle will shake it loose.

Have you checked the ECU codes?

[Zyros]

Yup, No codes...

ill try grounding the Battery to the chassy manually?
ECU works fine as ive replaced it with another, and same problem occurs.
Switched the injector around with gordon77's FXGT, same problem.

[gepsk8]

sounds like a bad earth or feed, check gearbox earth,body,efi earth some where on the head i think. then feeds, battery termals clean, bolt next to it where the starter lead,main fuses are bolted, then check earths on inside fusebox on drivers side earths, fuel pump relay earth next to the ecu. have u change that relay by the way? how many k's pm me.

[Zyros]

Okay, i tried earthing the motor but no luck, but i now notice that theres water comming out the exhaust?
Could this mean anything.

Havent changed the relay.
PM sent.

[IH8TEC]

headgasket?

[deaf_rattle]

headgasket?

i wouldnt have thought a bhg would cause a car to want to stall and cut out?
when my supra blew its gasket, it ran on 5 cylinders, was just running quite lumpy

[Zyros]

headgasket?

Wouldnt a BHG cause the car to run badly even when cold?

[Zyros]

Bump a T

[badidas]

yo is the car cold when waters coming from the zorst mite be just moisture if not then yea probably a headgaskit check ur water and oil

[Ae92typeX]

when you say new dizzy, do you mean dizzy cap or whole distributor?

By the sounds of what you have done I expect you have done the dizzy cap- sometimes they can get a hairline crack and cause misfires and bad running...not usually stalling however.

Just do a TK test for the head gasket- but as above, you get moisture/condensation dripping out. untill the car is warmed up. Obvously if the car is using coolant its an area of attention though.And, often they just cause bad running or overheating (or less sometimes).

Have you made sure all the earths for the ecu are good as well also.

Plugs are that colour from runing octane booster or similar is assume?

I doubt it, but I wonder if there is a dodgy wire in the loom which is either shorting, or broken.Pretty unlikely, but not impossible. (but thats just a thought- dont go swapping the loom)

[badidas]

yea still could be the ecu reason for having no codes its like asking an insain person if there sain or not

[Caveman]

He swaped the ECU with mine, which is fine

Only other essential sensor you haven't replaced is the cam angel sensor. Heat soak into the CAS may be screwing with it a little. Other one is TPS but its not essential and shouldnt be causing the problem. Having said that might as well check it.

If you're feeling keen rip the loom out of the car, its not hard and with it out of the you can accuratly check all the wires. If I were in this situation i'd to a continuity test on all the essential wires.

[deaf_rattle]

what makes spark plugs go a reddy colour?
they shouldnt be doin that after 1000kms
anyone?

[Zyros]

Thats what they look like after 1000KM or so, i replaced the spark plugs last month thinking this was the problem.. obviously not.

[TrouserFxGt]

Only other essential sensor you haven't replaced is the cam angel sensor. Heat soak into the CAS may be screwing with it a little.

I would certainly look at this.

My rover had a very very similar problem. Went fine cold, not soo good hot. Cough slutter die and gauges went haywire.

Friends lancer did the same thing. Good cold but would randomly stall when hot and the tacho would go right to 10k even when the engine was dieing.

[Jebus]

Id be taking it to Papakura Auto Electrical, and putting it on the Scope they have there, for about $200 they will check it over, the scope will pick up ANYTHING that isnt quite right, such things as broken wires, TPS being out, bad compression etc.

Very highly recommended, it found a broken wire for the thermo switch on my loom, and identified which wire it was. Also on a skyline we put on the scope the other day, it found an air leak between the 5th and 6th injector.

If youve had enough of $&#$% round, id cough the $200 and get it done.

[RedMist]

The red coloration looks to be rust. However a BHG shouldn't cause an engine to stall.

My bet is there is still a critical earth problem. Not an issue with the ECU but an earth problem with ECU, injectors, ignitor, etc.

[Caveman]

Just interested how have you been driving the car? floging it or nana'ing it around