bad tps June 04, 2015, 04:31:05 AM I'm pretty sure my tps is bad when I unplug it it idles down. It will idle fine sometimes then all of a sudden it will jump up to 2k. I can't find anyone who sells tps's for the 88 2.3t. Any suggestions would be much appreciated thanks. Quote Selected
bad tps Reply #1 – June 04, 2015, 08:27:54 AM The 2.3 TPS are adjustable, I assume you've tried to set it??Not 100 per on this but I believe the ones for '87 & '88 Mustang 2.3 are same... Some applications had small differences like length of lead that changes part number... Quote Selected
bad tps Reply #2 – June 04, 2015, 01:21:44 PM The only way to tell if a tps is bad is if it throws a code or if you check it with a volt meter.The tps is a pot based variable resistor. They generally last pretty good for a very long time. Think volume on a stereo. Quote Selected
bad tps Reply #3 – June 04, 2015, 03:34:50 PM napaonline.com shows one. Part # MPF31956 Quote Selected
bad tps Reply #4 – June 05, 2015, 01:48:21 AM No I didn't know they were adjustable.How do you set the tps? I was getting a code for the engine coolant temperature sensor. I replaced it and it's still Idiling high. Im still getting a cel not sure what it's throwing now will pull codes tomorrow. I bought one from eBay NOS. All the parts stores around here didn't have any. Quote Selected
bad tps Reply #5 – June 05, 2015, 03:06:46 AM where was I when asking lolMine is all jacked up and they don't make them I guess I'm sol on a new one Quote Selected
bad tps Reply #6 – June 05, 2015, 04:12:42 AM Codes should always be the first step, especially when you have a light on.The tps does not need to be set. Anything from roughly .59-1.27v's at idle is all the computer needs to see with at least 3.5v's above idle to initiate wot, with no dead spots inbetween.My 86 cougar sits at like 1.25v's and since replacing my fuel pump and distributor idles like a kitten again. Setting the idle too high or too low, or a vacuum leak will make the computer try to cut idle in weird ways like screwing with the timing. This is generally what causes an inconsistent or rolling idle problem. Quote Selected
bad tps Reply #7 – June 05, 2015, 11:43:55 AM Quote from: Haystack;448643Codes should always be the first step, especially when you have a light on.The tps does not need to be set. Anything from roughly .59-1.27v's at idle is all the computer needs to see with at least 3.5v's above idle to initiate wot, with no dead spots inbetween.My 86 cougar sits at like 1.25v's and since replacing my fuel pump and distributor idles like a kitten again. Setting the idle too high or too low, or a vacuum leak will make the computer try to cut idle in weird ways like screwing with the timing. This is generally what causes an inconsistent or rolling idle problem.Well it's my experience the 2.3 are more finicky than 5.0, verify less than one volt on TPS with throttle at rest, read between green & black wires(engine doesn't have to be running, just ign on)... Also as mentioned be sure there are no dead or spots voltage suddenly jumps...For codes if it has a 23 or 63, TPS or maybe wiring is probably the issue... Quote Selected
bad tps Reply #8 – June 06, 2015, 12:34:51 AM I pulled the codes it's throwing 23 and 63 I'm assuming 63 is from unplugging it while it's running. Quick question will the tps make it hesitate or stumble and fall on its face? At wot when it starts making boost it just starts studering. Quote Selected
bad tps Reply #9 – June 06, 2015, 12:00:20 PM Quote from: SR7188;448663I pulled the codes it's throwing 23 and 63 I'm assuming 63 is from unplugging it while it's running. Quick question will the tps make it hesitate or stumble and fall on its face? At wot when it starts making boost it just starts studering.Yeah you need to repl TPS, bogging, flat spots etc can all be caused by TPS(and won't always throw a code)...When the one on my '93 Lightning failed you'd have thought it had a 3.8 it with half the plug wires missing(that's just a guess I've never owned or even driven any ford that had a 3.... Quote Selected
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