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TDI Power Enhancements Discussions about increasing the power of your TDI engine. i.e. chips, injectors, powerboxes, clutches, etc. Handling, suspensions, wheels, type discussion should be put into the "Upgrades (non TDI Engine related)" forum. Non TDI vehicle related postings will be moved or removed. Please note the Performance Disclaimer.

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Old April 17th, 2011, 17:31   #121
kooyajerms
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Finally found that fuel temp sensor. Didn't make a difference. Looks like I'm replacing the pump =(
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Old April 17th, 2011, 17:54   #122
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Upgrade opportunity! Do it right the first time and forget about it after. Install a complete ALH automatic pump (with the necessary mounting machining to fit on your 1Z), keystone mod, advance collar mod, etc. ... This would also be a perfect time to go to a New Beetle 80-pin ECU and corresponding harness to connect to the pump. Cruising shudder, if you ever had it, will be a thing of the past.
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Old April 17th, 2011, 18:09   #123
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Last time i looked i couldn't find a thread on the keystone mod and advance collar mod. Everyone treats those as secret mods.

Also what all is involved in the NB ecu/harness swap? Are you saying use an early ALH ecu?
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Old April 17th, 2011, 19:18   #124
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"seek, and you shall find"
-Google 10:1
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Old April 17th, 2011, 19:54   #125
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Not for nothing but I don't see anything in the logs that indicate a bad pump... I'd hate to see you replace the pump just for it to do the same thing when it's cold...
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Old April 17th, 2011, 23:05   #126
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Pumps already the 11mm Dave. VW remanufactured. If I were to convert, I'd move to the 2002 ecu and harness, that way tuning won't be such a slow ordeal with these chips =)

Thanks for noticing that Jason, but doubleu tf... The logging may be crap, but the idle is hunting, and going up to 3k rpms takes a lot of grunt and slight popping. It runs just like you say with the blue smoke till 100*F, the blip to 3k doesn't really resolve anything, just something I do to get the temps up faster. I'll take two videos at the same time, one from the rear, and one at the dashes.

I'd like to point to the pump considering a lot of people have been running Colt Cam Stage 2's and not been bothered with the hard running cold starts. I just don't want to lose the opportunity to replace this pump under warranty. Matt's pointing at it, and DFIS seemed convinced.

Anyone want to throw me a used 10mm or a stock cam? Not that I want to do any timing belt (equivelent) jobs in the first place. bleh.

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Old April 18th, 2011, 04:31   #127
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I'd vote for the injection pump too. I've seen similar behaviour due to a stucking control collar in a pump that was stored wrong over a longer period.

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Old April 18th, 2011, 05:11   #128
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I must have missed the part about it being under warranty.. In that case I would try another pump..

My 03 stumbles around if I try to rev it stone cold, but I think it has to do with the big cam and lower CR.. It sounds like its "loading up" so to speak.. After idling for 1 minute it's pretty good though..
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Old May 19th, 2011, 09:24   #129
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Finally an update. IP Pump replacement done.

Second 60*F morning and the missing seems to be gone, smoke is gone. Just a puff right in the beginning. Don't need to blip the pedal to make the idle stop hunting. Sits nice and steady right from the start. If I blip the pedal to 3k it will still stumble, but then again its a cold engine. Driving around though to the 100*F seems to be just fine.

It's been raining in LA, so lets see if I can remember to not park in the garage to get some even colder temps.
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Old May 19th, 2011, 09:27   #130
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60*F is not cold


try -20F
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Old May 19th, 2011, 10:05   #131
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Well I don't know how to freeze the engine for a better test =p. It's May! Luckily It's not 90* like it usually is.
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Old May 19th, 2011, 20:49   #132
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I'm happy you found the solution! Any progress with the lift pump?
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Old May 20th, 2011, 07:08   #133
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Quote:
Originally Posted by JFettig View Post
60*F is not cold


try -20F
In Southern Calif. 60*F is much on the cool side!
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Old May 20th, 2011, 09:06   #134
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Not yet Gus =(.

Been going to all these metal work shops to find a damn SS barb of some sort to replace the check valve. Either too thick or too thin. Then I'll have them test the fuel pump.
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Old May 20th, 2011, 16:25   #135
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SS barb fittings should be easily sourced. Use something off the internet if you have to, I'm a sucker for summit racing cause they are only like 30 minutes from me haha
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