devillos Posted May 12, 2012 Report Share Posted May 12, 2012 Ok, 88 Tsi starts to sputter and miss when i see the boost going up. I have changed plugs, wires, fuel filter, dist cap. Car runs excellent excpet for when you see it building boost. At idle, you can bring the rpms all the way to 6K if you bring it slow, if you try to stomp the pedal, it starts to shutdown. You can drive it and as long as there is no boost, everything is good. Pulled the injectors to see if anything was obvious, there wasn't. When I put it back together....now it won't start. C'mon guys, I need a hand. Link to comment Share on other sites More sharing options...
trini2dbone Posted May 12, 2012 Report Share Posted May 12, 2012 check your secondary injector clip and harness Link to comment Share on other sites More sharing options...
trini2dbone Posted May 12, 2012 Report Share Posted May 12, 2012 and make sure the pulgs are goin to the right injector, if i were you is give it a couple cranks and then unplug both chlips and hold the throttle to the floor and see if it cranks and runs until the fuel is burned Link to comment Share on other sites More sharing options...
Dred_85.5_TSI Posted May 12, 2012 Report Share Posted May 12, 2012 Please don't spin the engine to 6k without a load on it. That's an easy way to spin a rod bearing. Link to comment Share on other sites More sharing options...
devillos Posted May 12, 2012 Author Report Share Posted May 12, 2012 I'll switch harnesses to make sure I got them right but I did mark them before I took them off. I know it started before I pulled the injectors (but still had the problem I am chasing) and it will run again. that sputter problem is driving me crazy. It car just isn't fun to drive when it cuts out at boost. Link to comment Share on other sites More sharing options...
trini2dbone Posted May 12, 2012 Report Share Posted May 12, 2012 what ecu do you have?? my car used to do that until i put the 89 ecu bcus they dont have the boost fuel cutt! Link to comment Share on other sites More sharing options...
devillos Posted May 15, 2012 Author Report Share Posted May 15, 2012 It's an 88 ECS. Finally got the car to start and idle. That problem was a connector of the green injector, not sure if which one that is. The very end of the tab was broken off. Secured it better with safety wire and fired right up. Stll have the cut out at boost though. Link to comment Share on other sites More sharing options...
trini2dbone Posted May 15, 2012 Report Share Posted May 15, 2012 the green is the secondary Link to comment Share on other sites More sharing options...
Stangman Posted May 17, 2012 Report Share Posted May 17, 2012 I had that problem on my 87, but I just bumped the timing and it ran beautifully. Worth a shot Link to comment Share on other sites More sharing options...
devillos Posted May 27, 2012 Author Report Share Posted May 27, 2012 this is getting frustrating. I changed out the pump and fuel filter once again but no change. The car will start and run but if I give it gas quickly it stumbles to shutdown, or once it get to 3K. I can milk it to get more rpm but once boost happens, it shuts down. HELP!!!!!!! I did the timing bump both ways with no change too. Link to comment Share on other sites More sharing options...
JohnnyWadd Posted May 27, 2012 Report Share Posted May 27, 2012 (edited) Lots of stuff could be doing it. Coolant temp sensor , timing, vacum advance, bad spark plug(s) , the stock fuel pressure regulator could be bad too.Sounds like a fuel issue or timing and bad spark at 3k rpm's Edited May 27, 2012 by JohnnyWadd Link to comment Share on other sites More sharing options...
devillos Posted May 29, 2012 Author Report Share Posted May 29, 2012 Coolant temp sensor? I never considered that one. I have fiddles with the times, made sure the Vac advanced is operating, and changed the plugs.......I was thinking the fuel regulator could be a culprit too. I am also thinking of swapping out the ECU in case there is something in there that could cause a fuel cutoff. Thoughts anyone? Link to comment Share on other sites More sharing options...
