Car starts, dies under load

[Stag]

Eventually got the car started with the new engine. It starts for the first 5 seconds of it starting it sounds normal, but when it's given any sort of load it struggles. I've tried spraying easy start in to the air intake but it still struggles.

I don't know if you can do this but my mobile number is 07400580163, if someone would like to see the problem I can video call them on what's app and you can see what you think ?

Cheers Louis

[Carolyn]

It's struggling for voltage.  Suggests dodgy earths and dirty connections.

You're not the first to experience this.

Another member couldn't get his car to rev after an engine-out.  Loose earth on the crank sensor. 

I advised checking that (amongst other things), he found it, voila!

Going to take quite a bit of checking, but you'll get there.

[Stag]

It's struggling for voltage.  Suggests dodgy earths and dirty connections.

You're not the first to experience this.

Another member couldn't get his car to rev after an engine-out.  Loose earth on the crank sensor. 

I advised checking that (amongst other things), he found it, voila!

Going to take quite a bit of checking, but you'll get there.

You able to video call pal ?

[Carolyn]

Would rather not video call.   

Was the harness removed from the engine? 

Have you cleaned the big multi-pin connectors?

[Stag]

Would rather not video call.   

Was the harness removed from the engine? 

Have you cleaned the big multi-pin connectors?

Mind making me a list of all electrical things to check, a lot to ask I know but would really appreciate it.

The ones that go in to the ecu, yes

[Carolyn]

I'll give it a go in the morning...

There's also two plugs that go from the engine harness to the chassis....

[Stag]

Anyone else got any ideas, I've checked all grounds and cleaned all plugs

[Carolyn]

You didn't answer my question about the harness.

You'll find that I'm often correct on this stuff. 

[Stag]

You didn't answer my question about the harness.

No, it came with the engine. I just got a friend to spray easy start in to the air intake while I press the gas. It revs up to 5k no problem. Would that still suggest earth ?
You'll find that I'm often correct on this stuff. 

[Carolyn]

Almost certainly earths.

I'll list them for you tomorrow.

They need to be disconnected, cleaned and re-connected to be sure.

My money is on the crank sensor earth... but it might be one of the others, or both...

got to cook dinner now....

[Stag]

When I hold my foot on the gas it does waves of building revs about two seconds each wave

[StuC]

When I hold my foot on the gas it does waves of building revs about two seconds each wave

I am inclined to agree with @Carolyn that symptom does sound like an interrupted signal. Could easily be caused by a dodgy earth.

[Stag]

When I hold my foot on the gas it does waves of building revs about two seconds each wave

I am inclined to agree with @Carolyn that symptom does sound like an interrupted signal. Could easily be caused by a dodgy earth.

I've cleaned all of the grounds, just to double check, there is

One on the crank sensor
On in the fuse box
One on the starter motor
Two on the engine next to the oil cap
One on the negative battery terminal
One coming from the positive terminal harness
One on the top of the engine

[jonbill]

No fault codes?

[Stag]

Nope no codes or lights at all

[jonbill]

When I hold my foot on the gas it does waves of building revs about two seconds each wave

I am inclined to agree with @Carolyn that symptom does sound like an interrupted signal. Could easily be caused by a dodgy earth.

I've cleaned all of the grounds, just to double check, there is

One on the crank sensor
On in the fuse box
One on the starter motor
Two on the engine next to the oil cap
One on the negative battery terminal
One coming from the positive terminal harness
One on the top of the engine

When I hold my foot on the gas it does waves of building revs about two seconds each wave

I am inclined to agree with @Carolyn that symptom does sound like an interrupted signal. Could easily be caused by a dodgy earth.

I've cleaned all of the grounds, just to double check, there is

One on the crank sensor
On in the fuse box
One on the starter motor
Two on the engine next to the oil cap
One on the negative battery terminal
One coming from the positive terminal harness
One on the top of the engine

Is there really an earth in the fuse box? Why?

Also pretty sure there isn't an earth in the battery positive terminal harness. It's all for the battery positive terminal. I do have a vague recollection it's possible to separate it and it can look like something to earth, but it isn't.

