It's a '90 Ranger S-Cab, 2.9 L with and A4LD trans, and sat for 2 years with a wasted trans. I swapped the trans out for a reman A4LD, and all is swell except for the speedo. In the dash it now reads dramatically faster than actual mph, and past 65 mph the needle buries itself past 85, and actual speed is close to 65. Needle movement is smooth. The original speedo drive had 17 teeth, and the replacement drive is the same. Cable and cable engagement seems to be fine. Tire size and rear end ratios are stock- no change out, and the speedo worked fine before the trans failure. Anyone have any ideas?
Part 2- my factory tach intermittantly will read approx 500-1000 rpm higher than normal (700 rpm at idle norm), showing 1200 at idle, then occasionally after returning to "idle", will function properly for awhile. My schematics do not show the factory tach. What circuit is the tach drive connected into, and do I possibly have a bad ground or dash buffer? I'm stumped!!
2007-01-29 03:28:51 · 3 answers · asked by Anonymous in Cars & Transportation ➔ Car Makes ➔ Ford
Had the same thing happen on an '88 Ranger with the same engine. Turned out to be the OSS...Output Speed Sensor switch on the transmission. 'Bout a $15, 5 minute fix.
2007-01-29 04:07:45 · answer #1 · answered by Anonymous · 0⤊ 1⤋
whenever you get an oillight you want to end good away! many times oil lighting fixtures are set to illuminate at very low pressures, so think ofyou've have been given already broken your engine, hear for knocking sound coming from the engine, in case you do hear a clean mechanical knocking i'm afraid think ofyou've have been given ruined your engine and a rebuild may be mandatory... so some distance as your moving situation is going it seams to be something incorrect extremely with 4th kit in line with threat a bad syncro or bearing. Drain the oil and notice in case you detect gold/brass coloured shaving in it, this means undesirable syncro and a rebuild must be nessesary... Sorry to deliver undesirable information, yet have a save seem it over in case you may
2016-11-28 02:54:39 · answer #2 · answered by ? 4 · 0⤊ 0⤋
As far as the speedo, a tranny place will have to install the propper reduction gear at the cable input to the tranny.
$60.00 +/-
Tach? Probably a loose ground, or power wire. (tough to diagnose.)
2007-01-29 03:41:09 · answer #3 · answered by Mr. KnowItAll 7 · 0⤊ 0⤋