Surging while driving....

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Surging while driving.... - 2/6/2008 8:45:07 PM    yellow240d   Posts: 18 Joined: 11/15/2007 Status: offline I was driving down the road tonight. and my 240d starts surging, got out, checked to make sure my linkage was good, i had put about 6 gallons of fuel in 20 minutes earlier, just doing some regular checks, changed my fuel filters about 5k miles ago, im really unsure. my car has 365k miles on it. Most everything is original. exception of clutch, battery, alternator, and some suspension work. aside from that ive had no problems. I would check the airfilter, but i designed and built a coldair intake approx. 1k miles ago. Im honestly all out of ideas, Soon i will be doing a 3.0 TD swap out of a  82' 300sd. I just need to keep my 2.4 alive for now....any advice is greatly appreciated. _____________________________ I love my classics, just not the 0-60 in twelve miles. Post #: 1

RE: Surging while driving.... - 2/7/2008 2:14:46 AM    ForcedInduction Posts: 858 Joined: 5/20/2006 From: Federal Heights, Colorado Status: offline Likely the cruise control having a mind of its own. Disconnect the CC linkage from the actuator and see if the problem resolves itself. If that "cold air" intake you made consists of a tube with a K&N style cone filter on the end then it is NOT a cold air intake but a hot air intake. The stock air filter assembly is a TRUE cold air intake and has more than enough airflow capacity for your engine and will filter far better than any cone filter. These engines are 100% mechanical. Even if there was more airflow through the engine from your intake then you would not gain 1 single HP from the engine. All it does is decrease fuel economy from the hot air and make the engine louder. _____________________________ 1980 240D 3.0VNT 222K Miles. OM617.95, GT2256V VNT turbo, 4-speed manual, 3.46 diff, 15mm rear swaybar, ALDA removed, no EGR and Amsoil by-pass oil filter. Currently 107HP and 195lb/ft of torque at the wheels. www.youtube.com/Turbo617 (in reply to yellow240d) Post #: 2

RE: Surging while driving.... - 2/7/2008 9:28:27 AM    yellow240d   Posts: 18 Joined: 11/15/2007 Status: offline my "cold air" is designed the same way as the factory, all of the bolts on the factory air cleaner broke off in a matter of 2 days, i was unable to find the replacement bolts. my engine is not any louder, and i still use about half of the factory parts. just i could not stand the ratteling from the air canister bouncing off the intake manifold... the cruise control has been unhooked the whole time ive had the car.. forgot to mention that part. _____________________________ I love my classics, just not the 0-60 in twelve miles. (in reply to ForcedInduction) Post #: 3

RE: Surging while driving.... - 2/8/2008 6:49:16 AM    cycleboy   Posts: 140 Joined: 1/21/2008 Status: offline Since your most recent change to anything in the car before the surging started was adding fuel, that's what I would check first. Perhaps you put in gasoline by mistake or hit the bottom of the seller's tank and got some water. Change your filters and run through your tank then refill.  (in reply to yellow240d) Post #: 4

RE: Surging while driving.... - 2/8/2008 7:53:48 AM    yellow240d   Posts: 18 Joined: 11/15/2007 Status: offline ill try that...its probably a good idea to go ahead and get new filters on there anyways....my clear one looks like it has a fair amount of debree...does anyone know of an additive of somesort that would help me to get rid of the algea and what not that could be in the system?? im looking to keep it good, i will want to have an extra motor which would be the one that i am running now...that way when i get my 617, ill be able to play with and see if the machine shops can play with it, actually make some reliable horsepower... we do alot of custom grinds, rods, fixing to experiment with injector flow on mine after i get this all figured out... thanx for your help.. shaun _____________________________ I love my classics, just not the 0-60 in twelve miles. (in reply to cycleboy) Post #: 5

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