Starwolf Posted May 29, 2012 Report Share Posted May 29, 2012 I take it you do not have a wideband on the car? I have seen about 10 stock injectors go to crap...so all the 4 cars I have worked on I made sure to clean the fuel system and order NEW injectors. Link to comment Share on other sites More sharing options...
rcm Posted May 29, 2012 Report Share Posted May 29, 2012 sounds like secondary injector is dirty or not firing.Check the clip with a noid light to see if the ecu is sending a signal. Link to comment Share on other sites More sharing options...
devillos Posted May 30, 2012 Author Report Share Posted May 30, 2012 I have pulled out both injectors and tested them with a 9-volt source. Both were "clicking" right along. A guys helping me, listened (putting a screwdriver on the injector) to them and said they were working. Does this tell me the ECU is sending the signal? Is a noid light a fancy name for a 12V test light? The car was working fine once upon a time then this problem just happened all of a sudden but for a while now the car would "buck" under very heavy acceleration in first and second. Link to comment Share on other sites More sharing options...
devillos Posted May 30, 2012 Author Report Share Posted May 30, 2012 I appreciate all the help guys. Im sure you guys understand the frustration. I am even willing to start replacing parts but where to start? Link to comment Share on other sites More sharing options...
Starfighterpilot Posted May 30, 2012 Report Share Posted May 30, 2012 Pull the injectors and send them to witch Hunters for cleaning and testing. Here is a link--- http://www.witchhunter.com/index.php4 Your secondary injector is dirty. You might also want to do a TPS sweep & reset. ;) For What It's Worth. KEN Link to comment Share on other sites More sharing options...
Zone Posted May 31, 2012 Report Share Posted May 31, 2012 (edited) Change grounds, that may help in some situations, check the lower intercooler hoses and make sure they are tight. Definitely check your timing. Also, have you checked for codes ? Edited May 31, 2012 by Zone Link to comment Share on other sites More sharing options...
devillos Posted June 1, 2012 Author Report Share Posted June 1, 2012 I am so ignorant about this car, I did not realize I could pull codes. tell me how? Link to comment Share on other sites More sharing options...
Starwolf Posted June 2, 2012 Report Share Posted June 2, 2012 Seriously get your injectors sent off...if it isn't the injectors i would be SHOCKED. How many times have you seen spark plug wires go bad? If you suspect spark plugs...just check them. Codes will tell you something but you could still have problems and show no codes. I just think most stock injectors these days are crap. Very few of them run 100%Even if they click they could still be dumping a ton of fuel or starving your engine of it.Witchhunters 4tw Link to comment Share on other sites More sharing options...
devillos Posted June 2, 2012 Author Report Share Posted June 2, 2012 OK, I am sending off the injectors today. I swapped out the ECU just in case it was sending a "cut fuel" signal but nothing changed. I am going to try to reset the tps before I disassemble the TB. Link to comment Share on other sites More sharing options...
MikeMeyerhoff Posted June 2, 2012 Report Share Posted June 2, 2012 If your distributer hasn't been rebuilt, now might be a good time. The grease inside it gets old/stiff and prevents the mechanism from work working like it should to advance/retard ignition timing. It can easliy get bad enough to affect drivablity. Also, your vacuum advance passes the "suck test" hopefully? Link to comment Share on other sites More sharing options...
devillos Posted June 5, 2012 Author Report Share Posted June 5, 2012 Yes, it does pass the "suck test". There is motion with a vacuum is applied. I sent the injectors off for flow and test with WitchHunter but I am still not optimistic. Link to comment Share on other sites More sharing options...
Starfighterpilot Posted June 6, 2012 Report Share Posted June 6, 2012 What gap do you have your spark plugs set at? If the gap is too wide for YOUR engine you may have boost blowing out the spark under slight to hard acceleration. Try regapping them to 0.034" and see what happens. If you have no sputtering, increase the gap by 0.001 and boost hard again. Keep on doing this until spark blows out (sputtering) then decrease the gap back to where you did not have any. You are setting the gap to YOUR PARTICULAR engine's requirements. For What It's Worth. KEN Link to comment Share on other sites More sharing options...
Starwolf Posted June 6, 2012 Report Share Posted June 6, 2012 I am betting on injectors Link to comment Share on other sites More sharing options...
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