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Forum namePerformance/Engine
Topic subjectRunning Rich [Stock FPR + Walbro 190]
Topic URLhttps://forums.2gnt.com/dcboard.php?az=show_topic&forum=i5&topic_id=135982
135982, Running Rich [Stock FPR + Walbro 190]
Posted by PFC_CiarlilloM, Feb-07-12 03:28 AM
So, long story short is that my fuel pump went and I figured I'd get the Walbro 190 since I plan on doing a build here shortly. I have a 95 Talon ESi w/ basic bolt-ons, and everything else stock.

My problem is that it runs really REALLY rich. I'm sure you guys could have guessed. I did some reading and found somewhere that without rewiring, the 190 doesnt flow that much more than stock. Anyways, I need some opinions. I was thinking of getting an AFPR but I am unsure how much work it takes to install (only 21 still learning how to work on cars) or just run rich until I rebuild.

Thanks, Mike
135983, RE: Running Rich
Posted by Gruff511, Feb-07-12 03:52 AM
What's really rich? How are you monitoring AFR's? Do you have a wideband o2?
135984, RE: Running Rich
Posted by PFC_CiarlilloM, Feb-07-12 04:17 AM
I don't have a wideband but the smell of fuel is really great. It doesn't matter if its on the highway or city but If I drive it hard it really wreaks of fuel. Somehow it doesn't seem like gas mileage has been greatly affected. I'm still tracking/monitoring the miles and gauge. There shouldn't be a leak in the line because I had it replaced about a move ago but ill take a look and inspect it to make sure.
135985, RE: Running Rich
Posted by PFC_CiarlilloM, Feb-07-12 04:20 AM
*had all fuel lines from front all the way to back done about a *month* ago*
135988, RE: Running Rich
Posted by LE30vm, Feb-07-12 10:16 AM
Are you sure everything is hooked up properly? A double check for kinks and all connections may be your friend in this situation.
135992, RE: Running Rich
Posted by PFC_CiarlilloM, Feb-07-12 03:51 PM
Everything appears to be running normal upon checking it.

*On a side note my coolant gauge is on, The previous owner said she had a mechanic work on the head and replaced it with a Neon head. She said that its just a dummy gauge as he couldnt get it to come off. Not sure if thatll affect anything. I believe I read somewhere if the coolant sensor has gone bad itll flood with fuel when attempting to start.
135993, RE: Running Rich
Posted by Gruff511, Feb-07-12 04:07 PM
Try renting a wideband at the local autoparts store and see what readings you get. When i had my stock fpr it always smelt really rich when just idling i was at 14.7afr
135994, RE: Running Rich
Posted by PFC_CiarlilloM, Feb-07-12 04:32 PM
Funny that you suggested that, I was just about to head to Advance Auto right now. Im sure they'll have one to rent there. Ill get back with my readings as soon as I get a chance. It seems to idle fine. Atleast I dont really smell fuel then.
135995, RE: Running Rich
Posted by PFC_CiarlilloM, Feb-07-12 04:39 PM
Also, I got about 100 miles from a full tank down to the 3/4's mark. It was a mix of highway and city driving.
135996, RE: Running Rich
Posted by PFC_CiarlilloM, Feb-07-12 05:48 PM
Advance doesnt rent out widebands. The guy didnt even have any idea what I was talking about. Ill try a couple other part stores tomorrow.
135997, RE: Running Rich
Posted by jdm1990, Feb-07-12 07:13 PM
i highly doubt you'll find a part store that will rent out a wideband 02 sensor. But I know I'm running a Wally 190, and even before I switched to MS my car never ran rich. So I doubt it's the fuel pump causing you to run rich. Then again, I have a 95 so I don't know if my factory FPR is different.
136001, RE: Running Rich
Posted by PFC_CiarlilloM, Feb-07-12 07:59 PM
I too have a 95. It might be a coincidence that I have a faulty sensor/sensors. I'm showing 0 codes. I had a IAC code that showed then it went away and never came back.

136002, RE: Running Rich
Posted by LE30vm, Feb-07-12 09:37 PM
Just wondering, when you installed the new pump did you reset the ECU? AFAIK you will probably need to hook up a wideband 02 to get the most accurate reading of A/F or a flashy light gauge but those really arent worth it. (I have one that hasnt been installed yet, thanks to my cousin for my xmas last year as a gag gift.)

Edit: Also what color is your exhaust? Do you have a 5speed or auto? I believe our tank is 17 gallons which means a 1/4 tank is 4.25 your driving a 100 miles works out to about ~23 mpg seems semi-reasonable with some bolt ons depending what they are. I know headers caused mine to take a hit.
136004, RE: Running Rich
Posted by PFC_CiarlilloM, Feb-07-12 10:35 PM
I didn't reset the ECU. You do this by disconnecting the battery correct? If so, for how long? I've had to disconnect the battery a few times when installing the new ignition coil and spark plug wires. I have an auto tranny :( Basic bolt ins: CAI, 2.5'' catback, hi-flow cat, and aftermarket headers.
135998, RE: Running Rich
Posted by LE30vm, Feb-07-12 07:46 PM
Correct if the ECT is shot it might flood cylinders w/ fuel. However I am confused by what you are saying about your coolant gauge are you saying you have an aftermarket one?
135999, RE: Running Rich
Posted by PFC_CiarlilloM, Feb-07-12 07:51 PM
I meant to say I have a coolant light illuminating on my dash. I realized I worded that pretty off for what I meant.
136000, RE: Running Rich
Posted by LE30vm, Feb-07-12 07:56 PM
Have you checked what codes is the car throwing?
136003, RE: Running Rich
Posted by PFC_CiarlilloM, Feb-07-12 09:53 PM
Its throwing off zero codes as of yesterday. Ill check again when I get off work.

Also in the middle of doing my radiator flush tonight I noticed my vehicle idled like it normally does <1100rpm> but when I put it in reverse it dropped down to about 500 and sounded like it wanted to stall. It sputtered a bit but then went back up to 1100. Then when I put it in park it reved up to 2000rpm. Does this sound like any sensor would do this?
136005, RE: Running Rich
Posted by LE30vm, Feb-07-12 10:35 PM
You may need to burp your coolant.
136006, RE: Running Rich
Posted by PFC_CiarlilloM, Feb-07-12 11:52 PM
I was in the middle of doing that but I had to get ready for work... damn 3rd shift. Anyways ill finish that tomorrow. I didn't literally mean in the middle of the radiator flush but I'll burp it to make sure to make sure I'm full.