Jay88 Posted August 12, 2013 Share Posted August 12, 2013 (edited) Hi Guys, Firstly, I apologise for acting so desperate, honestly I am... I have loved Skylines my whole life, saved up a long time to buy a non turbo R24 25GT on my P plates... I will stop boring you guys and get to the problem: (I am sorry in advance if I have posted in the wrong area also) Problem: MOST of the times I slow down (while braking), or coming to a stop, the REVS in my car bounce, and the engine tries to stay alive, it fails, and the car stalls. I can restart the car in one go which is followed by BLACK smoke (which I guess is indicating excess fuel burning). This will only stay for a few seconds. When I take off, there is a bit of a uneven acceleration. When I accelerate, no issue, just when I am braking or slowing down, revs bounce up and down, car stalls. Mechanic Actions and Repairs: The mechanic did the following (I did SELF research and understood he did as much as he could) 1. Repaired Vacum Leaks 2. Cleaned Throttle Body 3. Replaced Choke 4. Adjusted Throttle Sensor 5. ECU scan = No Errors 7. Fuel Pump checked fine 8. Fuel pressure at idle and running is fine 9. Fuel Filter cleaned (SENSORS READ FINE, BUT SOMEONE SUGGESTED THIS MIGHT BE THE ISSUE and needs replacement) 10. Air Mass Filter cleaned For 3 days it was fine, and again the car started to act up as I was driving around on the 4th day. Mechanic again had a look, adjusted the throttle sensor a bit and everyone is clueless. I am a student...and I work full time.... without a car, I need to take unpaid hours off to attend classes... I would be extremely grateful if someone can point me in the right direction. I did all self research and now just lost and frustrated. Thank you in advance. Edited August 12, 2013 by Jay88 Link to comment https://www.sau.com.au/forums/topic/430147-urgent-help-required/ Share on other sites More sharing options...
MBS206 Posted August 12, 2013 Share Posted August 12, 2013 What air filter do you run? Is it an oil coated air filter? If it is, replace with a normal paper style one, and clean the AFM again with CO Contact Cleaner. Link to comment https://www.sau.com.au/forums/topic/430147-urgent-help-required/#findComment-6967203 Share on other sites More sharing options...
Jay88 Posted August 13, 2013 Author Share Posted August 13, 2013 Hi mate, Firstly thank you for your reply. Appreciate it very much. I am not much of a mechanic and not sure what the air filter I use is. However, i remember once a mechanic banged the air filter with his hands (the mass air filter in the engine) and the car kinda started smooth. But the sensors read no errors. Link to comment https://www.sau.com.au/forums/topic/430147-urgent-help-required/#findComment-6967526 Share on other sites More sharing options...
niZmO_Man Posted August 13, 2013 Share Posted August 13, 2013 Not much help, but it might point you in the right direction. Okay, I saw a couple of things that doesn't sound right. 3. Replaced Choke - Your car doesn't have a carburettor, so there is no "choke". What you would look at in regards to this is the coolant temp sensor (two pin plug near the thermostat housing, yellow I think). Not really relevant to your issue though. 4. Adjusted Throttle Sensor - You usually don't need to do this. Is your car automatic? 9. Fuel Filter cleaned (SENSORS READ FINE, BUT SOMEONE SUGGESTED THIS MIGHT BE THE ISSUE and needs replacement) - You don't clean the fuel filter, you replace it with a new one. I forgot the exact price, but I think they go for about $25. 10. Air Mass Filter cleaned - I'm guessing this is the air filter? Throw it in the bin and replace with a new one. Paper air filter (Ryco A360) go for $10-15 dollars. I can think of two things: 1. AFM - the air flow meter (on the air box) is playing up (clean with contact cleaner as mentioned). Might need solder fix (search in the how-to section), or replacement with a known working one. 2. IAC or AAC - auxillary air or idle air control valves on the intake plenum. Usually you take them out carefully and clean them up. I think they is a guide in the how-to section. Does it run fine when it's cold? Link to comment https://www.sau.com.au/forums/topic/430147-urgent-help-required/#findComment-6967757 Share on other sites More sharing options...
ZRBE Posted August 13, 2013 Share Posted August 13, 2013 Maybe the BOV. Maybe not but I had this problem with my car. Everyone so far has said it's most likely the blow off valve venting too much air to atmosphere. Link to comment https://www.sau.com.au/forums/topic/430147-urgent-help-required/#findComment-6967768 Share on other sites More sharing options...
