Question about Saturn SC2

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2001 sat sc2,Rpm revs high at first then goes to normal after a minute, car stalls after running for 5 to 10 minutes and has a rich fuel mixture smell

Replaced crankshaft sensor, fuel filter, everything spark related is new or cleaned and the gas gage reads empty then goes to normal after a while

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  • Saturn Master
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Coolant temp sensor tells ECU engine temp which controls fuel mix.

Posted on May 07, 2015

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Posted on Jan 02, 2017

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I've replaced fuel filter, crankshaft sensor, everything spark related has been cleaned or new


Is the vehicle a chevy Understand I can't say for sure with out actully looking the thing .
But it kind of sounds like a fuel pressure regulator the rich smell of gas is a sign that its working wright
From what you have said it is a fuel problem but its unlikely a pump problem . Was the old fuel filter clogged or restricted and what differance if any did it make after you installed the new filter

Apr 08, 2015 | Cars & Trucks

1 Answer

Engine knocking at startup


bad air/fuel mixture could cause rod knock like that, which is a for of backlash or whip like action. Detonation, like very poor grade of fuel. IF your engineis running really rich, the extra rich fuel goes by your piston rings and thins out your engine oil. If you have a bad ROD bearing, it is probably TOO LATE. CLEAN YOUR THROTTLE BODY and IAC valve, since these things fine tune your FUEL/AIR mixture and PREVENT rich running. GOOD LUCK!!

Dec 12, 2013 | GMC Yukon XL Cars & Trucks

1 Answer

P1133 on a 2002 saturn sc2 1.9L


Hi thee:
Check this possible causes:
- Air leaks present in the exhaust manifold or the exhaust pipes
- Fuel pressure is too high (i.e., causing a rich air fuel mixture)
- HO2S may be contaminated (due to improper fuel or silicone)
- HO2S signal high or low reference circuit has high resistance
- HO2S heater element has failed, or the heater circuit is open
- PCM has failed

Test wires and harnesses. Hope helps.

Sep 01, 2012 | Saturn Cars & Trucks

1 Answer

Vehicle unused with dead battery for 6 months will start but not maintain idle


The automatic idle speed control system has lost its adaptive idle learning due to the dead battery. To help to correct this in the short term run the engine at 2000 RPM until warm, then back down to 1500 RPM for 3 minutes, then 1000 RPM for 3 minutes, then let it idle for 5 minutes, this should get the system to a point in the idle learn that it doesn't stall out, then drive it for 20 miles under varied conditions of highway and stop and go and low speed operation, that should get all to work again. If you still have problems you will need to have the system scanned to see what is going on that is causing a stall. Also add fresh fuel, gas goes bad in about 3 months. Use the recommended grade of fuel.

Jan 20, 2012 | 2001 Mitsubishi Montero

1 Answer

89 Chevy Sprint takes about 5 minutes to warm up to be able to drive away or it stalls when I give it gas. The engine will rev up for 3-4 seconds then drop down and almost stall and then rev again during...


Plug the vacuum line you unplugged and the idle should come back. Change your air filter and the map sensor. check for correct coolant level and replace the coolant temp. sensor. This sensor affects cold starting and idle through the ECU (open loop mode, rich fuel mapping and 1200 rpm idle) It should go to closed loop mode in the ECU once engine warm up is achieved ( lean fuel mapping and normal 900 rpm idle). Do not unplug anything else till you perform an OBDII scan of the stored fault history

Jun 14, 2017 | Chevrolet Sprint Cars & Trucks

1 Answer

Truck stalls


if it is burning rich, there for it will be over fueling around low rpm i do belive, which will cause the engine to flood, im guessing after you have been low rpm then go for high rpms, it like hesitaes and takes abit of a cough then goes, if that is the case then it is overfueling.

there is a way to advance/****** the engine mixture, but id say for safe if you don't know what your doing to take it do a garage, and ask for it to be timed up with the timing strobe light :) which will stop the, over fuelling around low rpms.

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2 Answers

2001 Dodge 1500 4x4 fault code PO 108


look for vacuum leak at air filter to throttle body ..all along the snorkel use carb cleaner while running and waft areas described til motor changes personalitly

Jan 13, 2009 | 2001 Dodge Ram 1500 Truck 2WD

2 Answers

Engine runs terrible


Fuel line or fuel pressure regulator leaking, both are inside intake.

Dec 30, 2008 | 1994 Chevrolet S-10 Blazer

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