Fortuitously you have a BGB however. There are large sections dedicated to diagnostics and troubleshooting. That is the place I'd personally begin. It can guide you a lot better than almost any one can. To the abundant AFRs you will need to be on the lookout throughout the circuits of the O2 sensor, MAP sensor and coolant temp sensors.

Of course you have to operate the Map and Iat sensors in lieu of the afm. Fortuitously a map sensor from just about any corolla will work. 5sfe Celica map sensors do the job perfectly also. Almost any toyota IAT sensor performs fantastic.

The Silvertop is identical to all prior A-series engines manufactured right before it in that it utilizes a simple and trustworthy sprung idler wheel to help keep stress about the belt. The Blacktop’s make use of a hydraulic tensioner and it’s have special belt tension pulley to match.

On the 4AG This really is know as being the VVT "rattle of death". A dealership could present you a single maybe after a very long ready time period but the expense could be near to $five hundred or maybe more. ** Silvertop Pulley has been discontinued. **

To allow for the different cam belt tensioner (see “Camshafts belt tensioner”) the Blacktop cam belt is a single tooth shorter at one hundred ten as compared to the 111 of the Silvertop.

The interior changeover in the rear opening as seen with the rear flange casting from the throttle housing is different. The Silvertops have a straightforward round machined opening at the exact same 43mm diameter from the blade / throttle Heart bore whilst the Blacktop has far more of the kidney shape to match different manifold (see “Inlet manifold”).

I've new blacktop mounts from Toyota NZ amongst other things so it ought to get installed later from the week ideally. the wiring is one thing i set over the back burner however and now its time to finish... or perhaps megasquirt it if I get mad sufficient...

Will not know with reference to ITBs, the O2 sensor is simply seriously speculated to adjust the combination at cruise and the like. I am going to Have got a browse in the tech article I've over the inventory ecu and its features Once i get house and see what it suggests with regard to the amount adjustment the O2 sensor is capable of.

You will need to Check out the location of the TPS, as any time you change the placement from the throttlestop screw about the #1 ITB you will also alter the TPS placing. Good luck

It should not idle or scarcely idle with no air passing throughout the ISC. You either have an intake leak, the ITBs are horribly outside of adjustment or another thing is Completely wrong like the throttle or something else Keeping the plates open, or a little something like that.

Clarification: Within more info the U.S. marketplace, the 4A-GE engine was initial used in the 1985 product 12 months Corolla GT-S only, and that is determined as an "AE88" within the VIN but utilizes the AE86 chassis code around the firewall as the AE88 is usually a "sub" Variation on the AE86.

If the timing is simply too considerably Highly developed, the spark plug fires way right before TDC, as well as gasoline/air combine will achieve max stress whilst the piston is still pretty superior from the cylinder.

The VVT solenoid is located over the exhaust facet of The top with the front. It has a relentless beneficial on just one terminal and the opposite is grounded through the ECU to activate the oil movement. The VVT solenoids are identical concerning the black and silvertops While from the blacktop it employs many different inputs like engine load, temp ,etc.

here's some pictures of the harnesses. the one Using the blue tape may be the 4age 20V Black best harness. another harness is really a 7AFE manual harness. demonstrating a lot of the plug similarities.