Kinkstaah Posted August 13, 2013 Share Posted August 13, 2013 That is true, but this car is a non turbo so it won't have a BOV Link to comment https://www.sau.com.au/forums/topic/430147-urgent-help-required/#findComment-6967821 Share on other sites More sharing options...
StevenCJR31 Posted August 13, 2013 Share Posted August 13, 2013 ^^ the turbo versions dont have (factory) BOVs anyway Link to comment https://www.sau.com.au/forums/topic/430147-urgent-help-required/#findComment-6967856 Share on other sites More sharing options...
mungy Posted August 13, 2013 Share Posted August 13, 2013 ^^ the turbo versions dont have (factory) BOVs anyway um what?.....yes they do......lol Link to comment https://www.sau.com.au/forums/topic/430147-urgent-help-required/#findComment-6967923 Share on other sites More sharing options...
ZRBE Posted August 13, 2013 Share Posted August 13, 2013 ^^ the turbo versions dont have (factory) BOVs anywayThe turbo versions DO have factory BOV's?I bought a factory rb20det BOV. Sorry didn't even see it was an N/A.. Link to comment https://www.sau.com.au/forums/topic/430147-urgent-help-required/#findComment-6967924 Share on other sites More sharing options...
StevenCJR31 Posted August 13, 2013 Share Posted August 13, 2013 (edited) ^^ no you didnt buy one. .the factory RB20 DET has a gas RECIRCULATION valve on it Edited August 13, 2013 by StevenCJR31 Link to comment https://www.sau.com.au/forums/topic/430147-urgent-help-required/#findComment-6967928 Share on other sites More sharing options...
mungy Posted August 13, 2013 Share Posted August 13, 2013 ^^ no you didnt buy one. .the factory RB20 DET has a RECIRCULATION valve on it Are you hi? the R32, R33 AND R34 all have recirculation BLOW OFF VALVES......... Link to comment https://www.sau.com.au/forums/topic/430147-urgent-help-required/#findComment-6967931 Share on other sites More sharing options...
StevenCJR31 Posted August 13, 2013 Share Posted August 13, 2013 no, not high you maybe tho for calling it a bov Link to comment https://www.sau.com.au/forums/topic/430147-urgent-help-required/#findComment-6967933 Share on other sites More sharing options...
mungy Posted August 13, 2013 Share Posted August 13, 2013 no, not high you maybe tho for calling it a bov Thats because it is a bov? Blow Off Valve???????? And yes it is a recirculation type????????? as the other type is called atmospheric Link to comment https://www.sau.com.au/forums/topic/430147-urgent-help-required/#findComment-6967939 Share on other sites More sharing options...
StevenCJR31 Posted August 13, 2013 Share Posted August 13, 2013 not what the factory calls them please add more question marks as you arent getting your point across Link to comment https://www.sau.com.au/forums/topic/430147-urgent-help-required/#findComment-6967942 Share on other sites More sharing options...
ZRBE Posted August 13, 2013 Share Posted August 13, 2013 not what the factory calls them please add more question marks as you arent getting your point across You sir, are a tripper.. Recirculating or not.. It is still a Blow Off Valve. Link to comment https://www.sau.com.au/forums/topic/430147-urgent-help-required/#findComment-6968032 Share on other sites More sharing options...
StevenCJR31 Posted August 13, 2013 Share Posted August 13, 2013 well no, its not a blow off valve otherwise it would be called that, youd know if i was a tripper or not as i did buy the drugs off you Link to comment https://www.sau.com.au/forums/topic/430147-urgent-help-required/#findComment-6968137 Share on other sites More sharing options...
iseekool Posted August 13, 2013 Share Posted August 13, 2013 Check your brake booster, could be stuffed causing a vacum leak when braking - therefore stalling. Should NOT have had to adjust the throttle sensor IMHO - that's just masking the actual issue. Change mechanic quick smart - to be quite honest his troubleshooting methology seems bit dodge. Link to comment https://www.sau.com.au/forums/topic/430147-urgent-help-required/#findComment-6968180 Share on other sites More sharing options...
StevenCJR31 Posted August 13, 2013 Share Posted August 13, 2013 you say the car blows black smoke when you get it running again, could the plugs be fouled from unburnt fuel? i know its a different engine (RB30E) but i had the same sort of issues you have, i got it sorted but i needed to change spark plugs to getting it running sweet again Link to comment https://www.sau.com.au/forums/topic/430147-urgent-help-required/#findComment-6968194 Share on other sites More sharing options...
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