Idle issue - Page 2

m1santhrope · Jul 29th, 2021, 20:39

The battery was changed to a Lucas just as a precaution. I tested it but had no idea on its age.

The fuel pump and filter are now new and we are changing the MAF sensor tomorrow.

Laird Scooby · Jul 29th, 2021, 20:44

Quote:

Originally Posted by m1santhrope

The battery was changed to a Lucas just as a precaution. I tested it but had no idea on its age.

The fuel pump and filter are now new and we are changing the MAF sensor tomorrow.

Is the new Lucas battery a calcium one and was the old one a calcium one too?

m1santhrope · Aug 11th, 2021, 21:27

Problem starting, poor idle could it be the RSR?

Laird Scooby · Aug 11th, 2021, 21:36

Quote:

Originally Posted by m1santhrope

Problem starting, poor idle could it be the RSR?

If the RSR was playing up it wouldn't run. Stop looking in the wrong place, try the meths as previously advised, if that doesn't work then consider refitting your original MAF and AICV.

Rversteeg · Aug 12th, 2021, 10:03

As you have recently changed the battery, are you sure the battery terminal connections are correctly tightened again? Nothing else dislodged while taking out the battery.
Did you check functioning / setting of the throttle position switch? The ECU stops controlling the idle speed as soon as you press the throttle pedal and the TPS opens. If the TPS would open without you touching the pedal the engine speed would drop back to the basic setting of 500 rpm.
I check my TPS by very slightly touching and immediately letting go of the throttle pedal. The engine idle speed then drops slightly to regain 800 rpm again within a second or so.
Rob

TonyS9 · Aug 12th, 2021, 17:10

I'd be thinking more an air leak, or ignition problem. Get some plug lights and check it in the dark.
Spray WD40 around the injector seals in inlet gasket. Also check all the hoses connected to the manifold, rubber will be pretty old now if you haven't replaced it.
Maybe check the injectors for leaking, pull off the manifold and prime the fuel system.

Aug 12th, 2021, 10:03	#15
Rversteeg Master Member Last Online: Yesterday 20:18 Join Date: Feb 2006 Location: Amersfoort (NL)	Battery connections, TPS As you have recently changed the battery, are you sure the battery terminal connections are correctly tightened again? Nothing else dislodged while taking out the battery. Did you check functioning / setting of the throttle position switch? The ECU stops controlling the idle speed as soon as you press the throttle pedal and the TPS opens. If the TPS would open without you touching the pedal the engine speed would drop back to the basic setting of 500 rpm. I check my TPS by very slightly touching and immediately letting go of the throttle pedal. The engine idle speed then drops slightly to regain 800 rpm again within a second or so. Rob

Jul 29th, 2021, 20:39	#11
m1santhrope Junior Member Last Online: Aug 21st, 2021 11:18 Join Date: Mar 2021 Location: Bury St Edmunds	The battery was changed to a Lucas just as a precaution. I tested it but had no idea on its age. The fuel pump and filter are now new and we are changing the MAF sensor tomorrow.

Aug 12th, 2021, 17:10	#16
TonyS9 Premier Member Last Online: Apr 9th, 2024 21:44 Join Date: Jul 2009 Location: Holywood	I'd be thinking more an air leak, or ignition problem. Get some plug lights and check it in the dark. Spray WD40 around the injector seals in inlet gasket. Also check all the hoses connected to the manifold, rubber will be pretty old now if you haven't replaced it. Maybe check the injectors for leaking, pull off the manifold and prime the fuel system.

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