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1985 mustang 3.8 engine running way too rich

Changed injectors, fuel regulator, checked pressure and is ok. changed plugs and dist cap and rotor, checked and tested tps and map

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  • Cars & Trucks Master
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This an '85 Mustang with a 3.8 L v-6? Thought they only had the carbureted 4 cylinder , and a 302 v-8, possibly throttle body injected?

Check air delivery system, check timing, any trouble codes?

Posted on Dec 01, 2012

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6ya6ya
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Posted on Jan 02, 2017

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hawkwindbear
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SOURCE: 1987 chevy engine problem

you have to reset base idle see manual at library for procedure

Posted on Jul 19, 2009

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SOURCE: 1987 Chevrolet S-10 Pickup1987 chevy s10 2.5l tbi

Check the trottle body postioning sensor...

Posted on Jul 19, 2009

pippall
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SOURCE: 1987 chevy S10 engine idle problem

relace the throtle air idle valve.The temp switch will allso cause this problem.

Posted on Jul 19, 2009

motor1258
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SOURCE: 1993 ply 3.0 idles okay, engine bogs down when

Did you replace TP sensor, or just test it? How did you perform test on TP sensor ? (what method?)

Posted on Nov 01, 2009

Testimonial: "I checked voltage while opening throttle and it was with in the specs at both ends of idle and wide open. "

  • 1 Answer

SOURCE: 2000 kia sportage trouble code po171 once in

I have 2005 Kia Sportage with a check engine light. No other symptoms. I was told by Kia and Local mechanic that it is the fuel injectors. Error Code states that Fuel injectors are running lean. Put Master airflow- no change. Ran engine test with propane to run rich and trim never changed from 15. Car runs great. Kia dealer said that this is because we use Ethel in gas that it effects the alumium fuel rail delivery to the injectors and that it is necessary to change all of them .Kia Dealer wants $1,000.00 deposit to place order 6 fuel injectors from Kia. (Has anyone heard of that?)Also put fuel injector cleaner in tank.Does anyone have any suggestions before I spend over $1,000.00 to replace all 6 injectors or possible idea of what could be wrong?

Posted on Jan 07, 2010

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1985 s10 will not start. getting no fuel out of the injector. changed the fuel pump, tps and filters the injecter will fire when grounded, engine turns over good the ignition moduel was also changed the...


Odd one,sure the fuse labeled inj is ok? Also pull the dist. cap check for side to side play at the rotor shaft,if the bushing is worn out the pickup coil won't work right.While you're there,crank it and make sure the rotor is turning(ie timing chain of shaft gear failure)

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Hi, i have a 1993 ford f-150 4.9 the truck starts if runs very rich i have checked fuel pressure checked ok ive check spark getting a strong spark ive check for injector pulse and no problems the truck...


Hi,
I think you are on the right track. With the engine off remove the vacuum hose from the fuel pressure regulator and see if there is fuel in the vacuum hose or fuel is leaking from the fuel pressure regulator vacuum nipple,if so replace the regulator,check to make sure that the engine oil is not contaminated by fuel if so,change the oil and filter. Good Luck!

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I changed the plugs & cap, rotor, wires ,coil & fuel filter. the motor is still running rough.


If there's black smoke coming out of the tail pipe check M.A.P sensor for good vacum and coolant temp. sensor, both will work like a choke, if that check's out it 's going to be a bad fuel line leaking to the injector's or a fuel regulator, both sit under the in take, getting to much fuel will make it run like it need's a tune up.

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Firing order on a 1996 chevy 1500


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4.3 liter V-6 VIN "W" With Enhanced Ignition System
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1996 Chevrolet C 1500 P/U 2WD
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96 gmc sierra hard to crank after 12-14 hours


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1999 Ford Taurus mechanical problem


Hello,
your problem appears to be the idle control motor located on the air intake manifold it is a small motor that goes bad quite often. Other items that can cause this is a bad /clogged air filter or a tune up (spark plugs and wires), or clogged fuel injectors. to clean the injectors you can buy a container of fuel system cleaner and pour it into the gas tank and as you drive it cleans the system.

Once the fuel system is cleaned via a tankful of cleaner & gas then the idle controller motor would be next on the list to be replaced.

Good Luck !
Rich Lilja

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