[Carolyn]

When I hold my foot on the gas it does waves of building revs about two seconds each wave

I am inclined to agree with @Carolyn that symptom does sound like an interrupted signal. Could easily be caused by a dodgy earth.

I've cleaned all of the grounds, just to double check, there is

One on the crank sensor
On in the fuse box
One on the starter motor
Two on the engine next to the oil cap
One on the negative battery terminal
One coming from the positive terminal harness
One on the top of the engine

When I hold my foot on the gas it does waves of building revs about two seconds each wave

I am inclined to agree with @Carolyn that symptom does sound like an interrupted signal. Could easily be caused by a dodgy earth.

I've cleaned all of the grounds, just to double check, there is

One on the crank sensor
On in the fuse box
One on the starter motor
Two on the engine next to the oil cap
One on the negative battery terminal
One coming from the positive terminal harness
One on the top of the engine

Is there really an earth in the fuse box? Why?

Also pretty sure there isn't an earth in the battery positive terminal harness. It's all for the battery positive terminal. I do have a vague recollection it's possible to separate it and it can look like something to earth, but it isn't.

Jonbill is correct.  No earth on the fusebox.  No earth on the positive terminal or harness (that would be a dead short) No earth on the starter either (just switching current and main current).  One major earth on top of the gearbox.

[Stag]

When I hold my foot on the gas it does waves of building revs about two seconds each wave

I am inclined to agree with @Carolyn that symptom does sound like an interrupted signal. Could easily be caused by a dodgy earth.

I've cleaned all of the grounds, just to double check, there is

One on the crank sensor
On in the fuse box
One on the starter motor
Two on the engine next to the oil cap
One on the negative battery terminal
One coming from the positive terminal harness
One on the top of the engine

When I hold my foot on the gas it does waves of building revs about two seconds each wave

I am inclined to agree with @Carolyn that symptom does sound like an interrupted signal. Could easily be caused by a dodgy earth.

I've cleaned all of the grounds, just to double check, there is

One on the crank sensor
On in the fuse box
One on the starter motor
Two on the engine next to the oil cap
One on the negative battery terminal
One coming from the positive terminal harness
One on the top of the engine

Is there really an earth in the fuse box? Why?

Also pretty sure there isn't an earth in the battery positive terminal harness. It's all for the battery positive terminal. I do have a vague recollection it's possible to separate it and it can look like something to earth, but it isn't.

Jonbill is correct.  No earth on the fusebox.  No earth on the positive terminal or harness (that would be a dead short) No earth on the starter either (just switching current and main current).  One major earth on top of the gearbox.

I stand corrected its not an earth its the starter wire.

[Stag]

I dont really know what else I can check, Im sure ive got all earth's earthed. Starting to get frustrated as im so close

[Carolyn]

Slow down and step away for a while.

You're close.

You started with an immobiliser light on and no joy. 

You got some advice,,,

Now you're up to 5,000 rpm and a bit hit-and-miss.

It might even clear up with a bit of driving.

It's a lump of metal and wires.  It doesn't care how you feel... or not..

Getting worked up about these things doesn't help.

Zen.....

[Stag]

Slow down and step away for a while.

You're close.

You started with an immobiliser light on and no joy. 

You got some advice,,,

Now you're up to 5,000 rpm and a bit hit-and-miss.

It might even clear up with a bit of driving.

It's a lump of metal and wires.  It doesn't care how you feel... or not..

Getting worked up about these things doesn't help.

Zen.....

Can't drive it at all right now, it only gets up to 5k if I spray easy start in to the air filter

[Carolyn]

weak spark

leave it...

come back with a clear head...

[Stag]

Is it 100% a earth, not fuel injectors or air ?

[Carolyn]

You just won't slow down will you?

Not once have you said 'thanks'.....

IN THE MORNING, take the plugs out and crank the engine.  You should smell fuel.  If you do - sparks.

If you don't - fuel. 

At least, then, you'll know what you're chasing.

[Stag]

Sorry pal I do appreciate all the help I'm receiving. Just need a car to get too and from work.