Mark 4 Golf Idle

  • Thread starter robert1
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United Kingdom
England, Kent
Robertjh90903
hey

I no this may not be the best forum to ask this question but worth a shot, i no there has got a be a few people out there who will know đź’ˇ

well anyway, my car, a Mark 4 VW golf 1.6SR (2000 / W reg). Had a problem where when idle or sometimes just starting the revs would rise and drop and sometimes cut out altogether (this became really annoying in traffic and at the lights) so I took it to a garage where they found a problem with a lambda sensor. Seams the engine didn’t always do this it did seam ok but the next day it happened again, but seamed worse, took me 3 or 4 attempts to get it started in a car park, so I took it back. This time they cleaned the throttle body. now this has help ALOT, it seems to idle at a higher RPM (was around 900 now its 1100 ish) but sometimes it’s still dipping and rising slightly, doesn’t cut out anymore though. I have noticed fairly bad fuel consumption but I have checked the tired pressures and they were fairly low so hopefully that can help that problem slightly.

So any ideas what else can be done? I was wondering if getting the fuel injectors cleaned might help? it’s about to hit 110,000 miles and it doesn’t look like the last owner did much work to it, when I picked it up the oil was thick and black so had to be changed quick.

Thanks in advance for any help.
 
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I've had the same problem with my MK3 Mondeo, that turned out to be the lambda sensor too. Do you have a code reader? That usually pins the problem down, and they're not too expensive. It could be the EGR valve, that was also a problem on the Mondeo. We took it out and it was full of oil, so we cleaned it out and put it back on and it hasn't dropped the revs since.
 
yeh i had a code reader, the only problems it came up with where the lambda sensor and also i had a "Supply volate B+". it was a cheap reader so i dont no if that should of been followed by too high or low? but i didnt think anything of that one, think i should have?

i will check out the EGR though, never even looked into that one.
 

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