SPONSORED LINKS

1991 Mercury Capri warm engine= no power

Tiny
ASSWRECKER
  • MEMBER
  • 1991 MERCURY CAPRI
Engine Performance problem
1991 Mercury Capri 4 cyl Front Wheel Drive Manual

car starts and idles fine but has no power when in gear and trying to drive in traffic very unsafe. Other words it will go like hell when cold but as soon as it warms up engine cuts out, very hesitant won't get up to speed at all. Totally powerless engine performance. Very undriveable. Need any and all possible remedys please.
SPONSORED LINKS
Thursday, January 28th, 2010 AT 4:13 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Inspect and test all the following listed below:

Oxygen sensor
Dirty fuel injectors (cleaning the injectors often fixes this).
Bad MAP (manifold absolute pressure) sensor
Bad TPS (throttle position) sensor
Bad or dirty MAF (mass airflow) sensor
Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
Bad gasoline (fuel contaminated with water or too much alcohol)

Sometimes, what feels like a hesitation is actually ignition misfire rather than lean misfire. The causes of ignition misfire may include:

Dirty or worn spark plugs
Bad plug wires
Weak ignition coil
Wet plug wires
Cap and rotor

Note: If it doesn't apply disregard.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
+1
Friday, January 29th, 2010 AT 5:25 AM

Please login or register to post a reply.

Related Engine Low Power Content

Fix an Engine with Low Power!
VIDEO
Fix an Engine with Low Power!
Instructional repair video
Symptoms of Low Engine Power
GUIDE
Symptoms of Low Engine Power
The power your car's engine is producing is important. When you step on the gas you need your car to accelerate, mainly to keep you out of trouble when getting onto the...
VIEW MORE

Sponsored links