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Renault Laguna 2 - 1.8 16v Throttle Problem*FIXED*

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16v laguna problemfixed throttle
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#81 ·
Well the limp-gimp home mode just does not want to go away,I have been following this topic for well over a year now, yes my Lag is doing exactly what Kuldip discribes, And yes I have had all the checks possible done and still theres a problem. To me it seems Renault are just turning a blind eye to the problem, typical of the Froggs. All I do now is just live with the fact that French cars are a bag of ****. I will never buy French products again.
 
#82 ·
Hello,

Just read whole tread and wonder why nobody checks the relay that are next to battery. I had the same problem. After cleaning the contacts of this relay (first on right) the problem was solved. After year (2 days ago) problem came back. When pull off this relay and put it back everything is OK, but till next restart. This relay is simple enough, inside there is contacts to, but need to disassemble it and clean it with sand paper. When contact don't release itself, wrong information is sent to fuel system. Tomorrow i will bought new relays (will change whole 3) and gave you update. Don't spend money to change whole cabling or bought new ECU or Throttle body, the problem is in this relay.

P.S. My Laguna 2 is 1.8 16V running on LPG
 
#86 ·
does this apply to the Laguna ll 1.8 16 valve dimonique petrol, or just the IDE,mate? to be honest with you after reading almost all of the posts on the forum it seems to me we are all suffering the same problem of Limp home mode, where there is no response from the throttle peddle,engine revs between 2000 and 3000 will only drive at 40 mph to get you some place safe, stop the the car and after a short time it will be fine only to start again down the road.. do we realy know what the problem is or are we all clutching at straws???:confused::confused::confused:
 
#87 ·
Mine is a 2litre dynamique ide. The part cost me £220 and is hard to get hold of, but looking at the links i put up it all seems to make sense now.
Having it fitted Thursday so will keep you posted.
 
#88 ·
Sorry i was wrong. When i pull off the relay i restart the throttle body. This solve the problem for once. This can be done even if you pull off the cables that goes into throttle, this is easiest way (it's very difficult to pull off this relay). So the guy who say the problem is in contacts is right. I used spray against rust to spray the contacts in throttle body connection and no problem for a week. Last year i checked contacts in the ECU but it's not possible this contacts to be oxidized. But it's much realistic the contact in the throttle to have oxide.
Hope this low tech solution to have success :)
 
#91 ·
hi guys

after 2months of putting up with the wifes car as she would notdrive because of the dreaded fuel injection fault. i think i have finally got to the bottom of it. we first replaced the throttle body for a new one when the problem persisted decided to back that as it was not the cause of the problem. although must say picked up a new one for £184 inc of vat and delivery so good price.

we took off the throttle pedal pretentionmeter is adjustable on my model which is a 1.8 16v privelege. it was not lined up so adjusted it. 60miles now no problems was going 3 or 4 times in a 15 mile journey will replace it altogether if i make it to 250miles as the track inside it is worn.

hope this helps this horrible problem for some of you.


hope to have happy driving time now
 
#93 ·
Hi all. I recently saw this thread and maybe I have solution for this. No response to pedal position is caused because car is safe mode. This hapened to me on clio 1.6 16v and some other models with f4r engines. When car start to revs between 2000-4000 revs, just shut it of, disconnect battery gnd terminal and unplug throtle body, wait couple of minutes, reconnect it and start the engine. That is how i resolved my problems. It might be that you need just to clean battery terminals. :)
 
#94 ·
kuldip S Obhi said:
I have Renault laguna 1.8 16v 2002. It has an on going problem whereby after travelling about 8 to 10 miles if I stop and start the journey again, the car starts ok but after few minutes the electrical fault light comes on and the engine starts to rev betwwen 2000 and 4000 revs. and the accelator has no control over the engine speed. The car has been in the garage and they have replaced throttle body, spark plugs and the injector E.C.U. After the ecu was replaced car was ok for couple of months and now the problem have again surfaced and is getting worse. Initially problem was occuring one a month or so but now it is occuring regularly whenever and I make start stop journeys. The distance of the journey I thionk is not important but whenever the car is stopped and restarted within half an or so the problem occurs . If the car is left standing for few hours and then started it will take longer for the problem to reoccur.
I shall be greately obliged if anyone can suggest a solution.
Many thanks in advance.

Kuildip Obhi
Click to expand...
Hi. Just wondered if you had any luck solving this problem. I have the same fault on my laguna 2 1.8. I have had the throttle body and the tdc flywheel sensor with the loom replaced but the fault still comes up whenever the car feels like it revving on it's own at 2000-4000rpm with injection fault displayed on the centre screen. At a bit of a loss and can't afford to keep replacing parts willy nilly. Any help would be great. Thanks.
 
#95 ·
same as you lot revs going up to 3000 then dropping changed throttle body no luck. am driving megane 1.4 16v 2003. but am goin to try do all the things you lot said thanks for all the info.
 
#96 ·
rite am at a loss av changed throttle body compleat with sensor on side changed accelerator pedal with sensor cleaned all electric plugs checked for air holes nothing can some one please help
 
#97 ·
well mine was the alternator over charging on and off that's why revs was up and down. something to do with electrics in the motor. something to do with alternator and ecu send wrong signals to each other. so if anyone has this problem check that first.
 
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