Question about Harley Davidson FXST Softail Standard Motorcycles

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PC III USB went bad after logging in errors of fuel pump IAC and crank sensor....fixed problem by replacing same PC III USB from my bike and loading correct map closest to mods made...2001 softail standard EFI 1450cc modified to 97cid computer head work and porting with proper upgraded in springs and 57 Andrews cams and upgraded fueling cam plate and high volume oil pump.....after 2 months of great riding it started missing and sputtering again. Would certain modNo adjustment was made from closest map...hypercharger with V&H staggered pipes not short or long shots...........TIA

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Please give me a better discripion I work with these all the time Did you put new cam bearings in case I want to help you OR call me 903-917-8500 Thanks MOPAR KENNY

Posted on May 22, 2011

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Posted on Jan 02, 2017

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02 grand marquis cranks but won't start,repaced fuel pump,getting fire to coils checked all fuses


Does the check engine light go out as you crank the engine? If not, if it stays on, the computer isn't getting a good crankshaft position sensor signal. Replace the sensor or fix the wiring harness. Bad sensor is fairly common

Jan 22, 2018 | Cars & Trucks

1 Answer

97 tacoma runs a few seconds and dies. will stay running if you keep foot on gas for a few mins then let off. crankshaft sensor code, replaced it but still get code. could it be iac or tps


If the code for the crank sensor comes back, then there's still a fault in that circuit. Check for sensor resistance and wiring harness short or open. Crank sensor resistance should be 1,630 -2,740 ohms when cold. TPS would not cause those symptoms. IAC could cause rough idle but wouldn't affect higher RPMs. Bad coolant temp sensor could also be part of the problem. Bad sensor = ECM thinks engine is warmer than it is and provides too lean a mixture. But fix the crank sensor issue first since that affects the fuel injectors.

Dec 04, 2017 | Cars & Trucks

1 Answer

What else could cause a no start condition turns over ok occasionally it will fire


Fire when? as you release the key? If so replace the ignition switch. If you have fuel and spark it should start unless it is way out of time or the security is set. Another thing to consider is the spark plugs. Since you have had so much gas threw the engine, they may be fouled out.

Feb 05, 2015 | Cars & Trucks

2 Answers

Fuel pump went bad fixed that now my car wont start


Now you check fuel pressure at motor with a gauge

Also check for spark & injector pulse while cranking

Dec 15, 2012 | 1996 Nissan Maxima

1 Answer

Will a bad iac cause a no start


Hi Mike,

Check to make sure you also have spark. The crank sensors on these engine are notorious for intermittent operation. A faulty sensor cuts off spark and fuel together. I would also double check for voltage to the fuel pump. If you have voltage and can not hear the pump, I would suspect a bad fuel pump. The fuel pump relay should be changed with the pump too.

Feb 26, 2012 | 1996 BMW 318

1 Answer

1999 Chrysler 300M, Dies on deceleration and at idle when warm. I can some time see the tach go to 0 rpm, with out the car actually dying I have had may suggestions, from EGR, throttle Body, fuel...


For the price of a can of throttle body, spray cleaner, I'd remove the IAC motor , clean it, and port it came out of and try it and see what happens. It sure sounds like the same old dirty IAC problems that are frequent . Normally that will cure it, and if it does, but problem re-occurs later, replace the IAC motor. (IAC= Idle Air Control.) Regulates idle under load such as AC on, turning, braking etc, to step up idle to eliminate stalling when off the throttle.86cdd45.gif

Oct 14, 2010 | 1999 Chrysler 300M

1 Answer

I changed my fuel pump and it didn't fix the problem i had. the car would start and then sometimes it wouldn't start


most likely a bad crank sensor,very common on the front side of engine block by the oil filter,,,,fuel pumps rarely went bad on those cars,crank sensor like $115,

Feb 21, 2010 | 2004 Saturn VUE

2 Answers

Vehicle died while driving it, replaced the fuel pump, it started and then died again, will not start


fuel...bad fuel...Sorry to say it but someone has sold you bad fuel and there may be water in your furl system...good luck

Nov 11, 2009 | 2004 Hyundai Santa Fe

2 Answers

03 flhtcui coming to stop eng died , restarted but would not idle under 1000 rpm


Mine was having this problem, I found the Battery cables loose. I guess it needs more voltage then the engine puts out under 1000rpm. Tightened + and - terminals.. Problem went away.

Nov 08, 2009 | 2003 Harley Davidson FLHTCUI Electra Glide...

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