That sounds encouraging. Did you test the old air flow meter to see if it was duff or just in need of adjustment? Testing is easy enough with a digital volt meter, you can check CO trim and air flow. Also, don't forget with a later catalyst engine like yours should be, once warm, the ecu ignores...

Vac advance doesn't do much at idle but if the vac advance unit is shot you essentially get an inlet air leak which can upset the way the engine idles. Also, a duff vac unit will mean throttle response is slow because you done get the right amount of advance to pick up engine speed off idle...

Why would you want carbs? Don't give up on it. The EFI is not complicated. Search this section for possible checks and tests I promise at one time or another I have posted how to investigate pretty much the whole system. You need to remember misfires can be ignition or efi, sometimes deciding...

Guys, you can adjust a throttle pot. You can slightly enlarge the mounting holes with a needle file so you can achieve the small amount of movement required to adjust it. As I have suggested before, get in to the V8 section and do a search, I have posted on efi and ignition checks and fixes.

Two things maybe to look at 1: vac advance - is it working, or is there a vacumm leak on the inlet side somewhere. 2: get the dvm out and check your throttle pot for base voltage setting then also check scaling. As I think may have been suggested, might be worth checking your ignition timing...

Hello down there!! I see there is almost a heartbeat here. Whats with all these sprogs!! Wow how things change. I was just reminiscing about some of the adventures we had way back when this thread started, the people who have gone but not forgotten and those who have faded away. I miss the...

Jump over to the engines part of the forum and get in to the V8 section and do a few searches. Assuming you have hotwire injection I have posted various checks and fixes for misfires over the years. HTH

If the viscous coupling goes you get issues on tarmac. AFAIK a '94 LSE will have traction control that operates on the back wheels only, the abs system monitors wheel speed and applies the brakes to gain traction so it sounds like the system was operating as intended and the limiting factor was...

I think Discool is on the right line. Depending on which carbs you have, maybe look at popping the tops off and checking the diaphragms are in one piece, if the needles can't rise properly then you will have all sorts of funny running, also check ignition timing.

Removing the air con on a classic doesn't affect the PITA getting to the resistor pack. It was a while ago when I did mine but pretty sure there is no really viable option than remove the bonnet, then the scuttle and then you can swap the resistor pack which takes about 2 mins!

If it is stuck stepper it might rev to about 2k. I can't see how it could go higher if the throttle butterfly is closing properly. If you suspect stuck stepper I think I would be inclined to suggest you take off and clean the plenum and ram housing, while you're about it, check the throttle...

No, swapping them over won't allow it to start because if one is faulty you'll remove power from the fuel pump or from the ECU. Both need power for the engine to run. Pull the relays out and rig up a couple of test leads and put power on them and check for switching. The relays failing is not...

3AM MAF can be checked/tested using a digital volt meter. Do this first. The later 5AM air flow meter should be alright to use. I can confirm that it is possible for the ECU to have a fault that means it doesn't read the air flow meter in which case you will need a replacement ECU. Also, is your...

Before you jump in to code readers and diagnostics I would recommend learning to use a digital volt meter to check the EFI components and the ignition system. As for a code reader, search for Ecumate, great piece of kit imho.

Absolutely! My '91 breezes the emissions test, passed again just last week. You would need a noticeable engine/injection and/or ignition problem not to pass the basic emissions test but no way can you get the emissions to meet catalyst test limits, I tried just for a giggle and was close but...

An ignition problem could cause a lambda problem but there would be other running problems. The OP doesn't say if there is a notable misfire or stumble or even if it idles well or otherwise so it is (like so many) a bit of a needle hunt in the proverbial haystack. I would have to admit that...

If I understand what you have said, I think you have an O2 sensor problem and it is likely you have replaced loads of bits unnecessarily. I know you say you have new lambda sensors but have you checked they are actually working? The Lambda 100% trim is the clue. I recently helped a guy with a...

For what its worth I've had my '91 RRC for about 9 years now. It has been abused but it keeps going. Rust is the biggest issue, look carefully inner wings, A post, B post and C post. Check rear cross member, boot floor, front footwells. Check the electrics work. As for on road manners, never...

Dunno if this will help answer the question https://www.landyzone.co.uk/land-rover/time-for-surgery.296902/ but as already said, not really a difficult job but are you sure you need to do it?

I think it would be quite involved. I would think the whole heater box needs to come out and be swapped. Also, I think you need to look at the ECU for the fuel injection because the A/C load is supposed to cause the ECU to raise the idle speed slightly. Additionally, the A/C condenser fans need...