Q: I have a 1.6fe Toyota Conquest which is consuming too much fuel and engen vibrates and black smoke high idle 1995 Toyota Conquest

asked by on March 13, 2017

I have a Toyota conquest 1.6 fe the engen run rough idling high too much fuel consumption an black smoke on the exhaust
My car has a manual transmission.

Car is getting worse gas mileage Inspection $94.99 - $114.99 Get a Quote

Hi there - first task is to get any problem code information available, whether the Check Engine light is illuminated or not. 1995 was an On-Board Diagnostics (OBD) year for many manufacturers, and your Conquest could have either OBD I or OBD II. If there is no OBD port under the dash, there should be a plastic box with "Diagnosis" stenciled on it under the hood on the left front wheel arch. Your rich mixture and rough running are possibly the result of a bad coolant temperature sensor (or wiring) reporting "cold" to the engine when, in fact, it isn’t. A bad oxygen sensor (pre-catalytic converter) or mass air flow sensor could also cause this problem. I recommend a high fuel consumption inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, and give you an accurate assessment of damage and cost estimate for repairs.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

How do I check the transmission fluid?
Your transmission needs fluid just like your engine needs oil and for the same reasons. It lubricates and reduces heat, while providing the pressure needed for the transmission to operate. Keeping an eye on your fluid level is important to...
How do I use the power outlets?
Your vehicle has a power outlet on the instrument panel, and, if equipped, in the center console. To use the power outlets, first remove their covers, then plug an electrical device in. The electrical device cannot exceed 12 volts and...
Random startup problems, AAA battery service
Hello. It sounds like the engine does not crank at all when this occurs. This is typically caused by a failing ignition switch (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-ignition-switch) or transmission position sensor (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-transmission-position-sensor-switch). The most common issue I have come across on this vehicle...
Problem with AC/heater - 2005 Ford Explorer
Hello. The problems you describe with the front system may either be a faulty control switch or faulty vacuum motors for the air blend doors. The problem in the rear is likely the rear heater control valve, which regulates the...
Checking new alternator.
You should have a mobile mechanic like one from YourMechanic come to you so you do not have to worry about getting stranded on the road with a dead system. Have the engine light on inspected. (https://www.yourmechanic.com/services/battery-light-is-on-inspection) by the mechanic...
I just replaced the battery in my car and as I was driving I stacted to lose power and the car died it cranks but won't start
The new battery that you bought should be fully re-charged. Confirm that the engine immobilizer system (security system) is not activated thus preventing the car from starting. Check for the characteristic, but momentary, whirring sound from the in-tank fuel pump...
whining noise in front end
The pulling on braking and the suspected problem with the bearing (i.e., the possible bearing noise) may be a coincidence, especially if you only repaired the brakes on one side of the vehicle. If pads and/or rotors on only one...
Is a 2008 bmw 528i with 80,000 miles still a good car to buy ?
Hello. This does appear to be a good deal for this car, but it needs to have a full inspection prior to being purchased. This car is nearing the time when it will usually get very expensive to maintain and...
Where is the fuel pump relay located bmw 328i xdrive 2009
The fuel pump relay is located in or on the engine cowl. It may be on the passenger side beneath the air intake. Orange is a common color used by BMW for the fuel pump relay housing. YourMechanic does offer...

Related articles

Top 10 PZEV Cars for Eco-Friendly Drivers
Teddy Leung / Shutterstock.com The whole idea of a PZEV (that is, a partial zero-emissions vehicle), seems paradoxical. You’d think it’d have to either be zero-emissions or not in the category at all. But as contradictory as...
A Buyer’s Guide to the 2012 Toyota Venza
The The 2012 Toyota Venza offers the best combination of the SUV and a sedan. It has ample headroom and legroom so passengers are comfortable for long rides, while offering a four-cylinder front-wheel drive version or V6 option all-wheel drive...
The Best Used Cars to Buy If You Live in a Hilly Area
Do Do you live in terrain that is hilly? Do your city streets feature plenty of inclines and declines that can be nothing short of treacherous in miserable weather? If so, when it’s time to purchase a car you’re looking...