I would like to clean my tps and mafs. where can i locate these. it is 98 early model

Tps is a possibility

The first thing you need done is a scan of the TCM for fault codes

clean MAF first.if no help then replace

PO 1121 ---Throttle Position Sensor Inconsistent
with MAF Sensor


PCM monitorsTPS to MAF readings

If readings are not consistant with calibrated load values
the test fails & a DTC is set on your dash (1121)

Air Leak between MAF & Throttle Body
Bad TPS
Bad MAF

With the MAF disconnected you have no way to
monitor the air intake or air temp.

I would suggest you let a repair shop diagnose your issues

this is an obd2 trouble code table, it can help you understand the meaning of code.
and the cause of p0171:

The MAF (Mass Air Flow) Sensor is dirty or faulty. Note: The use of "oiled" air filters may cause the MAF to become dirty if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry.
There could be a vacuum leak downstream of the MAF sensor.
the solution:
In the vast majority of cases, simply cleaning the MAF sensor does the trick. Consult your service manual for it's location if you need help. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling
Inspect all vacuum and PCV hoses, replace if necessary
Check for a dirty fuel filter and proper fuel pressure

the cause of p0121:

TPS has intermittent open or short internally
Harness is rubbing and causing an open or short in the wiring
Bad connection at the TPS
Bad PCM (less likely)
Water or corrosion in connector or sensor

solution:
1. If you have access to a scan tool, see what the idle and WOT (wide open throttle) readings are for the TPS. Check if they're close to the specifications mentioned above. If not, then replace the TPS and re-check.
2. Check for an intermittent open or short in the TPS signal. To do that, you can't use a scan tool. You'll need an oscilliscope. The reason is because scan tools take samplings of many different readings over just one or two data lines and can miss an intermittent drop out. Hook up your oscilliscope and watch the signal. It should sweep up and down smoothly with no drop outs or spikes.
3. If no problems were noticed, perform a wiggle test. Do this by wiggling the connector and harness while watching the pattern. Does it drop out? If so, replace TPS and re-check.
4. If you have no TPS signal, check for 5 Volt reference at the connector. If it's present, check the ground circuit for open or shorts.
5. Make sure the signal circuit isn't 12V. It should never have battery voltage. If it does, trace circuit for short to voltage and repair.
6. Look for any water in the connector and replace TPS as necessary.

is the check engine light on?

Do not physically touch the heated wires, they are ceramic coated and sensitive. Only spray tehm With carb cleaner or MAF sensor cleaner.

It sounds like you are running lean. IF your TPS is adjustable, it may need adjusting. TPS = throttel position sensor. Other than that, a bad intake air temperature sensor or bad upstream O2 sensor should turn on your check engine light.

Maybe, Ford motors are sensitive to airflow changes, a slow responding MAF can cause delayed signals to real world conditions. An UNDERreporting MAF will ENLEAN the fuel charge as delivered to the injectors. This can feel like or perceived to be a misfire/coil problem, BUT ONLY UNDER A LOAD. Check all PCM inputs, condition of components.What is more logical: EIGHT (8) coils OR EIGHT (8) injectors failing AT THE SAME TIME? I would look at a single component scenario insteadwise, fuel pump? ACT sensor? TPS? EGR solenoids? MAF?

A code P0121 may mean that one or more of the following has happened:

• TPS has intermittent open or short internally
• Harness is rubbing and causing an open or short in the wiring
• Bad connection at the TPS
• Bad PCM (less likely)
• Water or corrosion in connector or sensor

(TPS = throttle position sensor - mounted on side of throttle body and connected to accelerator linkage.)
Causes A code P0171 may mean that one or more of the following has happened:

• The MAF (Mass Air Flow) Sensor is dirty or faulty. Note: The use of "oiled" air filters may cause the MAF to become dirty if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry.
• There could be a vacuum leak downstream of the MAF sensor.

Possible Solutions Possible solutions include:

• In the vast majority of cases, simply cleaning the MAF sensor does the trick. Consult your service manual for it's location if you need help. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling
• Inspect all vacuum and PCV hoses, replace if necessary
• Check for a dirty fuel filter and proper fuel pressure

Hope this helps.

check automatic idle speed motor if equipped.

trottle sensor, temp sensor ,ecu...