Clean connector and inspect harness for shorts and opens. For both P0136 & P0141. Possible source Signal too high: short-circuit to supply voltage in the signal cable defective heated oxygen sensor (HO2S). Signal too low: short-circuit to ground in the signal cable defective heated oxygen sensor...

Get one of them digital kitchen probe thermometers. Stick the probe in the intake air stream after the MAF. That will give you something to compare the readings to.

Quick way to tell if the IAT is in the MAF. Disconnect the MAF see if the IAT reading changes. Yes the car will run with the MAF disconnected.

Do you have a pic I can go by so I make sure I'm unhooking the right part(s)? This is what Jimmy 57 is talking about. There is a mechanical thermostat in the Air intake hose that switches over to warm air pulled around the exhaust when it is cold. It might be stick on warmed air intake. https://www...

It looks like someone modified the original double DIN opening to accept a single DIN radio with a single DIN tray either above or below the radio. The 1991 came with single DIN or double DIN. The single DIN will be harder to find. He could get the mounting frame for a double DIN. Then install one ...

If you guys know where I can find that, then I could try to buy it and ship it to my country, with a double DIN radio. The early 740, 940 & 960 are getting scarce everywhere. If you can get a double DIN mount panel. There is still a good supply of SC-XXX Radios. Will need to figure out of radio...

I'm getting a P0171 code but my LTFT reads -25. I've pulled the spark plugs from the car to check and they were black and smelled like fuel. I'm just not sure how I get a lean code, but I'm running extremely rich. Leak in the exhaust system. 1. Air gets sucked into the exhaust. 2. O2 sensor detects...

Long soak with penetrating oil. Then drill with a Left hand drill bit say 8mm if it is 10mm. Might just spin out the nipple when the bit bites. Left hand cuts counterclockwise (loosen). If not your have clearance to get a tap started.

tmcmilli wrote: ↑08 Aug 2020, 21:32 Is it just me or do the places identified in one of the original pictures copied below, and edited for identification, show several wires, not less than 6, that have been cut?

This should be helpful. It is high resolution. Download it and send to your printer.

I’m inclined to believe it’s probably the fuel injector, as the car was tuned up 1 year ago, new ignition coil, cap, rotor, wires and plugs. No issues at all since. Lots of things can happen in a year. Misfire one cylinder only. Most common causes are: Defective or loose Spark Plug. Defective or lo...