86 Ranger Fuel System Issues
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86 Ranger Fuel System Issues
Just bought this vehicle, engine would start, and run...then shut down. I replaced fuel pump in the tank, and new pressure regulator. Vehicle starts fine, runs great at idle, but when put in drive, she coughs, sputters while I'm stepping on the gas. Any thoughts would be appreciated. Vehicle is standard cab, 2.3L gas engine.
Postmaster
Joined: Oct 2003
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From: SoCal
When I had the same problem with my 87 it would clear up if
I stomped on it.
Took a couple of minutes to pull the codes and got a 53 "TPS signal voltage is too high."
Checked the voltage output of the TPS (throttle position sensor) & it was jumping all over the place. Replaced it and problem solved.
You need to take a few minutes to check for trouble codes & check fuel pressure. An 86 has 2 fuel pumps, the one you replaced & a frame mounted pump.
I stomped on it.
Took a couple of minutes to pull the codes and got a 53 "TPS signal voltage is too high."
Checked the voltage output of the TPS (throttle position sensor) & it was jumping all over the place. Replaced it and problem solved.
You need to take a few minutes to check for trouble codes & check fuel pressure. An 86 has 2 fuel pumps, the one you replaced & a frame mounted pump.
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Sounds like a good plan. However, I have no way of checking the voltage output and or the fuel pressure without the proper tools, just getting started in the fix-my-mobile business. Also, where would I find the TPS...?
Postmaster
Joined: Oct 2003
Posts: 4,516
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From: SoCal
The throttle cable connects to the throttle plate & the TPS monitors the position of the throttle plate. It sends 1 volt to the PCM/computer at idle up to 5 volts at full throttle
The last fuel pressure gauge that I bought was from Harbor Freight. You want the one for fuel injection. It was about 15 bucks. Look at the top of the engine for what looks like a tire pressure valve. Screw on the gauge to check fuel pressure.
The simplest way to pull trouble codes is with an Equus 3145 scanner. It reads/stores/displays the codes.
Check it out at amazon.com. About 25 bucks. Or google "pulling EEC-4 trouble codes with an analog VOM."
Good luck with the new business.
The last fuel pressure gauge that I bought was from Harbor Freight. You want the one for fuel injection. It was about 15 bucks. Look at the top of the engine for what looks like a tire pressure valve. Screw on the gauge to check fuel pressure.
The simplest way to pull trouble codes is with an Equus 3145 scanner. It reads/stores/displays the codes.
Check it out at amazon.com. About 25 bucks. Or google "pulling EEC-4 trouble codes with an analog VOM."
Good luck with the new business.
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