rough starts

[Rigs]

Hello all. I have a 95 bronco and sometimes when I start it it just turns over and idles roughly and then catches and the idle is fine but the smell of gas is real strong. Just this morning, however, I just got out of wawa and started it and it did the same thing only this time the engine stalled and now it won't turn over at all. Again, I could smell gas big time. Would the tps have anything to do with this? I replaced the tps about a year and a half ago. When I did though, someone asked me if I had adjusted it at all. I didn't. Did I need to? I know there is this black **** on it which turns. I also replaced the idle control unit I think it's called. Anyway, I replaced these two items because the idle was real bad up and down and nearly stalling. Any thoughts?

 

[miesk5]

yo Rigs

Suggest you do the SELF TEST - COMPREHENSIVE & Connector Location pics, Bronco & Ford; "...The self-test plugs were mounted on the passenger side fender on 1985-86 EFI trucks; Self-Test Input (STI) is the Pin in the Lt gray Connector and Signal Return Ground (STO/SIGRET) is Pin E in black Connector in 87-95; The engine temperature must be greater than 50°F (10°C) to pass the KOEO Self-Test and greater than 180°F (82°C) to pass the KOER Self-Test. Run it around to heat the engine up and shift thru all gears incl Reverse. Then turn off all accesories/lights, etc. Make sure A/C is off and transmission is in Park (automatic) or in Neutral for a Manual & release clutch. Do Key On Engine Off (KOEO) portion first. Look Codes up in my broncolinks.com site using the new Search function. Source: by BroncoJoe19 (Joe) at Ford Bronco Zone Forums

Long, Boring, but often neglected version;

Engine ID codes are issued at the beginning of the KOER Test and are one-digit numbers represented by the number of pulses sent out.

During KOER; For gasoline engines, the engine ID code is equal to one-half the number of engine cylinders (i.e. 4 pulses = 8 cylinders).

These codes are used to verify the proper PCM is installed and that the Self-Test has been entered.

On vehicles equipped with Brake On/Off (BOO) input (such as E4OD), the brake pedal MUST be depressed and released AFTER the ID Code has been displayed. This tests the ability of the EEC system to detect a change of state in the Brake Lamp Switch.

On vehicles equipped with Transmission Control Switch (TCS) such as da E4OD, the switch must be cycled after the ID code has been displayed. This tests the ability of the EEC system to detect a change of state in the TCS. TCS = Transmission Control Indicator Light (TCIL) on E4OD it is also ref to as the OD on/off LED/Switch @ end of tranny gear stalk.

The Dynamic Response code is a single pulse that occurs 6-20 seconds after the engine identification code. When/if the Dynamic Response code occurs, perform a brief Wide-Open Throttle (WOT). The dynamic response check is used on some applications to verify operation of the TP, MAF, MAP & KS sensors.

On vehicles equipped with the Power Steering Pressure (PSP) switch, within 1 to 2 seconds after the ID code, the steering wheel must be turned at least one-half turn and released. The PSP Switch signals the EEC Module when power steering pressure exceeds 350 psi ±50. The engine then increases idle speed to compensate for the additional load. It appears the PSP switch was deleted from the 94 model year.

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[BroncoJoe19]

Miesk5 is right... pulling code would be helpful, and I'd like to encourage you to do that.

I think that this link is written a little more clearly on how to pull codes. I had to read three different ones until I really understood how to do it myself, but once you have done it once, it is much easier to do again.

http://broncozone.com/topic/14269-code-reader/page__p__74587&?do=findComment&comment=74587

To answer your initial question, I doubt that your issue is your TPS, nor how it is adjusted, (OR NOT).

Another thing that I would like to suggest is that you give your baby, a good look for a vacuum leak.

There are tips in the link above.